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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 7732. Отображено 100.
10-05-2012 дата публикации

Cathode electrode for lithium-ion secondary battery and lithium-ion secondary battery using the same

Номер: US20120115024A1
Автор: Fenggang Zhao, Jiajai HU, Jianxun Xie, Leimin Xu, YING Wang, Yuansen XIE, Zhi Chen, Zilong YU
Принадлежит: Individual

A cathode electrode for lithium-ion secondary battery includes a current collector; and a cathode material layer comprising a bottom layer coated on the current collector and a top layer coated on the bottom layer. The lithium-ion transfer resistance of the active material particles in the bottom layer is smaller than that of the active material particles in the top layer, optimize the concentration polarization occurred in the cathode electrode during discharge, and enabling the lithium-ion secondary battery using the cathode electrode to be improved both in energy density and safety, and be further enhanced in specific capacity.

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Номер записи: 1
20-09-2012 дата публикации

Negative electrode plate for lead-acid battery and method for producing the same and lead-acid battery

Номер: US20120237829A1
Автор: Yoshiomi Fujiwara
Принадлежит: GS YUASA INTERNATIONAL LTD

A lead-acid battery includes a negative electrode plate containing carbon black, fibrous carbon and graphite in a negative active material thereof. The average primary particle size of the carbon black is 10 nm or more and 120 nm or less, and the content thereof is 0.05% by mass or more and 2.2% by mass or less based on the mass of negative active material. The average length of the fibrous carbon is 1 μm or more, and the content thereof is 0.02% by mass or more and 1.2% by mass or less based on the mass of negative active material. The average particle size of the graphite is 20 μm or more, and the content thereof is 0.02% by mass or more and 2.0% by mass or less based on the mass of negative active material.

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Номер записи: 2
09-05-2013 дата публикации

LITHIUM TITANATE CRYSTAL STRUCTURE, COMPOSITE OF LITHIUM TITANATE CRYSTAL STRUCTURE AND CARBON, METHOD OF PRODUCTION THEREOF, AND ELECTRODE AND ELECTROCHEMICAL ELEMENT EMPLOYING SAID COMPOSITE

Номер: US20130115516A1
Автор: Ishimoto Shuichi, Naoi Katsuhiko, Naoi Wako, Tamamitsu Kenji
Принадлежит:

Highly dispersed lithium titanate crystal structures having a thickness of few atomic layers level and the two-dimensional surface in a plate form are supported on carbon nanofiber (CNF). The lithium titanate crystal structure precursors and CNF that supports these are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The mass ratio between the lithium titanate crystal structure and carbon nanofiber is preferably between 75:25 and 85:15. The carbon nanofiber preferably has an external diameter of 10-30 nm and an external specific surface area of 150-350 cm/g. This composite is mixed with a binder and then molded to obtain an electrode, and this electrode is employed for an electrochemical element. 1. A lithium titanate crystal structure having a thickness of 1 nm or less at 2-5 atomic layers level and having one side of the two-dimensional surface spread in a plate form at 5-100 nm.2. The lithium titanate crystal structure according to claim 1 , wherein the two-dimensional surface is a (111) face.3. The lithium titanate crystal structure according to claim 1 , wherein the ratio between the thickness and one side of the two-dimensional surface is between 1:5 and 1:350.4. The lithium titanate crystal structure according to claim 1 , having a plate crystal structure with a thickness of few atomic layers level obtained by applying sheer stress and centrifugal force are to a solution comprising a titanium source and a lithium source to allow reaction and producing a lithium titanate crystal structure precursor claim 1 , and heating this precursor.5. A composite of lithium titanate crystal structure and carbon claim 1 , in which the dispersed lithium titanate crystal structure according to is supported on carbon nanofiber.6. The composite of lithium titanate crystal structure and carbon according to claim 5 , wherein the mass ratio between the lithium titanate crystal structure and carbon nanofiber ...

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Номер записи: 3
16-05-2013 дата публикации

MULTILAYER MATERIAL BASED ON ACTIVE LITHIUM, METHOD OF PREPARATION AND APPLICATIONS IN ELECTROCHEMICAL GENERATORS

Номер: US20130122365A1
Автор: Dontigny Martin, GAUTHIER Michel, PETITCLERC MICHEL, Zaghib Karim
Принадлежит: HYDRO-QUEBEC

A method for preparing a multilayer material based on active lithium, by depositing a film of active lithium on a protective layer at a sufficient speed so that substantially no oxidation of the lithium occurs, and/or during a sufficient time for the adhesion of the lithium to develop after contact with the protective layer. The multilayer material, when incorporated in an electrochemical battery as an anode, has excellent impedance stability and no formation of dendrites during the cycling. Batteries where the anode is the multilayer material are particularly efficient in terms of their coulomb efficiency. 1. A method for preparing a multilayer material which comprises at least one layer of active lithium , said method comprising a step of depositing a film of active lithium on a protective layer at a sufficient speed so that substantially no oxidation of the lithium occurs , and/or during a sufficient time for the adhesion of the lithium to develop after contact with the protective layer.2. The method as claimed in claim 1 , wherein the layer of active lithium consists essentially of lithium which has a degree of purity higher than 99% claim 1 , or of a lithium alloy comprising less than 3000 ppm of impurities.3. The method as claimed in claim 1 , wherein the layer of active lithium carries on one or each of its surfaces claim 1 , a passivation layer which is such that the ratio “thickness of the passivation layer”/“thickness of the layer of active lithium” is between 2.10and 1.10.4. The method as claimed in claim 1 , wherein the passivation layer comprises at least one lithium compound from the group consisting of LiO claim 1 , LiCO claim 1 , LiOH claim 1 , and LiSO; wherein the LiO claim 1 , LiCOand LiOH are formed in a dry atmosphere.5. The method as claimed in claim 1 , wherein a protective layer is deposited on each of the surfaces of the film of active lithium claim 1 , the two protective layers consisting essentially of an ion-conducting material.6. The ...

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Номер записи: 4
30-05-2013 дата публикации

COMPOSITE NITRIDE, METHOD OF PREPARING THE SAME, ELECTRODE ACTIVE MATERIAL INCLUDING THE COMPOSITE NITRIDE, ELECTRODE INCLUDING THE ELECTRODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE ELECTRODE

Номер: US20130136984A1
Автор: CHOI Won-chang, Choi Young-min, KIM Gue-sung, KIM Ryoung-hee, KIM So-yeon, Song Min-sang
Принадлежит: Samsung SDI Co., Ltd.

A composite nitride, a method of preparing the composite nitride, an electrode active material including the composite nitride, an electrode including the electrode active material, and a lithium secondary battery including the electrode, the composite nitride including a core material including a bronze-phase titanium oxide; and a nitrogen atom doped on at least part of the core material. 1. A composite nitride , comprising:a core material including a bronze-phase titanium oxide; anda nitrogen atom doped on at least part of the core material.2. The composite nitride as claimed in claim 1 , wherein the composite nitride is a compound represented by Formula 1 claim 1 , below:{'br': None, 'sub': x', 'y', 'z, 'TiONH\u2003\u2003[Formula 1]'}wherein, in Formula, 1.0≦x≦2.0, 0≦y≦1.0, and 0≦z≦1.0.3. The composite nitride of claim 1 , wherein the bronze-phase titanium oxide is a compound represented by Formula 2 below:{'br': None, 'sub': 1+x', '2+y, 'TiO\u2003\u2003[Formula 2]'}wherein, in Formula 2, −0.2≦x≦0.2 and −0.2≦y≦0.2.4. The composite nitride as claimed in claim 1 , wherein:the core material further includes a lithium titanium oxide, andthe core material is a composite material of the bronze-phase titanium oxide and the lithium titanium oxide.5. The composite nitride as claimed in claim 4 , wherein the composite nitride is a compound represented by Formula 3 below:{'br': None, 'sub': x', 'y', 'z', 'u, 'LiTiONH\u2003\u2003[Formula 3]'}wherein, in Formula 3, 0≦x≦2.0, 1.0≦y≦2.5, 0≦z≦1.0, and 0≦u≦1.0.6. The composite nitride as claimed in claim 4 , wherein the lithium titanium oxide is a compound represented by Formula 4 below:{'br': None, 'sub': 4+a', '5−b', 'c', '12−d, 'LiTiMO\u2003\u2003[Formula 4]'}wherein, in Formula 4, −0.2≦a≦0.2, −0.3≦b≦0.3, 0≦c≦0.3, and −0.3≦d≦0.3; andM is at least one selected from among metals of Groups 1-6, Group 8, and Groups 12-15 of the periodic table of elements.7. The composite nitride as claimed in claim 6 , wherein M in Formula 4 is at ...

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Номер записи: 5
06-06-2013 дата публикации

SUBSTITUTED LITHIUM-MANGANESE METAL PHOSPHATE

Номер: US20130140496A1
Автор: Nuspl Gerhard, Tran Nicolas
Принадлежит: SUED-CHEMIE IP GMBH & CO. KG

A substituted lithium-manganese metal phosphate of formula 1. A substituted lithium-manganese metal phosphate of formula{'br': None, 'sub': x', '1-x-y', 'y', '4, 'LiFeMnMPO'}in which M is a bivalent metal selected from the group consisting of Sn, Pb, Zn, Mg, Ca, Sr, Ba, Co, Ti and Cd and wherein: x<1, y<0.3 and x+y<1.2. Lithium-manganese metal phosphate according to claim 1 , in which M is Zn or Ca.3. Lithium-manganese metal phosphate according to claim 1 , in which 0 Подробнее

Номер записи: 6
06-06-2013 дата публикации

BRANCHED NANOSTRUCTURES FOR BATTERY ELECTRODES

Номер: US20130143124A1
Автор: LEE Jae Ho, LUND Isaac
Принадлежит: THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK

The invention relates to electrochemical electrodes containing branched nanostructures having increased surface area and flexibility. These branched nanostructures allow for higher anode density, resulting in the creation of smaller, longer-lasting, more efficient batteries which require less area for the same charging capacity. Also disclosed are methods for creating said branched nanostructures and electrodes. 1. A method of forming a branched metal silicide nanostructure , comprising: i. Providing a substrate;', 'ii. Disposing a non-refractory transition metal on said substrate; and', 'iii. Exposing said non-refractory transition metal to silane gas wherein at least some of the gas reacts with at least some of the non-refractory transition metal to form a solid primary structure; and, 'a. Forming a trunk by i. Disposing non-refractory transition metal on the outer surface of said solid primary structure; and', 'ii. Exposing said non-refractory transition metal to silane gas wherein at least some of the gas reacts with at least some of the non-refractory transition metal to form solid secondary structures, wherein said secondary structures are attached to said primary structure., 'b. Forming branches by2. A method of forming a branched nickel silicide nanostructure according to claim 1 , comprising: i. Providing a substrate;', 'ii. Disposing nickel on said substrate; and', 'iii. Exposing said nickel to silane gas wherein at least some of the gas reacts with at least some of the nickel to form a solid primary structure; and, 'a. Forming a trunk by i. Disposing nickel on the outer surface of said solid primary structure; and', 'ii. Exposing said nickel to silane gas wherein at least some of the gas reacts with at least some of the nickel to form solid secondary structures, wherein said secondary structures are attached to said primary structure., 'b. Forming branches by3. A method according to claim 1 , wherein said method additionally comprises repeating claim 1 , ...

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Номер записи: 7
20-06-2013 дата публикации

ELECTRICALLY CONDUCTIVE LAYER COATED ALUMINUM MATERIAL AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130157131A1
Автор: Ashitaka Zenya, Inoue Hidetoshi, Nakayama Kunihiko
Принадлежит: TOYO ALUMINIUM KABUSHIKI KAISHA

Provided are an electrically conductive layer coated aluminum material having properties which can withstand long term use; and a method for manufacturing the electrically conductive layer coated aluminum material. The electrically conductive layer coated aluminum material includes: an aluminum material (); a first electrically conductive layer (); an interposing layer (); and a second electrically conductive layer (). The first electrically conductive layer () is formed on a surface of the aluminum material () and includes an organic substance having electrical conductivity. The interposing layer () is formed between the aluminum material () and the first electrically conductive layer () and includes a carbide of aluminum. The second electrically conductive layer () is formed on a surface of the first electrically conductive layer () and includes carbon-containing particles (). A resin is attached onto the surface of the aluminum material () and is dried, a carbon-containing substance is attached thereonto, and thereafter, the aluminum material () is placed in a space including a hydrocarbon-containing substance and is heated, thereby forming the first electrically conductive layer (), the interposing layer (), and the second electrically conductive layer (). 1. An electrically conductive layer coated aluminum material comprising:{'b': '1', 'an aluminum material ();'}{'b': 2', '1, 'a first electrically conductive layer () being formed on a surface of the aluminum material () and including an organic substance having electrical conductivity;'}{'b': 3', '1', '2, 'an interposing layer () being formed between the aluminum material () and the first electrically conductive layer () and including a carbide of aluminum; and'}{'b': 4', '2, 'a second electrically conductive layer () being formed on a surface of the first electrically conductive layer () and including carbon.'}231. The electrically conductive layer coated aluminum material according to claim 1 , wherein the ...

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Номер записи: 8
20-06-2013 дата публикации

LITHIUM SALT-GRAPHENE-CONTAINING COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20130157135A1
Автор: Pan Jun, Wang Yaobing, Zhou Mingjie
Принадлежит:

A lithium salt-graphene-containing composite material and its preparation method are provided. The composite material has the microstructure which comprises carbon nanoparticles, lithium salt nanocrystals and graphene, wherein the surface of lithium salt nanocrystals is coated with carbon nanoparticles and graphene. The preparation method comprises concentrating and drying a mixed solution, then calcinating the solid. The lithium salt-graphene-containing composite material has excellent electric performance and stability since the problem of low electric performance resulted from carbon coating on the surface of lithium salt or coating imperfection resulted from graphene coating on the surface of lithium salt is effectively solved. For the more uniform and compacted combination between graphene and lithium salt nanocrystals, the graphene will not fall off and the composite material has a high capacity ratio, energy density and conductivity. Furthermore, particle agglomeration and growing up are reduced in the process of calcination. 1. A lithium salt-graphene-containing composite material , wherein said composite material has particulate structure comprising carbon nanoparticles , lithium salt nanocrystals and graphene; in said particulate structure , said carbon nanoparticles and graphene are coated on the surface of said lithium salt nanocrystals.2. The lithium salt-graphene-containing composite material according to claim 1 , wherein in said particulate structure claim 1 , the surface of said lithium salt nanocrystals is coated with said carbon nanoparticles claim 1 , the surface of carbon nanoparticles is coated with said graphene; or claim 1 , the surface of said lithium salt nanocrystals is coated with said graphene claim 1 , the surface of graphene is coated with said carbon nanoparticles; or claim 1 , said carbon nanoparticles and graphene dope with each other to form a mixed layer claim 1 , the salt on the surface of said lithium salt nanocrystals is coated ...

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Номер записи: 9
20-06-2013 дата публикации

ANODE ACTIVE MATERIAL, NON-AQUEOUS LITHIUM SECONDARY BATTERY INCLUDING THE SAME, AND MANUFACTURING METHOD THEREOF

Номер: US20130157139A1
Автор: Jo Yong Nam, KIM Young Jun, Park Min Sik
Принадлежит: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

The disclosure relates to an anode active material, a non-aqueous lithium secondary battery, and a manufacturing method thereof. The anode active material of this disclosure comprises a carbon-based material, and a coating film formed on the surface of the carbon-based material by performing heat treatment using an ammonia-based compound. The coating film may be formed on the surface of the carbon-based material through a thermal decomposition method using 10% or less by weight of the ammonia-based compound with respect to the carbon-based material. Since the surface of the carbon-based material is thermally treated using the ammonia-based compound, side reaction of the carbon-based material with an electrolyte at the surface thereof can be suppressed and structural stability can be enhanced, thereby improving battery lifespan and high-rate capability of a non-aqueous lithium secondary battery. 1. An anode active material for use in a non-aqueous lithium secondary battery , comprising:a carbon-based material; anda coating film formed on the surface of the carbon-based material through heat treatment using an ammonia-based compound,{'sub': '4', 'wherein the ammonia-based compound is expressed by a chemical formula of (NH)xMyNz where M is B, P, Al, N, S, Mo, Mn, Pt or Cr, N is F, O, Cl or I, 1≦x≦3, 0≦y≦2 and 1≦z≦8 (x, y and z being integers).'}2. The anode active material of claim 1 , wherein the coating film is formed through the heat treatment of a thermal decomposition method using 10% or less by weight of the ammonia-based compound with respect to the carbon-based material.3. The anode active material of claim 2 , wherein the coating film is uniformly formed or partially formed on the surface of the carbon-based material.4. The anode active material of claim 1 , wherein the ammonia-based compound is NHF claim 1 , NHBF claim 1 , NHPF claim 1 , NHAlF claim 1 , NHNO claim 1 , NHNO claim 1 , NHClO claim 1 , NHClO claim 1 , (NH)SO claim 1 , (NH)SO claim 1 , (NH)CO ...

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Номер записи: 10
04-07-2013 дата публикации

PRODUCING METHOD OF COMPOSITE ACTIVE MATERIAL, COATING APPARATUS, COMPOSITE ACTIVE MATERIAL AND ALL SOLID STATE BATTERY

Номер: US20130171526A1
Автор: Miki Nariaki, Uchiyama Takayuki
Принадлежит:

A method of producing a composite active material having an active material and a coat layer containing an ion conductive oxide and formed on a surface of the active material, including: applied film forming step of forming an applied film by applying a coating liquid for coat layer, containing an alkoxide compound as a raw material of the ion conductive oxide, on a surface of the active material under an atmosphere of lower dew-point temperature than dew-point temperature where the active material deteriorates; hydrolysis promoting step of promoting hydrolysis of the alkoxide compound by exposing the applied film under an atmosphere of higher dew-point temperature than dew-point temperature in the applied film forming step; and heat-treating step of forming the coat layer by heat-treating the applied film after the hydrolysis promoting step. 1. A producing method of a composite active material having an active material and a coat layer containing an ion conductive oxide and formed on a surface of the active material , comprising:applied film forming step of forming an applied film by applying a coating liquid for coat layer, containing an alkoxide compound as a raw material of the ion conductive oxide, on a surface of the active material under an atmosphere of lower dew-point temperature than dew-point temperature where the active material deteriorates;hydrolysis promoting step of promoting hydrolysis of the alkoxide compound by exposing the applied film under an atmosphere of higher dew-point temperature than dew-point temperature in the applied film forming step; andheat-treating step of forming the coat layer by heat-treating the applied film after the hydrolysis promoting step.2. The producing method of a composite active material according to claim 1 , wherein the dew-point temperature in the applied film forming step is −30° C. or less.3. The producing method of a composite active material according to claim 1 , wherein the dew-point temperature in the ...

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Номер записи: 11
11-07-2013 дата публикации

NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND RECHARGEABLE VACUUM CLEANER

Номер: US20130174370A1
Автор: FUJITA Yumi, INAGAKI Hiroki, Matsuno Shinsuke, MORISHIMA Hideaki, SARUWATARI Hidesato, Takami Norio
Принадлежит: KABUSHIKI KAISHA TOSHIBA

A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode comprises a current collector made of aluminum or an aluminum alloy and an active material layer laminated on the current collector. The active material layer contains first active material particles having an average particle diameter of 1 μm or less and a lithium diffusion coefficient of 1×10cm/sec or less at 20° C., and second active material particles having an average particle diameter of 2 to 50 μm. A true density of the second active material particles is larger by 0.01 to 2.5 g/cmthan a true density of the first active material particles. 1. A nonaqueous electrolyte battery comprising:a positive electrode;a negative electrode; anda nonaqueous electrolyte,wherein at least one of the positive electrode and the negative electrode comprises:a current collector made of aluminum or an aluminum alloy; andan active material layer which is laminated on the current collector, the active material layer containing{'sup': −9', '2, 'first active material particles having an average particle diameter of 1 μm or less and a lithium diffusion coefficient of 1×10cm/sec or less at 20° C. and'}second active material particles having an average particle diameter of 2 to 50 μm,{'sup': '3', 'a true density of the second active material particles is larger by 0.01 to 2.5 g/cmthan a true density of the first active material particles.'}2. The nonaqueous electrolyte battery according to claim 1 , wherein each of the positive electrode and the negative electrode comprises the current collector and the active material layer.3. The nonaqueous electrolyte battery according to claim 1 , wherein a difference between the true density of the first active material particles and the true density of the second active material particles is in the range of 0.02 to 2 g/cm.4. The nonaqueous electrolyte battery according ...

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Номер записи: 12
18-07-2013 дата публикации

COMPOSITIONS, LAYERINGS, ELECTRODES AND METHODS FOR MAKING

Номер: US20130183548A1
Автор: KOURTAKIS Kostantinos, Wise Brent
Принадлежит: E I DU PONT DE NEMOURS AND COMPANY

There is a carbon-sulfur composite; and there is a composition comprising about 1 to 17.5 wt. % polymeric binder and about 50 to 99 wt. % carbon-sulfur composite comprising carbon powder having a surface area of about 50 to 4,000 square meters per gram and a pore volume of about 0.5 to 6 cubic centimeters per gram. The carbon powder comprises carbon having a macromolecular structure ordered in at least two dimensions and characterized by having two-dimensional carbon sheets which are stacked into carbon layers. The carbon-sulfur composite also comprises about 5 to 95 wt. % sulfur compound. There is also a layering comprising a plurality of coatings. Respective coatings in the plurality of coatings can comprise respective compositions. The respective coatings can comprise at least one polymeric binder and at least one carbon-sulfur composite comprising carbon powder and sulfur compound. There are also electrodes comprising a composition or a layering and methods of using such in cells. 1. A composition comprising:about 1 to 17.5 wt. % polymeric binder; and [ 'wherein the carbon powder comprises carbon having a macromolecular structure ordered in at least two dimensions and characterized by having two-dimensional carbon sheets which are stacked into carbon layers, and', 'carbon powder characterized by having a surface area of about 50 to 4,000 square meters per gram and a pore volume of about 0.5 to 6 cubic centimeters per gram,'}, 'about 5 to 95 wt. % sulfur compound in the carbon-sulfur composite., 'about 50 to 99 wt. % carbon-sulfur composite, the carbon-sulfur composite comprising'}2. The composition of claim 1 , wherein the macromolecular structure is ordered in two dimensions or wherein the macromolecular structure is ordered in three dimensions and the carbon layers are associated with a stacking sequence of the two dimensional carbon sheets.3. The composition of claim 1 , wherein the carbon sheets are associated with basal planes that have slipped out of ...

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Номер записи: 13
25-07-2013 дата публикации

Batteries Having Nanostructured Composite Cathode

Номер: US20130189565A1
Автор: Lashmore David S., Schauer Mark W.
Принадлежит: Nanocomp Technologies, Inc.

A battery having a negative electrode including an anode current collector having at least one sheet of carbon nanotubes and semiconductor material deposited on the sheet; a positive electrode including a cathode current collector having at least one sheet of carbon nanotubes having a nickel sulfide or tin sulfide deposited on the sheet; and a separator situated between the negative electrode and positive electrode is provided. Methods for forming a cathode having nickel sulfide or tin sulfide deposited on a carbon nanotube sheet are also provided. 1. A battery comprising:a negative electrode including an anode current collector having at least one sheet of carbon nanotubes and semiconductor material deposited on the sheet;a positive electrode including a cathode current collector having at least one sheet of carbon nanotubes having a nickel sulfide or a tin sulfide deposited on the sheet; anda separator, situated between the negative electrode and positive electrode.2. A battery of claim 1 , wherein the sheets are made from single wall carbon nanotubes.3. A battery of claim 1 , wherein the sheets are made from multi-wall carbon nanotubes.4. A battery of claim 1 , wherein the semiconductor material includes silicon or germanium.5. A battery of claim 1 , wherein the semiconductor material includes particles that are welded on the carbon nanotubes.6. A battery of claim 1 , further including a casing made from carbon nanotube composite material.7. A battery of claim 6 , wherein the composite material includes polyamide claim 6 , polyphenylene sulfide claim 6 , polyether ether ketone claim 6 , polypropylene claim 6 , bispolyamide claim 6 , bismaleimide claim 6 , epoxies and combination thereof.8. A battery of claim 1 , wherein the separator is a porous polyethylene membrane claim 1 , or polyethylene membrane claim 1 , or a combination thereof.9. A battery of claim 1 , wherein the sheets of carbon nanotubes has density of about 80 g/m.10. A battery of claim 1 , wherein ...

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Номер записи: 14
01-08-2013 дата публикации

HYDROPHOBIC CATALYST LAYER FOR POLYMER ELECTROLYTE FUEL CELL AND METHOD OF PRODUCING THE SAME, AND POLYMER ELECTROLYTE FUEL CELL AND METHOD OF PRODUCING THE SAME

Номер: US20130196846A1
Автор: Miyazaki Kazuya, Yamada Kazuhiro
Принадлежит: CANON KABUSHIKI KAISHA

Provided is a hydrophobic catalyst layer for a polymer electrolyte fuel cell to which hydrophobicity is imparted so that the dissipation property of produced water is improved and which simultaneously has an increased effective surface area and an increased utilization ratio of a catalyst, and a method of producing the same. The catalyst layer for a polymer electrolyte fuel cell includes a catalyst obtained by reducing a platinum oxide, a hydrophobic agent, and a proton conductive electrolyte, wherein the hydrophobic agent is mainly composed of alkylsiloxane. An Si compound containing a hydrophobic substituent is brought into contact with a platinum oxide to subject the Si compound to hydrolysis and a polymerization reaction by the catalytic action of the platinum oxide, and then it is reduced, thereby obtaining a hydrophobic catalyst layer carrying an alkylsiloxane polymer. 1. A method of producing a hydrophobic catalyst layer for a polymer electrolyte fuel cell , comprising the steps of:bringing an Si compound containing a hydrophobic substituent, which causes a hydrolytic reaction owing to a catalytic action of a platinum oxide to form a polymerizable group, into contact with the platinum oxide;subjecting the Si compound to a polymerization reaction in a vicinity of the platinum oxide to form a hydrophobic agent on a surface of the platinum oxide; andthen reducing the platinum oxide.2. A method of producing a hydrophobic catalyst layer for a polymer electrolyte fuel cell according to claim 1 , wherein the Si compound containing the hydrophobic substituent comprises at least one or more compounds selected from the group consisting of 2 claim 1 ,4 claim 1 ,6 claim 1 ,8-tetraalkylcyclotetrasiloxane claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3 claim 1 ,3-hexaalkyl-disilazane claim 1 , monoalkylsilane claim 1 , dialkylsilane claim 1 , and trialkylsilane claim 1 , or a mixture thereof.3. A method of producing a polymer electrolyte fuel cell claim 1 , ...

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Номер записи: 15
22-08-2013 дата публикации

ELECTRODE ACTIVE MATERIAL LAYER, ELECTRODE BODY, LITHIUM-ION SECONDARY BATTERY, AND METHOD OF PRODUCING ELECTRODE ACTIVE MATERIAL LAYER

Номер: US20130216905A1
Автор: ICHIKAWA Sukenori
Принадлежит: SEIKO EPSON CORPORATION

An electrode active material layer for a lithium-ion secondary battery is formed from an electrode active material of layered crystal. The electrode active material having layered crystal is oriented in a layer direction of the electrode active material layer, and a plurality of through holes are formed from the surface of the electrode active material layer. The diameter of the through holes is preferably 10 μm to 5000 μm inclusive. 1. An electrode active material layer for a lithium-ion secondary battery , the electrode active material layer comprising:an electrode active material having a crystalline orientation; anda plurality of hole portions formed from a surface thereof.2. The electrode active material layer according to claim 1 , wherein the electrode active material includes layered crystal.3. The electrode active material layer according to claim 1 , wherein the plurality of hole portions are a plurality of through holes.4. The electrode active material layer according to claim 1 , wherein each of the plurality of hole portions has a diameter from 10 μm to 5000 μm inclusive.5. The electrode active material layer according to claim 1 , wherein a proportion of area occupied by the plurality of hole portions to area of a surface of the electrode active material layer claim 1 , when seen in a direction normal to the electrode active material layer claim 1 , is 0.004% to 70% inclusive.6. The electrode active material layer according to claim 1 , wherein the electrode active material layer has a thickness from 0.1 μm to 500 μm inclusive.7. The electrode active material layer according to claim 1 , wherein an inner wall of each of the plurality of hole portions is performed ion etching treatment.8. An electrode body comprising the electrode active material layer according to and a collector electrode.9. A lithium-ion secondary battery comprising the electrode body according to as one of a cathode and an anode.10. A method of producing an electrode active material ...

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Номер записи: 16
29-08-2013 дата публикации

HIGH-CAPACITY CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Номер: US20130224585A1
Автор: CHUNG Geun Chang, Kim Su Hwan, OH Song Taek, Park Jung Hwan
Принадлежит: LG CHEM, LTD.

Provided is a cathode active material including lithium manganese-based oxide, wherein the lithium manganese-based oxide has a layered crystal structure, has a content of manganese (Mn) greater than contents of other transition metal(s), includes 1 mole or more of lithium (Li) with respect to 1 mole of lithium transition metal oxide, has a plateau potential range in which lithium deintercalation as well as oxygen release occurs during initial charging in a high voltage range of 4.4 V or more, has domains included in the layered crystal structure exhibiting electrochemical activity due to a structural change in a potential range of 3.5 V or less after the initial charging, and includes conductive materials for improving electrical conductivity of the lithium manganese-based oxide in a potential range of 3.5 V or less after the initial charging. 1. A cathode active material comprising a layer-structured lithium manganese-based oxide ,wherein the layer-structured lithium manganese-based oxide has a content of manganese (Mn) greater than contents of other transition metal(s), includes 1 mole or more of lithium (Li) with respect to 1 mole of lithium transition metal oxide, has a plateau potential range in which lithium deintercalation as well as oxygen release occurs during initial charging in a high voltage range of 4.4 V or more, and includes different kinds of carbon-based conductive materials for improving electrical conductivity of the lithium manganese-based oxide in a potential range of 3.5 V or less after the initial charging.2. The cathode active material of claim 1 , wherein the cathode active material exhibits electrochemical activity due to a structural change to a spinel-like structure after the initial or several times of charging at a voltage of 4.4 V or more.3. The cathode active material of claim 1 , wherein the layer-structured lithium manganese-based oxide has a composition of the following Chemical Formula 1:{'br': None, 'sub': a', 'x', '1−a-x', '2, ' ...

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Номер записи: 17
29-08-2013 дата публикации

Core-Shell Composites for Sulfur-Based Cathodes in Metal-Ion Batteries

Номер: US20130224594A1
Автор: Berdichevsky Eugene Michael, Jacobs Alexander Thomas, Luzinov Igor, Svoboda Vojtech, Yushin Gleb Nikolayevich, Zdyrko Bogdan
Принадлежит: Sila Nanotechnologies Inc.

A battery cathode electrode composition is provided comprising core-shell composites. Each of the composites may comprise a sulfur-based core and a multi-functional shell. The sulfur-based core is provided to electrochemically react with metal ions during battery operation to store the metal ions in the form of a corresponding metal-sulfide during discharging or charging of the battery and to release the metal ions from the corresponding metal-sulfide during charging or discharging of the battery. The multi-functional shell at least partially encases the sulfur-based core and is formed from a material that is (i) substantially permeable to the metal ions of the corresponding metal-sulfide and (ii) substantially impermeable to electrolyte solvent molecules and metal polysulfides. 1. A battery electrode composition comprising core-shell composites , each of the composites comprising:a sulfur-based core provided to electrochemically react with metal ions during battery operation to store the metal ions in the form of a corresponding metal-sulfide during discharging or charging of the battery and to release the metal ions from the corresponding metal-sulfide during charging or discharging of the battery; anda multi-functional shell at least partially encasing the sulfur-based core, the shell being formed from a material that is (i) substantially permeable to the metal ions of the corresponding metal-sulfide and (ii) substantially impermeable to electrolyte solvent molecules and metal polysulfides.2. The battery electrode composition of claim 1 , wherein at least a portion of the composites are formed with a substantially spherical claim 1 , particle morphology of the core and shell.3. The battery electrode composition of claim 1 , wherein at least a portion of the composites are formed with a substantially planar claim 1 , flake morphology of the core and shell.4. The battery electrode composition of claim 3 , wherein at least a portion of the substantially planar claim ...

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Номер записи: 18
12-09-2013 дата публикации

CATHODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, CATHODE BATTERY, AND METHOD FOR PRODUCING CATHODE ACTIVE MATERIAL

Номер: US20130236788A1
Автор: TSUNOZAKI Kentaro, Zeng Haisheng
Принадлежит: Asahi Glass Company, Limited

The present invention provides a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charged at a high voltage, a cathode, a lithium ion secondary battery and a method for producing a cathode active material for a lithium ion secondary battery. The cathode active material comprises particles (II) having an oxide (I) of at least one metal element selected from Zr, Ti and Al locally distributed at the surface of a lithium-containing composite oxide comprising Li element and at least one transition metal element selected from the group consisting of Ni, Co and Mn (provided that the molar amount of the Li element is more than 1.2 times the total molar amount of said transition metal element). 1. A cathode active material for a lithium ion secondary battery , which comprises particles (II) having an oxide (I) of at least one metal element selected from Zr , Ti and Al locally distributed at the surface of a lithium-containing composite oxide comprising Li element and at least one transition metal element selected from the group consisting of Ni , Co and Mn (provided that the molar amount of the Li element is more than 1.2 times the total molar amount of said transition metal element).2. The cathode active material according to claim 1 , wherein the molar amount of at least one metal element selected from the group consisting of Zr claim 1 , Ti and Al claim 1 , is from 0.0001 to 0.05 times the total molar amount of said transition metal element in the lithium-containing composite oxide.3. The cathode active material according to claim 1 , wherein the oxide (I) of said metal element is at least one member selected from the group consisting of ZrO claim 1 , TiOand AlO.5. A method for producing a cathode active material for a lithium ion secondary battery claim 1 , which comprises contacting and heating the following composition (1) and a lithium-containing composite oxide comprising Li element ...

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Номер записи: 19
19-09-2013 дата публикации

CATHODE ACTIVE MATERIAL, METHOD OF MANUFACTURING THE SAME AND BATTERY

Номер: US20130244113A1
Автор: Azuma Hideto, Hosoya Yosuke, Li Guohua, Morita Koji, Morita Nozomu, OOYAMA Tomoyo, Satori Kotaro, Suzuki Kiyohiko, Watanabe Haruo
Принадлежит: SONY CORPORATION

A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode () includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior. 1. A cathode active material comprising:a lithium complex oxide including lithium (Li) and at least one kind selected from the group consisting of cobalt (Co), nickel (Ni) and manganese (Mn); andcoating elements formed on a surface of the lithium complex oxide, said coating elements including phosphorus (P) and aluminum (Al).2. The cathode active material according to claim 1 , comprising:a central section including the lithium complex oxide, anda surface layer being arranged on at least a part of the central section, and including the coating elements.3. The cathode active material according to claim 1 , whereinthe contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.4. The cathode active material according to claim 1 , wherein {'br': None, 'sub': x', 'a', 'b', '2-c, 'LiCoM1O\u2003\u2003(Chemical Formula 1)'}, 'as the lithium complex oxide, at least one kind selected from compounds represented by Chemical Formulas 1, 2 and 3 is included {'br': None, 'sub': y', 'd', 'e', '2-f, 'LiNiM2O\u2003\u2003(Chemical Formula 2)'}, '(where M1 represents at least one kind selected from the group consisting of nickel (Ni), manganese (Mn), magnesium (Mg), ...

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Номер записи: 20
03-10-2013 дата публикации

GRAPHENE IN LITHIUM ION BATTERIES

Номер: US20130260189A1
Автор: Schaefer Tim
Принадлежит:

A lithium ion battery comprising at least two electrodes, each comprising at least one metallic substrate and one material able to intercalate metallic lithium or lithium ions or which can conduct lithium ions and with which the metallic substrate can be coated, wherein the metallic substrate and the material each form a boundary layer between them; one separator which separates the electrodes from one another and with which the material of the electrodes is coated, wherein the material and the separator form respective boundary layers between them, characterized in that a layer of material comprising or consisting of graphene extends at least partially into at least one of said boundary layers. 114-. (canceled)15. A lithium ion battery comprising:(i) a first electrode comprising at least one first metallic substrate and one first active material able to intercalate metallic lithium or lithium ions or which can conduct lithium ions and with which the first metallic substrate is coated, wherein the first metallic substrate and the first active material form a first boundary layer between them;(ii) a second electrode comprising at least one second metallic substrate and one second active material able to intercalate metallic lithium or lithium ions or which can conduct lithium ions and with which the second metallic substrate is coated, wherein the second metallic substrate and the second active material form a second boundary layer between them; and(iii) a separator which separates the first electrode and the second electrode from one another and which coats the first active material and the second active material, wherein the first active material and the separator form a third boundary layer between them, and the second active material and the separator form a fourth boundary layer between them,wherein a layer of a third material comprising grapheme extends at least partially into at least one of said boundary layers.16. The lithium ion battery according to claim ...

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Номер записи: 21
10-10-2013 дата публикации

POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND BATTERY MODULE

Номер: US20130266843A1
Автор: Fukunaga Takao, Hara Tomitaro, Iguchi Takayasu, Kitagawa Takao, YAMAMOTO Yoshitaka
Принадлежит:

The present invention provides a positive electrode for a non-aqueous electrolyte secondary battery in which the charge/discharge rate of a secondary battery is increased by increasing the discharge/discharge rate of the positive electrode as a result of increasing the rate of incorporation and release of lithium ions in olivine-type phosphorous complex compound particles, a non-aqueous electrolyte secondary battery provided with this positive electrode for a non-aqueous electrolyte secondary battery, and a battery module provided with this non-aqueous electrolyte secondary battery. The positive electrode for a non-aqueous electrolyte secondary battery of the present invention is a positive electrode for a non-aqueous electrolyte secondary battery containing olivine-type lithium complex compound particles having a carbonaceous film formed on the surface thereof as a positive electrode active material, in which the coverage factor of the carbonaceous film relative to the surface area of the olivine-type lithium complex compound particles is preferably 95% or more, and the packed density of the olivine-type lithium complex compound particles in this positive electrode for a non-aqueous electrolyte secondary battery is preferably 0.90 g/cmto 1.09 g/cm. 1. A positive electrode for a non-aqueous electrolyte secondary battery containing olivine-type lithium complex compound particles having a carbonaceous film formed on the surface thereof as a positive electrode active material , whereinthe coverage factor of the carbonaceous film relative to the surface area of the olivine-type lithium complex compound particles is 95% or more.2. The positive electrode for a non-aqueous electrolyte secondary battery according to claim 1 , wherein the packed density of the olivine-type lithium complex compound particles in the positive electrode for a non-aqueous electrolyte secondary battery is 0.90 g/cmto 1.09 g/cm.3. A non-aqueous electrolyte secondary battery provided with the ...

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Номер записи: 22
10-10-2013 дата публикации

POSITIVE ELECTRODE MATERIAL AND POSITIVE ELECTRODE FOR NICKEL-ZINC SECONDARY BATTERY AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE

Номер: US20130266863A1
Автор: Li Ruiling
Принадлежит: Guangdong Powerlink Energy Co., Ltd.

The present invention provides a positive electrode material for a nickel-zinc secondary battery, a positive electrode for a nickel-zinc secondary battery and a method for preparing the positive electrode. The positive electrode material for a nickel-zinc secondary battery provided by the present invention includes: 68 wt %˜69 wt % positive electrode active material, 0.6 wt %˜1 wt % yttrium oxide, 0.2 wt %˜0.6 wt % calcium hydroxide, 3.5 wt %˜4 wt % nickel powder, and a binder in balance; the positive electrode active material being a spherical nickel hydroxide coated with Co (III). The positive electrode material for a nickel-zinc secondary battery provided by the present invention contains no Co(II) ion and cadmium ion. The positive electrode prepared by the positive electrode material provided by the present invention can reduce the amount of hydrogen evolved in the battery while ensuring relatively high electrode charging/discharging capacity. 1. A positive electrode material for a nickel-zinc secondary battery , characterized in the positive electrode material comprising:{'sup': '3+', '68 wt %˜69 wt % positive electrode active material, 0.6 wt %˜1 wt % yttrium oxide, 0.2 wt %˜0.6 wt % calcium hydroxide, 3.5 wt %˜4 wt % nickel powder, and a binder in balance; the positive electrode active material being a spherical nickel hydroxide coated with Co.'}2. The positive electrode material according to claim 1 , characterized in that the yttrium oxide has a particle diameter of 90 to 120 mesh claim 1 , the calcium hydroxide has a particle diameter of 70 to 90 mesh claim 1 , and the nickel powder has a particle diameter of 50 to 70 mesh.3. The positive electrode material according to claim 1 , characterized in that the binder is a mixture of polytetrafluoroethylene emulsion and carboxymethyl cellulose solution claim 1 , or a mixture of polytetrafluoroethylene emulsion and hydroxypropyl methyl cellulose solution.4. A positive electrode for a nickel-zinc secondary battery ...

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Номер записи: 23
24-10-2013 дата публикации

ELECTRODE ACTIVE MATERIAL, NONAQUEOUS SECONDARY BATTERY ELECTRODE, AND NONAQUEOUS SECONDARY BATTERY

Номер: US20130280604A1
Автор: INOUE Takao, OGIHARA Nobuhiro
Принадлежит: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

An electrode active material of the present invention is made of a layered composition including organic backbone layers containing an aromatic compound that is a dicarboxylic acid anion having a naphthalene backbone; and alkali metal element layers containing an alkali metal element coordinated to oxygen contained in the carboxylic acid anion to form a backbone. The layered composition has an interplanar spacing between (002) planes of 0.42400 to 0.42800 nm, an interplanar spacing between (102) planes of 0.37000 to 0.37600 nm, an interplanar spacing between (211) planes of 0.32250 to 0.32650 nm, and an interplanar spacing between (112) planes of 0.30400 to 0.30700 nm, as measured by X-ray diffraction. Preferably, the layered composition has an interplanar spacing between (200) planes of 0.50500 to 0.50950 nm as measured by X-ray diffraction. 1. An electrode active material comprising a layered composition including:organic backbone layers containing an aromatic compound that is a dicarboxylic acid anion having two or more aromatic ring structures; andalkali metal element layers containing an alkali metal element coordinated to oxygen contained in the carboxylic acid anion to form a backbone,wherein the aromatic compound contained in the organic backbone layers has a naphthalene backbone, andwherein the layered composition has an interplanar spacing between (002) planes of 0.42400 to 0.42800 nm, an interplanar spacing between (102) planes of 0.37000 to 0.37600 nm, an interplanar spacing between (211) planes of 0.32250 to 0.32650 nm, and an interplanar spacing between (112) planes of 0.30400 to 0.30700 nm, as measured by X-ray diffraction.2. The electrode active material according to claim 1 , wherein the layered composition has an interplanar spacing between (200) planes of 0.50500 to 0.50950 nm as measured by X-ray diffraction.3. The electrode active material according to claim 1 , wherein the layered composition has an interplanar spacing between (200) planes of 0 ...

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Номер записи: 24
31-10-2013 дата публикации

METHOD FOR PREPARING ANODE ACTIVE MATERIAL

Номер: US20130288106A1
Автор: CHANG Sung-Kyun, CHANG WonSeok, HAN JungMin
Принадлежит:

Disclosed is a method including (a) mixing a precursor of a material for preparing at least one material selected from the group consisting of low crystalline carbon and amorphous carbon with a hydrophilic material including an oxide capable of intercalating and deintercalating ions, followed by purification to prepare a mixture for coating, (b) mixing the mixture for coating with a crystalline carbon-based material to prepare a core-shell precursor in which the mixture for coating is coated on a core including the crystalline carbon-based material, and (c) calcining the core-shell precursor to carbonize the material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon into the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon. 1. A method for preparing an anode active material comprising a core comprising a crystalline carbon-based material and a composite coating layer comprising at least one material selected from the group consisting of low crystalline carbon and amorphous carbon and a hydrophilic material comprising an oxide capable of intercalating and deintercalating ions , the method comprising:(a) mixing a precursor of a material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon with the hydrophilic material comprising the oxide capable of intercalating and deintercalating ions, followed by purification to prepare a mixture for coating;(b) mixing the mixture for coating with the crystalline carbon-based material to prepare a core-shell precursor in which the mixture for coating is coated on the core comprising the crystalline carbon-based material; and(c) calcining the core-shell precursor to carbonize the material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon into the at least one material ...

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Номер записи: 25
31-10-2013 дата публикации

NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, RECHARGEABLE LITHIUM BATTERY INCLUDING SAME AND METHOD OF PREPARING RECHARGEABLE LITHIUM BATTERY

Номер: US20130288130A1
Автор: Kim Jake, Sheem Kyeu-Yoon
Принадлежит: Samsung SDI Co., Ltd.

A negative electrode for a rechargeable lithium battery that includes a negative active material layer including a carbon-based material having a peak of about 20 degrees to 30 degrees at a (002) plane in an X-ray diffraction pattern using a CuKα ray, and an SEI (solid electrolyte interface) passivation film including at least one material selected from an organic material and an inorganic material and having an average thickness of about 10 nm to about 50 nm on the surface of the active material layer of the electrode. 1. A negative electrode for a rechargeable lithium battery , the negative electrode comprising:a negative active material layer comprising a carbon-based material having a peak of about 20 degrees to 30 degrees at a (002) plane in an X-ray diffraction pattern using a CuKα ray; andan SEI (solid electrolyte interface) passivation film comprising at least one material selected from an organic material and an inorganic material and having an average thickness of about 10 nm to about 50 nm on the surface of the negative active material layer of the negative electrode.2. The negative electrode of claim 1 , wherein the carbon-based material comprises at least one selected from soft carbon and graphite.3. The negative electrode of claim 1 , wherein the carbon-based material has an average particle diameter of about 1 um to about 20 um.4. The negative electrode of claim 1 , wherein the organic material comprises at least one selected from ROCOLi (R is a C1 to C10 alkyl group) claim 1 , R(OCOCHCH)Li (Ris a C1 to C10 alkyl group claim 1 , and n is an integer ranging from about 1 to about 25) claim 1 , R(CHCHO)Li (Ris a C1 to C10 alkyl group claim 1 , and m is an integer ranging from about 1 to about 25) claim 1 , and NRRR(R claim 1 , Rand Rare C1 to C10 alkyl groups).5. The negative electrode of claim 1 , wherein the inorganic material comprises at least one selected from LiF claim 1 , LiO claim 1 , LiCOand LiPFO (0 Подробнее

Номер записи: 26
07-11-2013 дата публикации

METHOD FOR PREPARING ANODE ACTIVE MATERIAL

Номер: US20130295433A1
Автор: CHANG Sung-Kyun, CHANG WonSeok, HAN JungMin
Принадлежит:

Disclosed is a method including (a) mixing a precursor of a material for preparing at least one material selected from the group consisting of low crystalline carbon and amorphous carbon with a metal and/or a non-metal capable of intercalating and deintercalating ions, followed by purification to prepare a mixture for coating, (b) mixing the mixture for coating with a crystalline carbon-based material to prepare a core-shell precursor in which the mixture for coating is coated on a core including the crystalline carbon-based material, and (c) calcining the core-shell precursor to carbonize the material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon into the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon. 1. A method for preparing an anode active material comprising a core comprising a crystalline carbon-based material and a composite coating layer comprising at least one material selected from the group consisting of low crystalline carbon and amorphous carbon and a metal and/or a non-metal capable of intercalating and deintercalating ions , the method comprising:(a) mixing a precursor of a material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon with the metal and/or non-metal capable of intercalating and deintercalating ions, followed by purification to prepare a mixture for coating;(b) mixing the mixture for coating with the crystalline carbon-based material to prepare a core-shell precursor in which the mixture for coating is coated on the core comprising the crystalline carbon-based material; and(c) calcining the core-shell precursor to carbonize the material for preparing the at least one material selected from the group consisting of low crystalline carbon and amorphous carbon into the at least one material selected from the group consisting of low ...

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Номер записи: 27
07-11-2013 дата публикации

Composite Anodes with an Interfacial Film

Номер: US20130295457A1
Автор: XU Wanli
Принадлежит: ELECTROCHEMICAL MATERIALS

A composite anode for lithium secondary battery, which has an active anode material layer formed on a conductive substrate and an interfacial film coated on the active anode material layer, wherein the active anode material layer includes carbonaceous materials, other active and inactive materials, and a binder. The anode increases degree of the anode active material utilization and the cycle life and characteristic and capacity of the battery can be improved. 1. A composite anode , comprising:a conductive current collector;an anode active material layer comprising at least one active material selected from the group consisting of carbon, silicon, germanium, tin, indium, gallium, aluminum, and boron; andan interfacial film covalently bonded onto the anode active material layer.2. The composite anode of claim 1 , wherein the interfacial film is a layer of polymer and wherein the polymer is made of about 10 to 100 claim 1 ,000 monomer molecules.3. The composite anode of claim 1 , wherein the interfacial film has a thickness of about 0.1 to 50 micrometers.4. The composite anode of claim 1 , wherein the interfacial film is formed on the anode active material layer prior to being assembled in a lithium secondary cell.5. The composite anode of claim 1 , wherein the anode active material layer further includes at least one conductive agent selected from the group consisting of carbon black claim 1 , graphite claim 1 , carbon fiber claim 1 , and etc.6. The composite anode of claim 1 , wherein the anode active material layer further includes a polymer binder selected from claim 1 , polyvinylidene fluoride claim 1 , sodium carboxymethyl cellulose claim 1 , styrene-butadiene rubber claim 1 , or combinations thereof7. The composite anode of claim 2 , wherein the monomer molecules include 1 to about 20 functional groups per molecule and wherein the functional groups are selected from the group consisting of an amide claim 2 , an alkoxy claim 2 , an acetoxy claim 2 , an acryloxy ...

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Номер записи: 28
14-11-2013 дата публикации

ELECTRODE ACTIVE MATERIAL CONTAINING POLYDOPAMINE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Номер: US20130302666A1
Автор: KIM JangBae, LEE Jae Hyun, LEE SeongMin, PARK Tae Jin
Принадлежит:

Disclosed are an electrode active material including lithium metal oxide particles and a polydopamine layer formed on a surface of each of the lithium metal oxide particles, and a lithium secondary battery including the same. 1. An electrode active material comprising: particles of a lithium metal oxide; and a polydopamine layer formed on a surface of each of the particles.2. The electrode active material according to claim 1 , wherein the polydopamine layer contains moisture.3. The electrode active material according to claim 2 , wherein a weight of the electrode active material continuously decreases as temperature increases claim 2 , in thermogravimetric analysis (TGA).4. The electrode active material according to claim 1 , wherein an amount of polydopamine is in a range of 0.5 wt % to 5 wt % based on a total weight of the electrode active material.5. The electrode active material according to claim 1 , wherein the lithium metal oxide is represented by Formula (1) below:{'br': None, 'sub': a', 'b', '4-c', 'c, 'LiM′OA\u2003\u2003(1)'}wherein M′ is at least one element selected from the group consisting of Ti, Sn, Cu, Pb, Sb, Zn, Fe, In, Al, and Zr;0.1≦a≦4 and 0.2≦b≦4, wherein a and b are determined according to oxidation number of M′;0≦c<0.2, wherein c is determined according to oxidation number of A; andA is at least one monovalent or divalent anion.6. The electrode active material according to claim 5 , wherein the lithium metal oxide of Formula (1) is represented by Formula (2) below:{'br': None, 'sub': a', 'b', '4, 'LiTiO\u2003\u2003(2)'}wherein 0.5≦a≦3 and 1≦b≦2.5.7. The electrode active material according to claim 6 , wherein the lithium metal oxide is LiTiOor LiTiO.8. The electrode active material according to claim 1 , wherein the lithium metal oxide is a spinel-structure oxide represented by Formula (3) below:{'br': None, 'sub': x', 'y', '2-y', '4-z', 'z, 'LiMMnOA\u2003\u2003(3)'}wherein 0.9≦x≦1.2, 0 Подробнее

Номер записи: 29
14-11-2013 дата публикации

CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

Номер: US20130302677A1
Автор: Kim Jihyun, LEE Minhee, LIM SooHyun
Принадлежит: LG CHEM, LTD.

Disclosed is a cathode active material comprising a lithium manganese composite oxide with a spinel structure represented by the following Formula 1, wherein the lithium manganese composite oxide is surface-coated with a conductive polymer in an area of 30 to 100%, based on the surface area of the lithium manganese composite oxide: 1. A cathode active material comprising a lithium manganese composite oxide with a spinel structure represented by the following Formula 1 , wherein the lithium manganese composite oxide is surface-coated with a conductive polymer in an area of 30 to 100% , based on the surface area of the lithium manganese composite oxide:{'br': None, 'sub': x', 'y', '2−y', '4−z', 'z, 'LiMMnOA\u2003\u2003(1)'}wherein 0.9≦x≦1.2, 0 Подробнее

Номер записи: 30
14-11-2013 дата публикации

ANODE ACTIVE MATERIAL AND THE SECONDARY BATTERY COMPRISING THE SAME

Номер: US20130302680A1
Автор: LEE SeongMin, LIM SooHyun
Принадлежит:

Disclosed is an anode active material comprising a lithium metal oxide represented by the following Formula 1, wherein the anode active material is surface-coated with a silane compound and a silicon content of the silane compound is 0.01 to 5% by weight, based on the total amount of the anode active material: 1. An anode active material comprising a lithium metal oxide represented by the following Formula 1 , {'br': None, 'sub': a', 'b', '4−c', 'c, 'LiM′OA\u2003\u2003(1)'}, 'wherein the anode active material is surface-coated with a silane compound and a silicon content of the silane compound is 0.01 to 5% by weight, based on the total amount of the anode active materialwherein M′ is at least one element selected from the group consisting of Ti, Sn, Cu, Pb, Sb, Zn, Fe, In, Al and Zr;a and b are determined according to an oxidation number of M′ within ranges of 0.1≦a≦4 and 0.2≦b≦4;c is determined according to an oxidation number within a range of 0≦c<0.2; andA is at least one monovalent or bivalent anion.2. The anode active material according to claim 1 , wherein the silane compound is represented by the following Formula a:{'br': None, 'sub': 1', '2', '3', '4, 'R—Si(R)(R)—R\u2003\u2003(a)'}{'sub': 1', '2', '3', '4', '1', '20', '1', '20', '1', '20', '1', '20', '1', '20', '1', '20', '3', '20', '6', '18', '2', '18, 'wherein one or more of R, R, Rand Rare each independently hydrogen, a halogen, alkylamino, dialkylamino, alkyl alcohol, C-Calkyl, C-Calkenyl, C-Calkynyl, C-Calkoxy, C-Calkoxy carbonyl, C-Cacyl, C-Ccycloalkyl, C-Caryl, C-Callyl, nitrile, silazane or phosphate.'}3. The anode active material according to claim 2 , wherein in the silane compound of Formula a claim 2 , one or more of Rto Rare a halogen claim 2 , silazane or C-Calkoxy claim 2 , C-Caryl claim 2 , or C-Callyl claim 2 , and Ris C-Calkyl claim 2 , nitrile claim 2 , fluorine or phosphate.4. The anode active material according to claim 2 , wherein claim 2 , in the silane compound of Formula a claim 2 ...

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Номер записи: 31
14-11-2013 дата публикации

CATHODE ACTIVE MATERIAL AND THE SECONDARY BATTERY COMPRISING THE SAME

Номер: US20130302681A1
Автор: LEE Jae Hyun, LIM SooHyun
Принадлежит: LG CHEM, LTD.

Disclosed is a cathode active material comprising a lithium nickel manganese composite oxide with a spinel structure represented by the following Formula 1, wherein the cathode active material is surface-coated with a silane compound and a silicon content of the silane compound is 0.01 to 5% by weight, based on the total amount of the cathode active material: 1. A cathode active material comprising a lithium nickel manganese composite oxide with a spinel structure represented by the following Formula 1 , wherein the cathode active material is surface-coated with a silane compound , and a silicon content of the silane compound is 0.01 to 5% by weight , based on the total amount of the cathode active material:{'br': None, 'sub': x', 'y', '2−y', '4−z', 'z, 'LiMMnOA\u2003\u2003(1)'}wherein 0.9≦x≦1.2, 0 Подробнее

Номер записи: 32
14-11-2013 дата публикации

ACTIVE MATERIAL PARTICLES AND USE OF SAME

Номер: US20130302687A1
Автор: Ikeuchi Kenji, Imaizumi Shin, Mori Kensaku, MORITA Masahiro, Nagai Hiroki, Osako Toshiyuki, Toya Hiroyuki
Принадлежит:

Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m/g. 113-. (canceled)14. Active material particles for a lithium secondary battery , whereinthe active material particles have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide and a hollow portion formed inside the secondary particles,the lithium transition metal oxide is a compound having a layered structure that contains nickel as a constituent element thereof,the hollow portion is surrounded by the secondary particle forming an outer shell of the active material particle,the outer shell has through holes that penetrate the outer shell to the hollow portion from the outside, and{'sup': '2', 'BET specific surface area of the active material particles is from 0.5 to 1.9 m/g.'}15. The active material particles according to claim 14 , wherein the opening width of the through hole is on average 0.01 μm or more.16. The active material particles according to claim 14 , wherein the average hardness of the active material particles claim 14 , as obtained by measuring dynamic hardness under conditions of a loading speed of 0.5 mN/sec to 3 mN/sec using a flat diamond indenter having a diameter of 50 μm claim 14 , is 0.5 MPa or more.17. The active material particles according to claim 14 , wherein the number of the through holes per particle of the ...

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Номер записи: 33
14-11-2013 дата публикации

POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE POSITIVE ELECTRODE

Номер: US20130302689A1
Автор: Jito Daizo, Ogasawara Takeshi
Принадлежит: SANYO ELECTRIC CO., LTD.

It is an object of the present invention to provide a positive electrode for nonaqueous electrolyte secondary batteries that can suppress decreases in the discharge capacity and discharge voltage even when continuous charging is performed at high temperature and that can also suppress decreases in the discharge voltage and energy density even in the charge and discharge after the continuous charging, and to provide a nonaqueous electrolyte secondary battery that uses the positive electrode. The positive electrode includes a positive electrode active material composed of a mixture containing lithium cobalt oxide having a surface to which an erbium compound is partly adhered and lithium nickel cobalt manganese oxide and a binder. The content of the lithium nickel cobalt manganese oxide is 1% by mass or more and 50% by mass or less relative to the total amount of the positive electrode active material. 112-. (canceled)13. A positive electrode for nonaqueous electrolyte secondary batteries comprising a positive electrode active material composed of a mixture containing lithium cobalt oxide having a surface to which a rare-earth compound is partly adhered and lithium nickel cobalt manganese oxide; and a binder , wherein the content of the lithium nickel cobalt manganese oxide is 1% by mass or more and 50% by mass or less relative to the total amount of the positive electrode active material.14. The positive electrode for nonaqueous electrolyte secondary batteries according to claim 13 , wherein the content of the lithium nickel cobalt manganese oxide is 3% by mass or more and 30% by mass or less relative to the total amount of the positive electrode active material.15. The positive electrode for nonaqueous electrolyte secondary batteries according to claim 13 , wherein the content of the lithium nickel cobalt manganese oxide is 5% by mass or more and 20% by mass or less relative to the total amount of the positive electrode active material.16. The positive electrode for ...

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Номер записи: 34
21-11-2013 дата публикации

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, MEHTOD FOR PRODUCING THE SAME, POSITIVE ELECTRODE FOR NONAQUEOUS ELECTOLYTE SECONDARY BATTERY USING THE POSITIVE ELECTRODE ACTIVE MATERIAL, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE POSITIVE ELECTRODE

Номер: US20130309567A1
Автор: Ogasawara Takeshi, Ogata Atsushi
Принадлежит: SANYO ELECTRIC CO., LTD.

An object of the present invention is to provide a positive electrode active material for a nonaqueous electrolyte secondary battery etc. which are capable of suppressing the generation of gas during charge by suppressing a reaction between a positive electrode and an electrolyte decomposition product moved from a negative electrode and a reaction between the positive electrode and the electrolyte, and which are thereby capable of significantly improving battery characteristics such as cycling characteristics. The positive electrode active material includes a compound composed of sodium, fluorine, and erbium and adhered to a surface of lithium cobalt oxide, and can be produced by adding, while adjusting pH, an aqueous solution prepared by dissolving erbium nitrate pentahydrate to a suspension containing lithium cobalt oxide and sodium fluoride. 113-. (canceled)14. A positive electrode active material for a nonaqueous electrolyte secondary battery , the positive electrode active material comprising a lithium transition metal composite oxide and a compound composed of an alkali metal element , a fluorine element , and a rare earth element , wherein the compound is mainly present on a surface of the lithium transition metal composite oxide.15. The positive electrode active material for a nonaqueous secondary battery according to claim 14 , wherein the compound composed of an alkali metal element claim 14 , a fluorine element claim 14 , and a rare earth element is adhered to the surface of the lithium transition metal composite oxide.16. The positive electrode active material for a nonaqueous secondary battery according to claim 14 , wherein the compound composed of an alkali metal element claim 14 , a fluorine element claim 14 , and a rare earth element has an average particle diameter of 1 nm or more and 100 nm or less.17. The positive electrode active material for a nonaqueous secondary battery according to claim 15 , wherein the compound composed of an alkali metal ...

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Номер записи: 35
21-11-2013 дата публикации

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE POSITIVE ELECTRODE ACTIVE MATERIAL, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE POSITIVE ELECTRODE

Номер: US20130309576A1
Автор: Ogasawara Takeshi, Ogata Atsushi
Принадлежит: SANYO ELECTRIC CO., LTD.

An object of the present invention is to provide a positive electrode active material for a nonaqueous electrolyte secondary battery etc. which are capable of suppressing a reaction between a positive electrode and an electrolyte decomposition product moved from a negative electrode and a reaction between the positive electrode and the electrolyte, and which are thereby capable of significantly improving battery characteristics such as continuous charge characteristics (particularly, continuous charge characteristics at a high temperature), cycling characteristics, etc. The positive electrode active material includes a compound containing a rare earth element and fluorine and adhered to a surface of a lithium transition metal composite oxide, the compound having an average particle diameter of 1 nm or less and 100 nm or more. 19-. (canceled)10. A positive electrode active material for a nonaqueous electrolyte secondary battery , the positive electrode active material comprising a compound containing a fluorine element and a rare earth element and adhered to a surface a lithium transition metal composite oxide , wherein the compound has an average particle diameter of 1 nm or more and 100 nm or less.11. The positive electrode active material for a nonaqueous secondary battery according to claim 10 , wherein the compound containing a fluorine element and a rare earth element is erbium fluoride.12. The positive electrode active material for a nonaqueous secondary battery according to claim 10 , wherein a ratio of the compound containing a fluorine element and a rare earth element to the lithium transition metal composite oxide is 0.01% by mass or more and 0.3% by mass or less in terms of rare earth element.13. The positive electrode active material for a nonaqueous secondary battery according to claim 11 , wherein a ratio of the compound containing a fluorine element and a rare earth element to the lithium transition metal composite oxide is 0.01% by mass or more and 0 ...

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Номер записи: 36
28-11-2013 дата публикации

COMPOSITE ACTIVE MATERIAL, METHOD FOR PRODUCING COMPOSITE ACTIVE MATERIAL, AND BATTERY

Номер: US20130316237A1
Автор: Miki Nariaki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The problem of the present invention is to provide a composite active material, which may restrain cracking and peeling of a coating layer, when the composite active material having an active material and the coating layer for coating the surface thereof is kneaded. The present invention solves the above-mentioned problem by providing a composite active material including an active material and a coating layer for coating the surface of the above-mentioned active material, in which microparticles are disposed on the surface thereof, characterized in that the above-mentioned microparticles have a smaller particle diameter than the particle diameter of the active material, and contain Si. 1. A composite active material comprising: an active material , a coating layer for coating a surface of the active material , and a microparticle disposed on a surface of the coating layer ,wherein the microparticle has a smaller particle diameter than a particle diameter of the active material, and contains Si, andthe coating layer contains Si.2. The composite active material according to claim 1 , wherein the coating layer has: a foundation coating layer for coating the surface of the active material and contains Si; and a microparticle fixed layer for fixing the microparticle and continuously formed on the foundation coating layer.3. The composite active material according to claim 1 , wherein the coating layer is a monolayer in which the microparticle contacts with the active material.4. A method for producing a composite active material comprising an active material claim 1 , a coating layer for coating a surface of the active material claim 1 , and a microparticle disposed on a surface of the coating layer claim 1 , such that the microparticle has a smaller particle diameter than a particle diameter of the active material claim 1 , and contains Si claim 1 , and the coating layer contains Si claim 1 ,wherein the method comprises a coating layer forming step of coating a coating ...

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Номер записи: 37
05-12-2013 дата публикации

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, NONAQUEOUS ELECTROLYTE CELL, AND METHOD OF PREPARING POSITIVE ELECTRODE ACTIVE MATERIAL

Номер: US20130323596A1
Автор: Endoh Kazuaki, Fujiki Satoshi, Hosoya Yosuke, Li Guohua, Morita Koji, Motohashi Kazunari
Принадлежит: SONY CORPORATION

Disclosed herein is a positive electrode active material prepared by mixing a lithium-containing compound, a compound containing a transition metal to be put into a solid solution, and a compound containing a metallic element M2 different from the transition metal, and firing the mixture to form composite oxide particles, depositing a compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) on surfaces of the particles, and firing the particles, whereby each of the particles is provided with a concentration gradient such that the concentration of the metallic element M2 increases from the center toward the surface of the particle, and at least one element selected from among (S), (P) and (F) is made present in the form of being aggregated at the surfaces of the composite oxide particles. 1. A positive electrode active material prepared by:mixing a lithium-containing compound, a compound containing a transition metal to be involved in a solid solution, and a compound containing a metallic element M2 different from the transition metal, and firing the mixture to form composite oxide particles;depositing a compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) on surfaces of the composite oxide particles; andfiring the composite oxide particles with the compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) deposited thereon;whereby each of the composite oxide particles is provided with a concentration gradient such that the concentration of the metallic element M2 increases from the center toward the surface of the composite oxide particle, andat least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) is made present in the form of being aggregated at the surfaces of the composite oxide particles.2. The positive electrode active material according to claim 1 ,wherein the transition metal is at ...

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Номер записи: 38
19-12-2013 дата публикации

ELECTRODE ACTIVE MATERIAL AND METHOD OF PRODUCING THE SAME

Номер: US20130337329A1
Автор: Oono Kouji, Oshitari Satoru
Принадлежит: Sumitomo Osaka Cement Co., Ltd.

Provided is an electrode active material that is obtained by coating a surface of each particle of LiADO(provided that, A represents at least one selected from the group consisting of Mn and Co, D represents one or more selected from the group consisting of P, Si, and S, 0 Подробнее

Номер записи: 39
26-12-2013 дата публикации

CRUMPLED GRAPHENE-ENCAPSULATED NANOSTRUCTURES AND LITHIUM ION BATTERY ANODES MADE THEREFROM

Номер: US20130344392A1
Автор: Huang Jiaxing, Jang Hee Dong, Luo Jiayan
Принадлежит: Northwestern University

Capsules comprising crumpled graphene sheets that form a crumpled graphene shell encapsulating an internal cargo comprising nanostructures of a second component are provided. Also provided are anode materials for lithium ion batteries comprising the capsules, wherein the nanostructures are composed of an electrochemically active material, such as silicon. 1. A material comprising a layer of capsules , the capsules comprising:a crumpled graphene shell comprising graphene sheets having a crumpled morphology; andsilicon nanostructures encapsulated within the crumpled graphene shell;wherein the average size of the capsules is less than 1 μm.2. The material of claim 1 , wherein the graphene sheets are micron-sized graphene sheets.3. The material of claim 1 , wherein the silicon nanostructures are nanoparticles having diameters in the range from 50 to 100 nm.4. A lithium ion battery comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'an anode comprising the material of ;'}a counter electrode; andan electrolyte in electrical communication with the anode and the counter electrode.5. The battery of claim 4 , wherein the anode further comprises a binder.6. The battery of claim 4 , wherein the battery is characterized by a coulombic efficiency reaching 99% after 20 cycles at a charge voltage of 2V and a current density of 1 A/g.7. The battery of claim 6 , wherein the battery is characterized by a coulombic efficiency reaching 99% after 10 cycles at a charge voltage of 2V and a current density of 1 A/g.8. The battery of claim 7 , wherein the battery is characterized by a coulombic efficiency reaching 99% after 5 cycles at a charge voltage of 2V and a current density of 1 A/g.9. A method of making sub-micron sized capsules claim 7 , the method comprising:forming an aqueous dispersion comprising graphene oxide sheets and silicon nanostructures;forming aerosol droplets from the aqueous dispersion; andheating the aerosol droplets to evaporate water from the aerosol ...

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Номер записи: 40
26-12-2013 дата публикации

COMPOSITE MATERIAL OF CARBON-COATED GRAPHENE OXIDE, PREPARATION METHOD AND APPLICATION THEREOF

Номер: US20130344393A1
Автор: Pan Jun, Wang Yaobing, Zhou Mingjie
Принадлежит: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LT

A composite material of carbon-coated graphene oxide, its preparation method and application are provided. The method for preparing the composite material comprises the following steps: obtaining graphene oxide; mixing the said graphene oxide and the source of organic carbon according to the mass ratio of 1-10:1 in water to form a mixed solution; making the mixed solution react hydrothermally under the condition of 100˜250° C., cooling, solid-liquid separating, washing, and drying to attain the composite material. The advantages of the preparation method are simple process, low energy consumption, low cost, no pollution and suitable for industrial production. The advantages of composite material are stable structural performance, high electric conductivity. Lithium ion battery and/or capacitor have/has high power density while the composite material is used to prepare the anode material of lithium ion battery and/or capacitor. 1. A method for preparing a carbon-coated graphene oxide composite material , comprising the steps of:providing a graphene oxide;mixing the graphene oxide and an organic carbon source in a mass ratio of 1-10:1 in water to form a mixed solution; andsubjecting the mixed solution to a hydrothermal reaction at 100 to 250° C., cooling, conducting a solid/liquid separation, washing and drying to give the carbon-coated graphene oxide composite material.2. The method for preparing a carbon-coated graphene oxide composite material according to claim 1 , wherein the mass ratio of the graphene oxide and the organic carbon source is 2-5:1.3. The method for preparing a carbon-coated graphene oxide composite material according to claim 1 , wherein claim 1 , in the mixed solution claim 1 , the concentration of the graphene oxide in water is 0.1 to 10 g/ml.4. The method for preparing a carbon-coated graphene oxide composite material according to claim 1 , wherein the organic carbon source is at least one of sucrose claim 1 , glucose and polyethylene glycol.5. ...

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Номер записи: 41
26-12-2013 дата публикации

TIN CARBON COMPOSITE, METHOD FOR PREPARING SAME, BATTERY NEGATIVE ELECTRODE COMPONENT COMPRISING SAME, AND BATTERY HAVING THE NEGATIVE ELECTRODE COMPONENT

Номер: US20130344394A1
Автор: Chen Jizhang, Fang Shaohua, Yang Li
Принадлежит:

Disclosed is a tin-carbon mesoporous composite for a lithium ion battery negative electrode material, and a method for preparing the same. Using a mesoporous molecular sieve as a template, the precursors of tin and carbon are caused to fill the mesopores of the template and carbonized under nitrogen to obtain a composite of stannic oxide and carbon, and the stannic oxide is encapsulated by the carbon; and then the tin-carbon mesoporous composite for lithium ion battery negative electrode material is obtained by hydrothermal treatment, carbonization, etching, and high temperature carbothermic reduction. The tin-carbon mesoporous composite for lithium ion battery negative electrode material synthesized in the present invention has a reversible capacity of 550 mAh·g, after 100 cycles at a current density of 500 mA·g. 1. A tin-carbon composite comprising: mesopores.2. The tin-carbon composite according to claim 1 , wherein the mesopores are formed as a honeycomb structure.3. The tin-carbon composite according to claim 1 , wherein the pore size of the mesopores is 30 nm or less.4. The tin-carbon composite according to claim 1 , wherein the particle size of tin is three times or less of the mesopore size.5. A lithium ion battery negative electrode component comprising the tin-carbon composite according to .6. A lithium ion battery comprising the negative electrode component according to .7. A method for producing a tin-carbon composite having mesopores claim 5 , the method comprising:providing a mesoporous molecular sieve as a template;filling mesopores of the template with a stannous halide and a soluble resole resin having a molecular weight of 300 to 500 followed by carbonization in an inert gas atmosphere to obtain a stannic oxide/carbon composite in which the stannic oxide is covered with the carbon;subjecting the resulting composite to hydrothermal treatment in a polyhydroxy aldehyde solution, separation, washing, and drying followed by carbonization again to cover ...

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Номер записи: 42
02-01-2014 дата публикации

FABRICATION AND USE OF CARBON-COATED SILICON MONOXIDE FOR LITHIUM-ION BATTERIES

Номер: US20140004426A1
Автор: Goertzen Sarah, Kerlau Marie
Принадлежит: Leyden Energy, Inc.

The present invention provides anode materials, methods of producing them, anodes, methods of producing them, electrochemical cells, and lithium-ion batteries, where the anode material comprises a silicon monoxide nanoparticle. In certain embodiments, the silicon monoxide is porous or mesoporous. In certain embodiments, the porous or mesoporous silicon additionally comprises other materials within its pores, such as lithium. 1. An anode material comprising a silicon monoxide nanoparticle , wherein the nanoparticle comprises a carbon-containing outer phase and a silicon monoxide inner phase , andwherein the carbon-containing outer phase is covalently bonded to the silicon monoxide inner phase.2. The anode material of claim 1 , wherein the nanoparticle has a particle diameter of from about 50 nm to 250 nm.3. The anode material of claim 1 , wherein the carbon-containing phase comprises an alkyl or a hydroxyalkyl group claim 1 , and the group is covalently bonded to the silicon monoxide inner phase.4. The anode material of claim 1 , further comprising a binder; wherein the binder encompasses a plurality of nanoparticles.5. The anode material of claim 4 , wherein the binder is selected from the group consisting of carboxymethyl cellulose claim 4 , styrene butadiene rubber claim 4 , alginate claim 4 , polyacrylic acid claim 4 , and a salt thereof.6. The anode material of claim 1 , the anode material comprising:mesoporous silicon particles having an average pore diameter from about 1 nm to 500 nm; andcarboxymethyl cellulose.7. The anode material of claim 6 , wherein the mesoporous silicon particle has a particle diameter of from about 50 nm to 250 nm.8. The anode material of claim 6 , wherein the mesoporous silicon particles comprise lithium in the pores.9. A lithium-ion battery comprising the anode material of .10. A method for preparing the anode material of claim 1 , comprising the steps of:contacting a silicon tetrahalide with a reducing agent under conditions ...

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Номер записи: 43
09-01-2014 дата публикации

NICKEL MANGANESE COMPOSITE HYDROXIDE PARTICLES AND MANUFACTURING METHOD THEREOF, CATHODE ACTIVE MATERIAL FOR A NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF, AND A NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Номер: US20140011090A1
Автор: Ikeuchi Kenji, Imaizumi Shin, Mori Kensaku, Osako Toshiyuki, Toya Hiroyuki
Принадлежит:

Provided are nickel manganese composite hydroxide particles having a small and uniform particle size and having a double structure which enables to obtain a cathode active material having a hollow structure, and a manufacturing method thereof. When obtaining the nickel manganese composite hydroxide by a reaction crystallization, using an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel, a metallic compound that contains manganese and an ammonium ion donor and controlling the pH value that is measured at a standard solution temperature of 25° C. is 10.5 to 12.0, nucleation is performed in an oxidizing atmosphere in which the oxygen concentration is greater than 1% by volume, and then nuclei are grown by switching the atmosphere from the oxidizing atmosphere to a mixed atmosphere of oxygen and inert gas in which the oxygen concentration is 1% by volume or less. 1. A manufacturing method for manufacturing nickel manganese composite hydroxide particles using a reaction crystallization , the nickel manganese composite hydroxide particles being expressed by a general formula of NiMnCoM(OH)(where x+y+z+t=1 , 0.3≦x≦0.7 , 0.1≦y≦0.55 , 0≦z≦0.4 , 0≦t≦0.1 , 0≦a≦0.5 , and M is one or more added elements that are selected from among Mg , Ca , Al , Ti , V , Cr , Zr , Nb , Mo and W) , the manufacturing method comprising:a nucleation step of controlling an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel, a metallic compound that contains manganese, and an ammonium ion donor, so that a pH value thereof that is measured at a standard solution temperature of 25° C. is 12.0 to 14.0, and causing nucleation in an oxidizing atmosphere having an oxygen concentration of greater than 1% by volume; anda particle growth step of controlling an aqueous solution for particle growth, which includes nuclei formed in the nucleation step, so that a pH value that is measured at a standard solution ...

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Номер записи: 44
16-01-2014 дата публикации

Graphene Materials Having Randomly Distributed Two-Dimensional Structural Defects

Номер: US20140015160A1
Автор: HAYNER Cary M., Kung Harold H., Kung Mayfair C., ZHAO XIN
Принадлежит: Northwestern University

Graphene-based storage materials for high-power battery applications are provided. The storage materials are composed of vertical stacks of graphene sheets and have reduced resistance for Li ion transport. This reduced resistance is achieved by incorporating a random distribution of structural defects into the stacked graphene sheets, whereby the structural defects facilitate the diffusion of Li ions into the interior of the storage materials. 1. A method for making an electrode material , the method comprising:exposing a suspension of exfoliated, oxidized graphene sheets to an acid at an acid concentration high enough, and an exposure time long enough, to generate defect pores formed from carbon vacancies in the oxidized graphene sheets;removing the oxidized graphene sheets from the suspension;reducing the oxidized graphene sheets to form a vertical stack of graphene sheets having a random distribution of defect pores distributed therein.2. The method of claim 1 , wherein the average diameter of the defect pores is in the range from about 1 nm to about 100 nm.3. The method of claim 1 , wherein the average density of defect pores in the graphene sheets as measured by the ratio of the average separation distance between adjacent pores to the average pore diameter claim 1 , is at least 3.4. The method of claim 1 , further comprising mixing the oxidized graphene sheets in suspension with electrochemically active nanoparticles claim 1 , such that the nanoparticles are dispersed between the graphene sheets claim 1 , whereby when the oxidized graphene sheets are removed from the suspension and reduced claim 1 , the resulting material comprises a network of graphitic regions comprising crystalline portions of the vertical stack of graphene sheets integrated with a composite comprising disordered portions of the vertical stack of graphene sheets and nanoparticles of the electrochemically active material dispersed between the graphene sheets in the disordered portions of the ...

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Номер записи: 45
23-01-2014 дата публикации

TITANIA-GRAPHENE ANODE ELECTRODE PAPER

Номер: US20140023925A1
Автор: Bennett Wendy D., Choi Daiwon, Graff Gordon L., Liu Jun, Shin Yongsoon
Принадлежит: BATTELLE MEMORIAL INSTITUTE

A method for forming a nanocomposite material, the nanocomposite material formed thereby, and a battery made using the nanocomposite material. Metal oxide and graphene are placed in a solvent to form a suspension. The suspension is then applied to a current collector. The solvent is then evaporated to form a nanocomposite material. The nanocomposite material is then electrochemically cycled to form a nanocomposite material of at least one metal oxide in electrical communication with at least one graphene layer. 1. A battery formed by the process of:providing metal oxide and graphene in a solvent to form a suspension,applying the suspension to a current collector,evaporating the solvent to form an anode,providing a cathode and an electrolyte in electrical communication with the anode;electrochemically cycling the anode to form a nanocomposite material comprising at least one metal oxide in direct electrical communication with at least one graphene layer as part of the anode.2. The battery of wherein the solvent is an organic solvent.3. The battery of wherein the metal oxide is titania.4. The battery of wherein the titania is provided as particles having an average diameter below 50 nm.5. The battery of wherein the titania is provided as particles having an average diameter below 10 nm.6. The battery of wherein the solvent is NMP.7. The battery of wherein the graphene is dispersed in the suspension by a surfactant.8. The battery of wherein graphene particles used to form the nanocomposite material had an average particle size of 2 to 3 μms.9. A battery formed by the process of:dispersing graphene with a surfactant to form a first mixture;providing metal oxide in an aqueous solution to form a second mixture;mixing the first and second mixtures to form a suspension,applying the suspension to a current collector,evaporating the solvent to form an anode,providing a cathode and an electrolyte in electrical communication with the anode;electrochemically cycling the anode to ...

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Номер записи: 46
30-01-2014 дата публикации

NANOCOMPOSITE OF GRAPHENE AND METAL OXIDE MATERIALS

Номер: US20140030181A1
Автор: Aksay Ilhan A., Choi Daiwon, Liu Jun, Wang Donghai, Yang Zhenguo
Принадлежит:

Nanocomposite materials comprising a metal oxide bonded to at least one graphene material. The nanocomposite materials exhibit a specific capacity of at least twice that of the metal oxide material without the graphene at a charge/discharge rate greater than about 10 C. 1. A nanocomposite material comprising a metal oxide bonded directly to a graphene layer , wherein the graphene layer consists essentially of 1 to 147 graphene sheets , the nanocomposite material having a specific capacity at least twice that of the metal oxide without the graphene layer at a charge/discharge rate greater than about 10 C.2. The nanocomposite material of wherein the graphene layer has a carbon to oxygen ratio of 10-500:1.3. The nanocomposite material of wherein the metal oxide is MO claim 1 , and where M is Ti claim 1 , Sn claim 1 , Ni claim 1 , Mn claim 1 , V claim 1 , Si claim 1 , or Co claim 1 , or is a combination thereof.4. The nanocomposite material of wherein the metal oxide is titania.5. The nanocomposite material of wherein the metal oxide is tin oxide.6. The nanocomposite material of including a plurality of graphene layers having metal oxide bonded directly thereto claim 1 , the plurality of graphene layers forming a nanoarchitecture with the metal oxide substantially uniformly distributed throughout the nanoarchitecture.7. The nanocomposite material of wherein the graphene layer comprises functionalized graphene sheets.8. The nanocomposite material of wherein the graphene layer consists essentially of 6 to 29 graphene sheets.9. The nanocomposite material of wherein the graphene layer comprises functionalized graphene sheets.10. The nanocomposite material of wherein the titania is in a mesoporous form.11. The nanocomposite material of wherein the mesoporous titania is in a rutile crystalline structure.12. A method comprising:providing graphene layers in a first mixture, the graphene layers having a first surface and a second surface and thicknesses of 0.5 to 50 nm; ...

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Номер записи: 47
30-01-2014 дата публикации

LITHIUM SECONDARY BATTERY

Номер: US20140030588A1
Автор: Hong Yeon Suk, Lee Byoung Bae, LEE Hyo Jin, Oh Jae Seung, Shim You Jin
Принадлежит: LG CHEM, LTD.

A lithium secondary battery comprising a positive electrode, a negative electrode, a separator inserted between the positive electrode and the negative electrode and a non-aqueous electrolyte is provided. The positive electrode comprises a first positive electrode active material represented by following Chemical Formula 1. And the non-aqueous electrolyte comprises a first lithium salt, a second lithium salt represented by following Chemical Formula 2 and a non-aqueous organic solvent. 1. A lithium secondary battery comprising a positive electrode , a negative electrode , a separator inserted between the positive electrode and the negative electrode , and a non-aqueous electrolyte ,wherein the positive electrode comprises a first positive electrode active material represented by following Chemical Formula 1, and [{'br': None, 'sub': x', 'y', 'z, 'LiMO\u2003\u2003[Chemical Formula 1]'}, {'br': None, 'sup': +', '−, 'LiRCOO\u2003\u2003[Chemical Formula 2]'}], 'the non-aqueous electrolyte comprises a first lithium salt, a second lithium salt represented by following Chemical Formula 2 and a non-aqueous organic solvent,'}{'sub': a', 'b', 'c', '1', '10', '6', '12', '2', '5', '1', '10', '6', '12', '2', '5, 'in Chemical Formulae 1 and 2, M=NiMnCo, in which 0 Подробнее

Номер записи: 48
30-01-2014 дата публикации

LITHIUM SECONDARY BATTERY

Номер: US20140030598A1
Автор: Sakano Mitsuru, Yamashige Hisao
Принадлежит:

The present invention provides a lithium secondary battery having reduced internal resistance. The lithium secondary battery comprises a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode comprises, as a positive electrode active material , a lithium transition metal composite oxide having a layered structure. In a surface region A of a positive electrode active material particle , at least one species among elements belonging to groups 3 to 7 of the periodic table is supplemented by ion implantation. 1. A lithium secondary battery comprising a positive electrode , a negative electrode , and a non-aqueous electrolyte , wherein:the positive electrode comprises, as a positive electrode active material, a lithium transition metal composite oxide having a layered structure; andthe positive electrode active material comprises surface regions supplemented via ion implantation with at least one species among elements belonging to groups 3 to 7 of the periodic table.2. The lithium secondary battery according to claim 1 , wherein the surface regions of the positive electrode active material have a crystal structure in which 1 to 50 (003)-plane dislocations are present per 15 by 15 nm.3. The lithium secondary battery according to claim 1 , wherein the element supplemented to the surface regions of the positive electrode active material comprises at least tungsten.4. The lithium secondary battery according to claim 1 , wherein the element supplemented to the surface regions of the positive electrode active material comprises at least tungsten claim 1 , niobium and zirconium.5. A method for producing a positive electrode active material for lithium secondary batteries claim 1 , with the method comprising:obtaining an untreated active material primarily comprising a lithium transition metal composite oxide having a layered structure; andionically implanting at least one species of supplemental element among elements belonging to ...

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Номер записи: 49
13-02-2014 дата публикации

METHOD FOR PRODUCING CATHODE-ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

Номер: US20140042372A1
Автор: Tonegawa Akihisa
Принадлежит: SHOWA DENKO K.K.

The present invention provides a method for producing a cathode-active material containing an olivine-type lithium metal phosphate for a lithium secondary battery which does not need washing or sintering after hydrothermal synthesis, the method including a step in which hydrothermal synthesis is carried out by using a mixture containing HMnPOand a lithium source as a raw material to produce an olivine-type lithium metal phosphate. 1. A method for producing a cathode-active material for a lithium secondary battery , wherein the method includes a step in which hydrothermal synthesis is carried out by using a mixture containing HMnPOand a lithium source as a raw material to produce an olivine-type lithium metal phosphate.2. The method for producing a cathode-active material for a lithium secondary battery according to claim 1 , wherein at least one of the group consisting of LiOH claim 1 , LiCO claim 1 , CHCOOLi claim 1 , and (COOLi)is used as the lithium source.3. The method for producing a cathode-active material for a lithium secondary battery according to claim 1 , wherein the reaction temperature in the hydrothermal synthesis is 100° C. or more.4. The method for producing a cathode-active material for a lithium secondary battery according to claim 1 , wherein a carbon source is further added to the mixture as the raw material claim 1 , and hydrothermally synthesis is carried out claim 1 , a product obtained by the hydrothermal synthesis is heated in an inert gas atmosphere claim 1 , and an olivine-type lithium metal phosphate having a carbon film on the surface thereof is produced.5. The method for producing a cathode-active material for a lithium secondary battery according to claim 1 , wherein a carbon source is added to an olivine-type lithium metal phosphate which is produced by the hydrothermal synthesis claim 1 , and heated in an inert gas atmosphere claim 1 , and an olivine-type lithium metal phosphate having a carbon film on the surface thereof is produced ...

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Номер записи: 50
13-02-2014 дата публикации

COMPOSITE ANODE ACTIVE MATERIAL, ANODE AND LITHIUM BATTERY EACH INCLUDING THE COMPOSITE ANODE ACTIVE MATERIAL, AND METHOD OF PREPARING THE COMPOSITE ANODE ACTIVE MATERIAL

Номер: US20140045060A1
Автор: Cho Yu-Jeong, Do Ui-Song, Kim Jae-Myung, Lee So-Ra, Lee Su-Kyung, Park Sang-Eun, Shin Chang-Su
Принадлежит: Samsung SDI Co., Ltd.

In an aspect, a composite anode active material including a composite core; and a coating layer covering at least a region of the composite core, wherein the composite core comprises a carbonaceous substrate; and a nanostructure disposed on the substrate, and the coating layer includes a metal oxide; an anode and a lithium battery each including the composite anode active material; and a method of preparing the composite anode active material are provided. 1. A composite anode active material comprising:a composite core; anda coating layer covering at least a region of the composite core, wherein the composite core comprises a carbonaceous substrate; and a metal/metalloid nanostructure disposed on the substrate, and the coating layer comprises a metal oxide.2. The composite anode active material of claim 1 , wherein the metal in the metal oxide is at least one selected from among the elements of Groups 2 to 13 of the periodic table of elements.3. The composite anode active material of claim 1 , wherein the metal of the metal oxide is at least one selected from the group consisting of zirconium (Zr) claim 1 , nickel (Ni) claim 1 , cobalt (Co) claim 1 , manganese (Mn) claim 1 , boron (B) claim 1 , magnesium (Mg) claim 1 , calcium (Ca) claim 1 , strontium (Sr) claim 1 , barium (Ba) claim 1 , titanium (Ti) claim 1 , vanadium (V) claim 1 , iron (Fe) claim 1 , copper (Cu) claim 1 , and aluminum (Al).5. The composite anode active material of claim 1 , wherein the metal oxide comprises at least one selected from the group consisting of titanium oxide claim 1 , aluminum oxide claim 1 , chromium trioxide claim 1 , zinc oxide claim 1 , copper oxide claim 1 , magnesium oxide claim 1 , zirconium dioxide claim 1 , molybdenum trioxide claim 1 , vanadium pentoxide claim 1 , niobium pentoxide claim 1 , and tantalum pentoxide.6. The composite anode active material of claim 1 , wherein the metal oxide is inert with respect to lithium.7. The composite anode active material of claim 1 , ...

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Номер записи: 51
13-02-2014 дата публикации

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE USING THE SAME AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Номер: US20140045064A1
Автор: Nakai Hideki, Odani Toru
Принадлежит: SONY CORPORATION

A positive electrode active material includes: a particle containing a positive electrode material capable of intercalating and deintercalating an electrode reactant; and a film provided in at least a part of the particle and having a peak of CHS, CHS or CHS obtained by cation analysis by time of flight secondary ion mass spectrometry. 1. A non-aqueous electrolyte secondary battery comprising:a positive electrode having a positive electrode active material;a negative electrode;a separator; andan electrolyte, whereinthe positive electrode active material includesa particle containing a positive electrode material capable of intercalating and deintercalating an electrode reactant; anda film provided in at least a part of the particle wherein{'sub': 2', '5', '3', '7', '4', '9, 'sup': +', '+', '+, 'a film having a peak of CHS, CHS or CHS obtained by cation analysis by time of flight secondary ion mass spectrometry, and wherein'}an upper limit discharge voltage is 4.35 V or more and not more than 4.80 V.2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the particle includes at least lithium and one or more transition metal elements.3. The non-aqueous electrolyte secondary battery according to claim 2 , wherein the particle includes cobalt (Co) as a principal transition metal element and has a layered structure.4. The non-aqueous electrolyte secondary battery according to claim 3 , wherein one or more elements different from the principal transition metal element care included in at least a part of the surface of the particle.5. The non-aqueous electrolyte secondary battery according to claim 4 , wherein the one or more elements include at least one of nickel (Ni) claim 4 , manganese (Mn) and phosphorus (P).6. The non-aqueous electrolyte secondary battery according to claim 4 , wherein the one or more elements include manganese (Mn) and any one of nickel (Ni) and phosphorus (P).7. The non-aqueous electrolyte secondary battery according to ...

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Номер записи: 52
13-02-2014 дата публикации

POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Номер: US20140045067A1
Автор: Cho Jaephil, CHO Yong Hyun
Принадлежит: UNIST Academy-Industry Research Corporation

Disclosed are a positive active material for a rechargeable lithium battery that includes: a core including a lithium metal composite oxide having a layered structure; and a shell including a lithium metal composite oxide having a layered structure and having a different composition from the core, a lithium metal composite oxide having a spinel structure, or a combination thereof, wherein the shell is positioned on the surface of the core, a method of preparing the same, and a rechargeable lithium battery including the same. 1. A positive active material for a rechargeable lithium battery , comprising:a core comprising a lithium metal composite oxide having a layered structure; anda shell comprising a lithium metal composite oxide having a layered structure and having a different composition from the core, a lithium metal composite oxide having a spinel structure, or a combination thereof,wherein the shell is positioned on the surface of the core.2. The positive active material of claim 1 , wherein the lithium metal composite oxide having a layered structure included in the core is a compound represented by the following Chemical Formula 1 claim 1 ,the lithium metal composite oxide having a layered structure included in the shell is a compound represented by the following Chemical Formula 2, and [{'br': None, 'sub': k1', '1-x1-y1', 'x1', 'y1', 'n1, 'sup': 1', '2', '3, 'LiMMMO\u2003\u2003[Chemical Formula 1]'}, {'br': None, 'sub': k2', '1-x2-y2', 'x2', 'y2', 'n2, 'sup': 1', '2', '3, 'LiMMMO\u2003\u2003[Chemical Formula 2]'}, {'br': None, 'sub': k3', '1-x3-y3', 'x3', 'y3', 'm3', 'n3, 'sup': 1', '2', '3, 'Li[MMM]O\u2003\u2003[Chemical Formula 3]'}], 'the lithium metal composite oxide having a spinel structure included in the shell is a compound represented by the following Chemical Formula 3wherein, in the above Chemical Formulae 1 to 3,{'sup': 1', '3, 'Mto Mare different and are each independently Ni, Co, Mn, Al, Mg, Ba, Ti, V, Zr, Fe, Cu, or Sr,'}0.98≦k1≦1.35, 0≦x1<0 ...

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Номер записи: 53
20-02-2014 дата публикации

NICKEL-ZINC SECONDARY BATTERY AND METHOD FOR PREPARING THE SAME

Номер: US20140050970A1
Автор: Li Ruiling
Принадлежит: GUANGDONG POWERLINK ENERGY CO., LTD

The present invention provides a nickel-zinc secondary battery, including: a battery case; an electrode assembly, disposed in the battery case; and an electrolyte solution, positioned in the battery case, and filled around the electrode assembly, wherein the electrode assembly includes a nickel positive electrode, a zinc negative electrode, and a membrane separator disposed between the nickel positive electrode and the zinc negative electrode; the nickel positive electrode includes: a substrate and positive electrode material coated on the surface of the substrate; the positive electrode material includes: 68 wt %˜69 wt % positive electrode active material, 0.6 wt %˜1 wt % yttrium oxide, 0.2 wt %˜0.6 wt % calcium hydroxide, 3.5 wt %˜4 wt % nickel powder, and a binder in balance; and the positive electrode active material is a spherical nickel hydroxide coated with Co3+. The nickel-zinc secondary battery provided by the present invention can reduce the amount of hydrogen evolved and have good cycling performance while maintaining the battery capacity. The present invention further provides a method for preparing a nickel-zinc secondary battery. 1. A nickel-zinc secondary battery , characterized by comprising:a battery case;an electrode assembly, disposed in the battery case;an electrolyte solution, positioned in the battery case, and filled around the electrode assembly,wherein the electrode assembly comprises a nickel positive electrode, a zinc negative electrode, and a membrane separator disposed between the nickel positive electrode and the zinc negative electrode;{'sup': '3+', 'the nickel positive electrode comprises: a substrate and positive electrode material coated on the surface of the substrate; the positive electrode material comprises: 68 wt %˜69 wt % positive electrode active material, 0.6 wt %˜1 wt % yttrium oxide, 0.2 wt %˜0.6 wt % calcium hydroxide, 3.5 wt %˜4 wt % nickel powder, and a binder in balance; and the positive electrode active material is a ...

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Номер записи: 54
20-02-2014 дата публикации

LITHIUM-ION SECONDARY BATTERY

Номер: US20140050976A1
Автор: Nagai Hiroki
Принадлежит:

A lithium-ion secondary battery includes a positive electrode current collector and a porous positive electrode active material layer retained by the positive electrode current collector . The positive electrode active material layer contains, for example, positive electrode active material particles , an electrically conductive material , and a binder . In this lithium-ion secondary battery , the positive electrode active material particles have a shell portion constituted by a lithium transition metal oxide, a hollow portion formed inside the shell portion , and a through hole penetrating the shell portion . In the lithium-ion secondary battery , in the positive electrode active material layer on average, the hollow portion accounts for 23% or higher of an apparent sectional area of the positive electrode active material particles . In addition, a thickness of the shell portion in the positive electrode active material layer on average is 2.2 μm or less. 1. A lithium-ion secondary battery comprising:a current collector; anda porous positive electrode active material layer which is retained by the current collector and which contains positive electrode active material particles, an electrically conductive material, and a binder, whereinthe positive electrode active material particles have:a shell portion constituted by a lithium transition metal oxide;a hollow portion formed inside the shell portion; anda through hole that penetrates the shell portion,in the positive electrode active material layer on average, the hollow portion accounts for 23% or higher of an apparent sectional area of the positive electrode active material particles, andwhen a thickness of the shell portion at any position on an inner surface of the shell portion on any cross section of the positive electrode active material layer is defined as a shortest distance from the any position on the inner surface of the shell portion to an outer surface of the shell portion, a thickness of the shell ...

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Номер записи: 55
20-02-2014 дата публикации

ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND PREPARATION THEREOF

Номер: US20140050979A1
Автор: Kim Ki-Tae, Kwon Yo-Han, WOO Sang-Wook
Принадлежит: LG CHEM, LTD.

The present invention relates to an anode active material for a lithium secondary battery, comprising a carbon material, and a coating layer formed on the surface of particles of the carbon material and having a plurality of Sn-based domains having an average diameter of 1 μm or less. The inventive anode active material having a Sn-based domains coating layer on the surface of a carbon material can surprisingly prevent stress due to volume expansion which generates by an alloy of Sn and lithium. Also, the inventive method for preparing an anode active material can easily control the thickness of the coating layer. 1. An anode active material for a lithium secondary battery , comprising:a carbon material; anda coating layer formed on the surface of particles of the carbon material and having a plurality of Sn-based domains having an average diameter of 1 μm or less.2. The anode active material for a lithium secondary battery according to claim 1 , wherein the Sn-based domains comprises Sn claim 1 , a Sn alloy or a mixture thereof.3. The anode active material for a lithium secondary battery according to claim 2 , wherein the Sn alloy is an alloy of Sn and a metal selected from the group consisting of Mg claim 2 , Al claim 2 , Ca claim 2 , Ti claim 2 , Cr claim 2 , Mn claim 2 , Fe claim 2 , Co claim 2 , Ni claim 2 , Cu claim 2 , Zn claim 2 , Ga claim 2 , Ge claim 2 , Zr claim 2 , Nb claim 2 , Pd claim 2 , Ag claim 2 , Cd claim 2 , In claim 2 , Sb claim 2 , Pt claim 2 , Au claim 2 , Hg claim 2 , Pb and Bi.4. The anode active material for a lithium secondary battery according to claim 1 , wherein the coating layer has a density of 2.2 to 5.9 g·cm.5. The anode active material for a lithium secondary battery according to claim 1 , wherein the carbon material is selected from the group consisting of natural graphite claim 1 , artificial graphite claim 1 , mesocarbon microbeads (MCMB) claim 1 , carbon fibers claim 1 , carbon black and a mixture thereof.6. The anode active ...

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Номер записи: 56
20-02-2014 дата публикации

NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

Номер: US20140050981A1
Автор: JEONG Hoon, Kang Yoon Ah, Kim Je Young, Kim Ki Hwan, LEE Yong Ju, Lim Jin Hyong
Принадлежит: LG CHEM, LTD.

Provided is a negative electrode active material comprising (a) a core including one or more non-carbon-based materials selected from the group consisting of silicon, nickel, germanium, and titanium, and (b) an organic polymer coating layer formed of a polymer compound having a content of a fluorine component of 50 wt % or more on a surface of the core. 1. A negative electrode active material comprising:(a) a core including one or more non-carbon-based materials selected from the group consisting of silicon, nickel, germanium, and titanium; and(b) an organic polymer coating layer formed on a surface of the core.2. The negative electrode active material of claim 1 , wherein the non-carbon-based material is a single phase of silicon claim 1 , nickel claim 1 , germanium claim 1 , or titanium claim 1 , or an alloy phase thereof.3. The negative electrode active material of claim 1 , wherein the non-carbon-based material is in a form of a nanotube.4. The negative electrode active material of claim 1 , wherein the organic polymer coating layer is formed of a polymer compound having a content of a fluorine component of 50 wt % or more.5. The negative electrode active material of claim 4 , wherein the organic polymer coating layer is formed of a polymer compound having a content of a fluorine component ranging from 50 wt % to 95 wt %.6. The negative electrode active material of claim 4 , wherein the polymer compound is a compound selected from the group consisting of (a) an epoxy compound containing a fluorine component claim 4 , (b) an acrylate-based compound containing a fluorine component claim 4 , and (c) a silane-based compound containing a fluorine component.9. The negative electrode active material of claim 8 , wherein the acrylate-based compound containing a fluorine component is a compound selected from the group consisting of 2 claim 8 ,2 claim 8 ,2-trifluoroethyl methacrylate claim 8 , 2-(perfluorohexyl)ethyl methacrylate claim 8 , 2-(perfluorooctyl)ethyl ...

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Номер записи: 57
27-02-2014 дата публикации

Negative Electrode Material for Lithium Secondary Battery and its Manufacturing Method, and Negative Electrode for Lithium Secondary Battery, and Lithium Secondary Battery

Номер: US20140054492A1
Автор: Ikeda Kouichiro, MUKAI Takashi, Sakai Tetsuo, Sakamoto Taichi, Tani Kumihiko, YAMASHITA Naoto
Принадлежит: ISUZU GLASS CO. LTD

[Object] The object is to provide a negative electrode material for a lithium secondary battery, wherein a sulfide-based negative electrode with water-resistant properties can exert excellent cycle characteristics and high output performance while maintaining a high discharge capacity and there is no precipitation of lithium dendrites during charge at low temperature. 1. A negative electrode material for a lithium secondary battery comprising sulfide glass , including sulfur and the following components (i) and (ii):(i) at least one or more elements selected from a group consisting of Sb, As, Bi, Ge, Si, Cu, Zn, Pd, In and Zr; and(ii) at least one or more elements selected from a group consisting of Se, Te, Ga, Sn, Pb, Cd, Al, Fe, Mg, Ca, Co, Ag, Sr, P and Ba,wherein the ratio in said sulfide glass is sulfur: 40-80 mol %, (i): 1-50 mol % and (ii) 1-50 mol %, respectively.2. The negative electrode material for a lithium secondary battery according to claim 1 , wherein said component (i) comprises at least one or more elements selected from a group consisting of Sb claim 1 , Bi claim 1 , Ge claim 1 , Cu and Zn; andsaid component (ii) consists of Sn.3. The negative electrode material for a lithium secondary battery according to claim 1 , wherein said component (i) consists of Ge; andsaid component (ii) comprises at least one or more elements selected from a group consisting of Te, Ga, Sn, Al, Mg, Ca, Sr, P and Ba.4. The negative electrode material for a lithium secondary battery according to claim 1 , wherein said sulfide glass includes 0.5-40 mol % of Ge.5. A negative electrode material for a lithium secondary battery comprising a composite powder of component A and component B claim 1 ,wherein (1) said component A is a material capable of electrochemically absorbing and releasing lithium; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(2) said component B is the sulfide glass according to .'}6. The negative electrode material for a lithium secondary battery ...

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Номер записи: 58
27-02-2014 дата публикации

Lithium battery having a protected lithium electrode and an ionic liquid catholyte

Номер: US20140057153A1
Автор: De Jonghe Lutgard C., Katz Bruce D., Nimon Yevgeniy S., Visco Steven J.
Принадлежит:

Active metal and active metal intercalation electrode structures and battery cells having ionically conductive protective architecture including an active metal (e.g., lithium) conductive impervious layer separated from the electrode (anode) by a porous separator impregnated with a non-aqueous electrolyte (anolyte). This protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the impervious layer, which may include aqueous or non-aqueous liquid electrolytes (catholytes) and/or a variety of electrochemically active materials, including liquid, solid and gaseous oxidizers. Safety additives and designs that facilitate manufacture are also provided. 1. An electrochemical cell structure , comprising:a cathode structure comprising a catholyte, the catholyte comprising an ionic liquid; and an anode comprising a material selected from the group consisting of an active metal, active metal ion, active metal alloy, active metal alloying metal or active metal intercalating material, and', 'an ionically conductive protective architecture on a first surface of the anode, the architecture comprising a substantially impervious ionically conductive layer that protects the anode from contact with catholyte., 'a protected anode structure comprising,'}2. The electrochemical cell of wherein the ionic liquid has a melting point below 100° C.3. The electrochemical cell of wherein the ionic liquid is selected from the group consisting of imidazolium derivatives claim 1 , pyridinium derivatives claim 1 , phosphonium compounds claim 1 , and tetralkylammonium compounds.4. The electrochemical cell of wherein the ionic liquid is selected from the group consisting of 1-Ethyl-3-methylimidazolium tosylate (EMIM-Ts) claim 1 , 1-Butyl-3-methylimidazolium octyl sulfate (BMIM-OctSO) claim 1 , 1-Ethyl-3-methylimidazolium hexafluorophosphate claim 1 , and 1-Hexyl-3-methylimidazolium tetrafluoroborate.5. The electrochemical cell of ...

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Номер записи: 59
27-02-2014 дата публикации

COMPOSITE ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM BATTERY INCLUDING THE COMPOSITE ANODE ACTIVE MATERIAL

Номер: US20140057173A1
Автор: Jeong Joa-Young, KIM Jong-uk, Lee Gwang-Jin, Ryu Ji-Heon
Принадлежит: Samsung SDI Co., Ltd.

In an aspect, a composite anode active material including a lithium titanium oxide; and phosphates, a method of preparing the composite anode active material, and a lithium battery including the composite anode active material is provided. 1. A composite anode active material comprising: lithium titanium oxide particles; and a phosphate layer on a surface of the lithium titanium oxide particles.2. The composite anode active material of claim 1 , further comprising phosphate particles between adjacent lithium titanium oxide particles.3. The composite anode active material of claim 1 , wherein the phosphate layer includes LiPO.4. The composite anode active material of claim 1 , wherein the lithium titanium oxide particles have a spinel structure.5. The composite anode active material of claim 1 , wherein the lithium titanium oxide is represented by Formula 1 below:{'br': None, 'sub': 4+x', '5-y', 'z', '12-n, 'LiTiMO\u2003\u2003Formula 1'}wherein, in Formula 1, −0.2≦x≦0.2; −0.3≦y≦0.3; 0≦z≦0.3; −0.3≦n≦0.3; andM is selected from the group consisting of lithium (Li), magnesium (Mg), aluminum (Al), calcium (Ca), strontium (Sr), chromium (Cr), vanadium (V), iron (Fe), cobalt (Co), nickel (Ni), zirconium (Zr), zinc (Zn), silicon (Si), yttrium (Y), niobium (Nb), gallium (Ga), tin (Sn), molybdenum (Mo), tungsten (W), barium (Ba), lanthanum (La), cerium (Ce), silver (Ag), tantalum (Ta), hafnium (Hf), ruthenium (Ru), bismuth (Bi), antimony (Sb), and arsenic (As).6. The composite anode active material of claim 1 , wherein the lithium titanium oxide particles are primary particles having an average particle diameter of from about 10 nm to about 1000 nm.7. The composite anode active material of claim 1 , wherein the phosphate layer is a coating layer including phosphate oxide.8. The composite anode active material of claim 7 , wherein the coating layer has a thickness of from about 0.1 nm to about 20 nm.9. The composite anode active material of claim 1 , wherein the composite anode ...

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Номер записи: 60
27-02-2014 дата публикации

CATHODE ACTIVE MATERIALS FOR LITHIUM SECONDARY BATTERY AND PREPARATION METHOD THEREOF

Номер: US20140057175A1
Автор: CHANG Won Young, CHO Byung Won, CHO Jae Hyung, CHUNG Kyung Yoon, KIM Soo, Kim Sujin, NOH Jae-kyo
Принадлежит: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Provided is a cathode active material for a lithium secondary battery and a method for preparing the same. The cathode active material for a lithium secondary battery allows a lithium secondary battery to realize high capacity and to maintain maximum capacity even at high voltage, prevents a drop in capacity during repeated charge/discharge cycles, and improves the lifespan of a lithium secondary battery. 1. A cathode active material for a lithium secondary battery , comprising LiXOcoated with LiMnO , wherein X is at least one metal selected from the group consisting of nickel (Ni) , cobalt (Co) , manganese (Mn) , aluminum (Al) , copper (Cu) , iron (Fe) , magnesium (Mg) , bismuth (Bi) and gallium (Ga).2. The cathode active material for a lithium secondary battery according to claim 1 , wherein LiXOis at least one selected from the group consisting of LiCoO claim 1 , LiNiO claim 1 , LiNixCoO(wherein 0 Подробнее

Номер записи: 61
27-02-2014 дата публикации

SILICON-BASED NEGATIVE ACTIVE MATERIAL, PREPARING METHOD OF PREPARING SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

Номер: US20140057176A1
Автор: Heo Ung-Kuk, Hwang Duck-Chul, KIM Tae-Geun, Kim Young-Hwan, KIM Young-Min, Kim Young-Ugk, Lee Deuk-Hwa, LEE Sang-min, LEE Young-Jun, NA Seung-Ho, Park Sang-Eun
Принадлежит: Samsung SDI Co., Ltd.

A silicon-based negative active material that includes a core including silicon oxide represented by SiO(0 Подробнее

Номер записи: 62
27-02-2014 дата публикации

SCAFFOLDING MATRIX WITH INTERNAL NANOPARTICLES

Номер: US20140057179A1
Автор: Berdichevsky Eugene Michael, Gomes George Pius, Hantsoo Eerik Torm, Jacobs Alexander Thomas, Luzinov Igor, Shelton Addison Newcomb, Yushin Gleb Nikolayevich, Zdyrko Bogdan
Принадлежит: Sila Nanotechnologies Inc.

A battery electrode composition is provided comprising composite particles, with each composite particle comprising active material and a scaffolding matrix. The active material is provided to store and release ions during battery operation. For certain active materials of interest, the storing and releasing of the ions causes a substantial change in volume of the active material. The scaffolding matrix is provided as a porous, electrically-conductive scaffolding matrix within which the active material is disposed. In this way, the scaffolding matrix structurally supports the active material, electrically interconnects the active material, and accommodates the changes in volume of the active material. 1. A battery electrode composition comprising composite particles , each composite particle comprising:active material provided to store and release ions during battery operation, whereby the storing and releasing of the ions causes a substantial change in volume of the active material; anda porous, electrically-conductive scaffolding matrix within which the active material is disposed, wherein the scaffolding matrix structurally supports the active material, electrically interconnects the active material, and accommodates the changes in volume of the active material.2. The battery electrode composition of claim 1 , each composite particle further comprising a shell at least partially encasing the active material and the scaffolding matrix claim 1 , the shell being substantially permeable to the ions stored and released by the active material.3. The battery electrode composition of claim 2 , wherein the shell comprises a protective layer formed from a material that is substantially impermeable to electrolyte solvent molecules.4. The battery electrode composition of claim 2 , wherein the shell comprises an active material layer claim 2 , and wherein the active material disposed within the scaffolding matrix is formed from a first active material and the active material ...

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Номер записи: 63
06-03-2014 дата публикации

SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, BATTERY PACK, AND ELECTRIC VEHICLE

Номер: US20140065450A1
Автор: Iwama Masayuki, Kawase Kenichi, SENOUE Masaharu
Принадлежит: SONY CORPORATION

A secondary battery includes: a cathode; an anode; and an electrolytic solution, wherein the anode includes an anode active material layer, the anode active material layer being provided on part of an anode current collector, and a breaking elongation δ2 (percent) of the anode current collector in a second region is larger than a breaking elongation δ1 (percent) of the anode current collector in a first region, the second region not being provided with the anode active material layer, and the first region being provided with the anode active material layer. 1. A secondary battery comprising:a cathode;an anode; andan electrolytic solution, whereinthe anode includes an anode active material layer, the anode active material layer being provided on part of an anode current collector, anda breaking elongation δ2 (percent) of the anode current collector in a second region is larger than a breaking elongation δ1 (percent) of the anode current collector in a first region, the second region not being provided with the anode active material layer, and the first region being provided with the anode active material layer.2. The secondary battery according to claim 1 , wherein a crystal particle diameter D2 (micrometers) of the anode current collector in the second region is larger than a crystal particle diameter D1 (micrometers) of the anode current collector in the first region.3. The secondary battery according to claim 1 , whereinthe anode current collector is spirally wound, andthe anode active material layer is not provided in at least part of an outermost circumference of the anode current collector.4. The secondary battery according to claim 1 , wherein the anode current collector includes copper (Cu) as a constituent element.5. The secondary battery according to claim 1 , whereinthe anode active material layer includes an anode active material, andthe anode active material includes one or more of silicon (Si), tin (Sn), and germanium (Ge) as constituent elements.6. The ...

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Номер записи: 64
06-03-2014 дата публикации

NONAQUEOUS ELECTROLYTE BATTERY

Номер: US20140065469A1
Автор: INAGAKI Hiroki, Takami Norio
Принадлежит: KABUSHIKI KAISHA TOSHIBA

A nonaqueous electrolyte battery includes a positive electrode containing an active material, a negative electrode, and a nonaqueous electrolyte, the negative electrode including a current collector and a negative electrode active material supported by the current collector, the negative electrode active material having a Li insertion potential not lower than 0.2V (vs. Li/Li) and an average primary particle diameter not larger than 1 μm, and a specific surface area of the negative electrode, excluding a weight of the current collector, as determined by the BET method falls within a range of 3 to 50 m/g. 1. A nonaqueous electrolyte battery comprising:a metallic container;a positive electrode provided in the metallic container and comprising an active material;{'sup': +', '2, 'sub': '2', 'a negative electrode provided in the metallic container and comprising a current collector and a negative electrode active material supported by the current collector, the negative electrode active material having a Li insertion potential not lower than 0.2V (vs. Li/Li) and an average primary particle diameter not larger than 1 μm, a specific surface area of the negative electrode, as determined by the BET method utilizing a Nadsorption and excluding a weight of the current collector, falls within a range of 3 to 50 m/g; and'}a nonaqueous electrolyte provided in the metallic container.2. The nonaqueous electrolyte battery according to claim 1 , wherein a porosity of the negative electrode excluding the current collector falls within a range of 20 to 50%.3. The nonaqueous electrolyte battery according to claim 1 , wherein the Li insertion potential of the negative electrode active material is 0.2 to 3V (vs. Li/Li).4. The nonaqueous electrolyte battery according to claim 1 , wherein the average primary particle diameter of the negative electrode active material is 0.001 to 1 μm.5. The nonaqueous electrolyte battery according to claim 1 , wherein the specific surface area of the ...

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Номер записи: 65
06-03-2014 дата публикации

LITHIUM SECONDARY BATTERY

Номер: US20140065484A1
Автор: Yoshida Jun
Принадлежит:

An object of the present invention is to provide a lithium secondary battery that has a lithium nickel phosphate compound in the positive electrode, is free of collapse of the crystal structure even at high potentials and is resistant to cycle deterioration. The lithium secondary battery according to the present invention has a positive electrode active material. This positive electrode active material contains a lithium nickel phosphate compound that is represented by the general formula LiNiMnPO(wherein 0 Подробнее

Номер записи: 66
13-03-2014 дата публикации

POSITIVE-ELECTRODE ACTIVE MATERIAL PARTICLE FOR ALL-SOLID BATTERY AND METHOD FOR PRODUCTION THEREOF

Номер: US20140072875A1
Автор: Uchiyama Takayuki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A positive-electrode active material particle for an all-solid battery which includes a sulfide-based solid electrolyte includes an active material core and a reaction-inhibiting layer which contains carbon and with which the active material core is coated. 1. A positive-electrode active material particle for an all-solid battery which includes a sulfide-based solid electrolyte , comprising:an active material core; anda reaction-inhibiting layer which contains carbon in a form of simple substance and with which the active material core is coated, the reaction-inhibiting layer having a thickness of 1 to 100 nm.2. The positive electrode active material particle according to claim 1 ,wherein the reaction inhibiting layer is holohyaline.3. The positive electrode active material particle according to claim 2 ,wherein the reaction inhibiting layer includes one of a lithium conducting oxide and a composite oxide.4. A production method for positive-electrode active material particles for an all-solid battery which includes a sulfide-based solid electrolyte claim 2 , the production method comprising:preparing precursors of reaction-inhibiting layers that each contain a carbon source and that inhibit a reaction between the sulfide-based solid electrolyte and active material cores;coating the active material cores with the precursors of the reaction-inhibiting layers; andperforming a heat treatment on the active material cores, which have been respectively coated with the precursors of the reaction-inhibiting layers, in an atmosphere with an oxygen concentration of 50 vol % or higher.5. The production method according to claim 4 ,wherein the precursors of the reaction-inhibiting layers are prepared by mixing an organic acid lithium salt and a solution that forms a glass network.6. The production method according to claim 4 ,wherein the precursors of the reaction-inhibiting layers are prepared by mixing boric acid, tetraethoxysilane and an alcohol to prepare a solution in which ...

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Номер записи: 67
20-03-2014 дата публикации

METHOD FOR PRODUCING ELECTRODE ACTIVE MATERIAL AND ELECTRODE ACTIVE MATERIAL

Номер: US20140079873A1
Автор: Miki Nariaki, Suzuki Tomoya, Uchiyama Takayuki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The present invention is to provide an electrode active material and a method for producing the same capable of preventing production of foreign substance, poor coating and deterioration of electrode active material upon covering the surface of the electrode active material with ion conductive oxide, decreasing battery resistance and having higher output of battery. Disclosed is a method for producing an electrode active material, the surface of which is covered with ion conductive oxide, comprising the steps of: preparing an alkoxide solution by mixing at least alkoxide compound and liquid water; and applying and drying the alkoxide solution on a surface of an electrode active material under dry atmosphere, and an electrode active material, the surface of which is covered with ion conductive oxide, wherein an area on the surface of the electrode active material occupied by a substance other than the ion conductive oxide is 21% or less. 1. A method for producing an electrode active material , a surface of which is covered with an ion conductive oxide , comprising the steps of:a preparation step including preparing an alkoxide solution by mixing at least an alkoxide compound and liquid water; anda coating step including applying and drying the alkoxide solution on the surface of the electrode active material under a dry atmosphere,wherein the ion conductive oxide is lithium niobate, and the following (1) or (2) is performed in the preparation step including preparing the alkoxide solution:(1) mixing an alcohol aqueous solution containing an alcohol and the liquid water with a lithium alkoxide and a niobium alkoxide, or(2) after mixing the liquid water with a lithium alkoxide alcohol solution containing a lithium alkoxide and an alcohol, mixing a niobium alkoxide therewith.2. The method for production according to claim 1 , wherein the dry atmosphere in the coating step has a dew-point temperature of −30° C. or less.3. (canceled)4. (canceled)5. The method for ...

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Номер записи: 68
20-03-2014 дата публикации

LITHIUM BATTERY

Номер: US20140079991A1
Автор: Cho Yu-Jeong, Do Ui-Song, Kim Jae-Myung, Lee So-Ra, Lee Su-Kyung, Park Sang-Eun, Shin Chang-Su
Принадлежит: Samsung SDI Co., Ltd.

Provided is a lithium battery including: a positive electrode, a negative electrode, and an organic electrolytic solution, wherein the negative electrode has a metal/metalloid nanostructure, and the organic electrolytic solution includes a lithium sulfonimide-based compound. 1. A lithium battery comprising:a positive electrode; a negative electrode; and an organic electrolytic solution, whereinthe negative electrode comprises a negative active material comprising a metal/metalloid nanostructure, andthe organic electrolytic solution comprises a lithium sulfonimide-based compound.2. The lithium battery of claim 1 , wherein the metal/metalloid nanostructure has at least one type of a structure selected from a nanowire claim 1 , a nanotube claim 1 , a nanobelt claim 1 , and a nanorod.3. The lithium battery of claim 1 , wherein the metal/metalloid nanostructure is a nanowire.4. The lithium battery of claim 1 , wherein the metal/metalloid nanostructure comprises at least one element selected from a Group 13 element claim 1 , a Group 14 element claim 1 , and a Group 15 element.5. The lithium battery of claim 1 , wherein the metal/metalloid nanostructure comprises at least one element selected from Si claim 1 , Ge and Sn.6. The lithium battery of claim 1 , wherein the nanostructure is a Si nanowire.7. The lithium battery of claim 1 , wherein the negative active material comprises a composite comprising a metal/metalloid nanostructure and a carbonaceous material.8. The lithium battery of claim 7 , wherein the composite comprises:the carbonaceous material; andthe metal/metalloid nanostructure disposed on the carbonaceous material.9. The lithium battery of claim 8 , wherein the nanostructure is a nanowire.10. The lithium battery of claim 8 , wherein the carbonaceous substrate is spherical or tabular.11. The lithium battery of claim 8 , wherein the spherical carbonaceous material has a circularity of about 0.7 to about 1.0.12. The lithium battery of claim 8 , wherein the ...

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Номер записи: 69
20-03-2014 дата публикации

COMPOSITE PARTICLES FOR LITHIUM SECONDARY BATTERY POSITIVE ELECTRODES, METHOD FOR PRODUCING COMPOSITE PARTICLES FOR LITHIUM SECONDARY BATTERY POSITIVE ELECTRODES, METHOD FOR PRODUCING POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES, AND LITHIUM SECONDARY BATTERY

Номер: US20140079995A1
Автор: Wakada Tsutomu
Принадлежит: ZEON CORPORATION

A composite particle for a lithium secondary battery positive electrode including 1. A method for producing a positive electrode for a lithium secondary battery , the method comprising: forming a layer of a positive electrode slurry composition containing coated active material particles , a binder , and an aqueous medium on a current collector made of aluminum or an aluminum alloy; and drying the layer of the positive electrode slurry composition , wherein{'sup': 3', '1/2', '3', '1/2, 'the coated active material particle includes: a particle of a positive electrode active material containing nickel; and a layer of a polymer that coats a surface of the particle of the positive electrode active material and has an SP value of 8 (cal/cm)to 13 (cal/cm).'}2. The method for producing a positive electrode for a lithium secondary battery according to claim 1 , wherein: the polymer includes an acidic functional group; andan acid value of the polymer is 50 mg KOH/g or less.3. The method for producing a positive electrode for a lithium secondary battery according to claim 1 , wherein the coated active material particles are obtained by: fluidizing the particles of the positive electrode active material; and spraying a liquid composition containing the polymer and an aqueous medium onto the fluidized particles of the positive electrode active material.4. The method for producing a positive electrode for a lithium secondary battery according to claim 1 , wherein the coated active material particles are obtained by spraying a liquid composition containing the particles of the positive electrode active material claim 1 , the polymer claim 1 , and an aqueous medium.5. The method for producing a positive electrode for a lithium secondary battery according to claim 1 , wherein the coated active material particles are obtained by: precipitating the polymer on the surface of the particles of the positive electrode active material in a liquid composition containing the particles of the ...

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Номер записи: 70
20-03-2014 дата публикации

ANODES OF LI-ION BATTERIES

Номер: US20140079997A1
Автор: Chazalviel Jean-Noël, Cheriet Abdelhak, Gabouze Noureddine, Ozanam François, Rosso Michel, Solomon Ionel, Touhir Larbi
Принадлежит: Centre De Recherche En Technologie Des DZ Dz Semi-Conducteurs Pour L'Energet

The use of a methylated amorphous silicon alloy as the active material in an anode of Li-ion battery is described. Lithium storage batteries and anodes manufactured using the material, as well as a method for manufacturing the electrodes by low-power PECVD are also described. 12.-. (canceled)3. An electrode comprising at least one substrate made of a conductive material in which the lithium ions cannot be inserted or only scarcely , on which is deposited a coating including at least one material based on methylated amorphous silicon.4. The electrode according to claim 3 , wherein the methylated amorphous silicon has the chemical formula (II):{'br': None, 'i': a', 'x≦', 'y≦x, 'sub': 1-x', '3', 'x-y', '2', 'y, '-Si(CH)(CH):H with 0<0.4 and \u2003\u2003(II)'}5. The electrode according to claim 4 , wherein the methylated amorphous silicon has the chemical formula (I):{'br': None, 'i': a', 'x, 'sub': 1-x', '3', 'x, '-Si(CH):H with 0<≦0.4\u2003\u2003(I)'}6. The electrode according to claim 3 , wherein the material based on methylated amorphous silicon comprises 50 to 100% of methylated amorphous silicon in mass fraction.7. The electrode according to claim 3 , wherein the coating based on methylated amorphous silicon is in the form of a continuous thin layer.8. The electrode according to claim 3 , wherein the substrate comprises at least one layer based on a metal or an alloy of metals chosen among: copper claim 3 , nickel claim 3 , iron claim 3 , stainless steel (SS) claim 3 , molybdenum or tungsten.9. The electrode according to claim 8 , wherein the material based on methylated amorphous silicon is deposited directly on the layer based on a metal or an alloy of metals claim 8 , in particular on a metallic film.10. The electrode according to claim 3 , wherein the substrate has a specific surface area higher than its geometric surface area.11. The electrode according to claim 3 , wherein the methylated amorphous silicon is doped by inclusion of atoms chosen among atoms of ...

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Номер записи: 71
20-03-2014 дата публикации

CATHODE MATERIAL

Номер: US20140079999A1
Автор: Aoyagi Shintaro, ISOGAI Yuji, Omichi Kaoru
Принадлежит: HONDA MOTOR CO., LTD.

The present invention provides a cathode material that can achieve a high energy density and excellent instantaneous output characteristics in lithium ion secondary batteries. The cathode material is used in a lithium ion secondary battery and contains FeFand carbon-coated LiFePOas cathode active materials. 1. A cathode material used in a lithium ion secondary battery , the cathode material comprising FeFand carbon-coated LiFePOas cathode active materials.2. The cathode material according to claim 1 , wherein the mass ratio of FeFto carbon-coated LiFePOis in a range of 86:14 to 57:43.3. The cathode material according to claim 1 , further comprising a conductive auxiliary.4. The cathode material according to claim 3 , wherein the cathode material comprises:{'sub': '3', 'FeFin a range of 40 to 60% by mass;'}{'sub': '4', 'carbon-coated LiFePOin a range of 10 to 30% by mass; and'}the conductive auxiliary in a range of 20 to 30% by mass, andwherein a total thereof is 100% by mass. 1. Field of the InventionThe present invention relates to a cathode material.2. Description of the Related ArtIt is desired that secondary batteries for electric vehicles have a high energy density to increase driving distance and also have excellent output characteristics when the current density instantaneously changes during high speed running or hill-climbing (hereinbelow, sometimes referred to as instantaneous output characteristics).Heretofore, nickel-hydrogen secondary batteries comprising two active materials different in charge and discharge characteristics, that is, a high-output type cathode active material and a low-output type cathode active material have been known as secondary batteries having high energy density and excellent instantaneous output characteristics. The nickel-hydrogen secondary batteries have nickel hydroxide as a cathode active material, and comprise a high-output type cathode active material and a low-output type cathode active material that have different ...

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Номер записи: 72
27-03-2014 дата публикации

CATHODE MATERIAL AND LITHIUM ION BATTERY THEREFROM

Номер: US20140087257A1
Автор: Dhawan Sundeep Kumar, Gopukumar Sukumaran, Maheshwari Priyanka Heda, Mathur Rakesh Behari, Nithya Chandrasekaran, Sivashanmugam Arumugam, Thirunakaran Ramasamy
Принадлежит: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

A new high performing lithium ion cell having new carbon based anode and new dual doped layered cathode materials. The anode is a self standing carbon fibrous material and the cathode is a dual doped Lithium cobalt oxide of general formula LiMNCoO(0.01≦x, y≦0.2) wherein M is a divalent alkaline earth metal cation and N is a divalent transition metal cation. Lithium ion cells of 2016 coin cells were assembled using the above materials deliver specific capacity of 60-85 mAhgat 1 C rate and exhibit excellent cycling stability of 90-95% even after 200 cycles when cycled between 2.9-4.1V. 1. A high voltage , high performance layered cathode material of dual doped Lithium cobalt oxide of the formula LiMNCoOwherein x and y are positive values (0.01≦x , y≦0.2) , M and N are dopants and M is divalent alkaline earth metal cation and N is divalent transition metal cation.2. A high voltage claim 1 , high performance layered cathode material as claimed in claim 1 , wherein divalent alkaline earth metal cation used is magnesium and divalent transition metal cation used is copper.3. A high voltage claim 1 , high performance layered cathode material as claimed in claim 1 , wherein said dopants provides high conductivity claim 1 , high discharge capacity claim 1 , structural stability and cycling stability at high voltage up to 4.6V.4. A high voltage claim 1 , high performance layered cathode material as claimed in claim 1 , wherein said cathode material shows high discharge capacity in the range of 160 to 230 mAh/g at 0.2 C rate up to 50 cycles.5. A high voltage claim 1 , high performance layered cathode material as claimed in claim 1 , wherein said cathode material showing capacity retention percentage is in the range of 84.7 to 95.2% at high rates up to 50 cycles.6. A high voltage claim 1 , high performance layered cathode material as claimed in claim 1 , wherein said cathode material exhibit high voltage performance up to 4.6V and low capacity fade up to 0.20 to 0.25 mAhgcycle.7 ...

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Номер записи: 73
27-03-2014 дата публикации

CATHODE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND METHOD OF PRODUCING SAID CATHODE MATERIAL

Номер: US20140087258A1
Автор: KABE Isao, ORIJI Gaku, Tonegawa Akihisa
Принадлежит: SHOWA DENKO K.K.

A cathode material for a lithium secondary battery, including fibrous carbon and a plurality of cathode active material particles bonded to a surface of the fibrous carbon. The cathode active material particles are composed of olivine-type LiMPOwhere M represents one or more kinds of elements selected from Fe, Mn, Ni, and Co. Also disclosed is a method of producing the cathode material and a lithium secondary battery. 1. A cathode material for a lithium secondary battery , comprising:a fibrous carbon; and{'sub': '4', 'a plurality of cathode active material particles composed of olivine-type LiMPO, wherein M represents one or more kinds of elements selected from Fe, Mn, Ni, and Co,'}wherein the cathode active material particles are bonded to a surface of the fibrous carbon.2. The cathode material for a lithium secondary battery according to claim 1 ,wherein a surface except a bonding surface with the fibrous carbon in a surface of the cathode active material particles, is coated with carbon.3. The cathode material for a lithium secondary battery according to claim 1 ,wherein one or more kinds of metals selected from Co, Ti, V, Cr, Mn, W, Mo, Fe, Cu, Al, V, Nb, and Ta, or one or more kinds of oxides of the metals are carried on the surface of the fibrous carbon, and the cathode active material particles are bonded to the surface at a position at which the metals or metal oxides are carried.4. The cathode material for a lithium secondary battery according to claim 1 ,wherein the amount of the fibrous carbon is in a range of 0.5% by mass to 10% by mass in the cathode material.5. The cathode material for a lithium secondary battery according to claim 1 ,wherein an average fiber length of the fibrous carbon is in a range of 1 μm to 100 μm.6. The cathode material for a lithium secondary battery according to claim 5 ,wherein an aspect ratio (fiber length/fiber diameter), which is a ratio of a fiber length to a fiber diameter of the fibrous carbon, is in a range of 5 to 1000 ...

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Номер записи: 74
27-03-2014 дата публикации

CATHODE COMPOSITE MATERIAL AND LITHIUM ION BATTERY USING THE SAME

Номер: US20140087259A1
Автор: LI YA-DONG, LIU XIANG-WEN, Lu Jun, PENG QING
Принадлежит:

A cathode composite material includes a cathode active material and a coating layer coated on a surface of the cathode active material. The cathode active material includes a spinel type lithium nickel manganese oxide. The coating layer includes a lithium metal oxide having a crystal structure belonging to C2/c space group of the monoclinic crystal system. The present disclosure also relates to a lithium ion battery including the cathode composite material. 1. A cathode composite material comprising a cathode active material and a coating layer coated on a surface of the cathode active material , the cathode active material comprises a spinel type lithium nickel manganese oxide , the coating layer comprises a lithium metal oxide having a crystal structure that belongs to C2/c space group of the monoclinic crystal system.2. The cathode composite material of claim 1 , wherein a general formula of the lithium metal oxide is [LiM□][LiMNA□]O claim 1 , wherein A represents a metal element having a +4 valence claim 1 , M and N respectively represent doping chemical elements claim 1 , “□” represents an atom vacancy occupying a Li site of [Li][LiA]O claim 1 , 0≦2a<1 claim 1 , 0≦2b+c<1/3 claim 1 , and 0≦2c<2/3.3. The cathode composite material of claim 2 , wherein A is selected from the group consisting of Ti claim 2 , Sn claim 2 , Mn claim 2 , Pb claim 2 , Te claim 2 , Ru claim 2 , Hf claim 2 , Zr claim 2 , and any combination thereof.4. The cathode composite material of claim 2 , wherein the M and N are respectively selected from the group consisting of alkali metal elements claim 2 , alkaline-earth metal elements claim 2 , Group-13 elements claim 2 , Group-14 elements claim 2 , transition metal elements claim 2 , rare-earth elements claim 2 , and any combination thereof.5. The cathode composite material of claim 4 , wherein M and N are respectively selected from the group consisting of Co claim 4 , Mn claim 4 , Ni claim 4 , Cr claim 4 , V claim 4 , Ti claim 4 , Sn claim 4 ...

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Номер записи: 75
27-03-2014 дата публикации

CARBON-SILICON COMPOSITE, METHOD OF PREPARING THE SAME, AND ANODE ACTIVE MATERIAL INCLUDING THE CARBON-SILICON COMPOSITE

Номер: US20140087268A1
Автор: Kim Hyun Wook, Kim Ki Tae
Принадлежит: LG CHEM, LTD.

Provided are a carbon-silicon composite having improved capacity and cycle stability, and a method of preparing the same. More particularly, the present invention relates to a carbon-silicon composite, in which surfaces of silicon particles are coated with a carbon-based material that is doped with at least one type of doping atoms selected from the group consisting of nitrogen (N), phosphorous (P), boron (B), sodium (Na), and aluminum (Al), and a method of preparing the same. 1. A carbon-silicon composite , in which surfaces of silicon particles are coated with a carbon-based material that is doped with at least one type of doping atoms selected from the group consisting of nitrogen (N) , phosphorous (P) , boron (B) , sodium (Na) , and aluminum (Al).2. The carbon-silicon composite of claim 1 , wherein the doping atoms are substituted or inserted into defects of the carbon-based material.3. The carbon-silicon composite of claim 1 , wherein the doping atoms are included in an amount ranging from 3% to 8% based on carbon atoms of the carbon-based material.4. The carbon-silicon composite of claim 1 , wherein a thickness of the carbon-based material coated on the surfaces of the silicon particles is in a range of 1 nm to 5 nm.5. The carbon-silicon composite of claim 1 , wherein the carbon-based material is any one selected from the group consisting of graphene nanoribbons claim 1 , carbon nanotubes claim 1 , and reduced graphene oxide claim 1 , or a mixture of two or more thereof.6. The carbon-silicon composite of claim 1 , wherein the carbon-based material is included in an amount ranging from 5 wt % to 10 wt % of the silicon particles.7. A method of preparing the carbon-silicon composite of claim 1 , the method comprising:adding a carbon-based material, silicon particles, and a reducing agent to a solution; andheat treating a mixture obtained by the addition.8. The method of claim 7 , wherein the carbon-based material is positively charged and the silicon particles ...

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Номер записи: 76
03-04-2014 дата публикации

Carbon Nanotube-Based Electrode and Rechargeable Battery

Номер: US20140093769A1
Автор: Busnaina Ahmed, Shah Ankita, SOMU Sivasubramanian
Принадлежит: NORTHEASTERN UNIVERSITY

Carbon nanotube-based electrode materials for rechargeable batteries have a vastly increased power density and charging rate compared to conventional lithium ion batteries. The electrodes are based on a carbon nanotube scaffold that is coated with a thin layer of electrochemically active material in the form of nanoparticles. Alternating layers of carbon nanotubes and electrochemically active nanoparticles further increases the power density of the batteries. Rechargeable batteries made with the electrodes have a 100 to 10000 times increased power density compared to conventional lithium-ion rechargeable batteries and a charging rate increased by up to 100 times. 1. An electrode for a rechargeable battery , the electrode comprising:an electrically conductive substrate; anda first active material assembly layer deposited on the substrate, wherein the active material assembly layer comprises a layer of carbon nanotubes and a layer of electrochemically active nanoparticles deposited on a first side of the nanotube layer, and wherein a second side of the nanotube layer is in electrical contact with the substrate.2. The electrode of claim 1 , further comprising one or more additional active material assembly layers deposited on the first active material assembly layer.3. The electrode of claim 2 , wherein at least 2 active material assembly layers are arranged in parallel layers covering the surface of the substrate.4. The electrode of claim 2 , wherein at least 7 active material assembly layers are arranged in parallel layers covering the surface of the substrate.5. The electrode of claim 2 , wherein the carbon nanotube layer of each active material assembly layer forms an electrical contact with the carbon nanotube layers of adjacent active material assembly layers.6. The electrode of claim 1 , wherein the nanoparticles are disposed as a monolayer covering the layer of carbon nanotubes.7. The electrode of claim 6 , wherein at least about 50% of the exposed surface area ...

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Номер записи: 77
03-04-2014 дата публикации

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Номер: US20140093780A1
Автор: AOKI Toshiyuki, TABUCHI Toru, Teshima Minoru
Принадлежит: GS Yuasa International Ltd.

The present invention provides a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode having a negative active material, and a non-aqueous electrolyte, characterized in that the negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B), the silicon-containing particle (A) has a content of carbon, and when measured at a temperature rising rate of 10±2° C./min by thermogravimetry, said composite particle (C) exhibits two stages of weight loss in the range of 30 to 1000° C. 1. A non-aqueous electrolyte secondary battery comprising:a positive electrode;a negative electrode having a negative active material; anda non-aqueous electrolyte;characterized in thatsaid negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B),said silicon-containing particle (A) has a content of carbon, andwhen measured at a temperature rising rate of 10±2° C./min by thermogravimetry, said composite particle (C) exhibits two stages of weight loss in the range of 30 to 1000° C.2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein weight loss starts in thermogravimetry of the composite particle (C) at a temperature of not higher than 600° C. at the first stage and at a temperature of higher than 600° C. at the second stage.3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the proportion of weight loss to the weight prior to the temperature rise in thermogravimetry of the composite particle (C) is within a range of 3 to 30 wt. % at the first stage and 5 to 65 wt. % at the second stage.4. The non-aqueous electrolyte secondary battery according to claim 2 , wherein the proportion of weight loss to the weight prior to the temperature rise in thermogravimetry of the composite particle (C) is within a range of 3 to 30 wt. % at the first stage and ...

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Номер записи: 78
10-04-2014 дата публикации

METHOD FOR MANUFACTURING CARBON-SULFUR COMPOSITE, CARBON-SULFUR COMPOSITE MANUFACTURED THEREBY, AND LITHIUM-SULFUR BATTERY

Номер: US20140099536A1
Автор: JUNG Hun Gi, KIM Jung Hoon, Sun Yang Kook
Принадлежит: IUCF-HYU(INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)

The present invention relates to a method for manufacturing a carbon-sulfur composite, a carbon-sulfur composite manufactured by the method, and a lithium-sulfur battery including the same. In the carbon-sulfur composite manufactured by the method for manufacturing the carbon-sulfur composite, the sulfur is filled up to inside of the carbon balls, and thereby uniformly distributed. Accordingly, the sulfur content is increased, resulting to increase of capacity property, and also electrode structure does not collapse even though the sulfur is changed to a liquid phase while charging or discharging the battery, resulting to showing stable cycle property. 1. A method for manufacturing a carbon-sulfur composite , which comprises the steps of:a) preparing a hard carbon ball;b) mixing the hard carbon balls and sulfur;c) filling the sulfur in the hard carbon balls by heating the mixture of the hard carbon balls and the sulfur at the first temperature under a certain pressure;d) cooling the sulfur-filled hard carbon balls to the room temperature; ande) heating the sulfur-filled hard carbon balls at the second temperature under a certain pressure.2. The method for manufacturing a carbon-sulfur composite according to claim 1 , wherein claim 1 , in the step of mixing the hard carbon balls and the sulfur claim 1 , the sulfur is mixed at the ratio of 50 to 150 parts per weight based on the hard carbon 100 parts by weight.3. The method for manufacturing a carbon-sulfur composite according to claim 1 , wherein claim 1 , in the step of filling the sulfur in the had carbon balls by heating the mixture of the hard carbon balls and the sulfur at the first temperature under the certain pressure claim 1 , the sulfur is filled in the hard carbon balls by heating the mixture of the hard carbon balls and the sulfur at the temperature of 130 to 170° C.4. The method for manufacturing a carbon-sulfur composite according to claim 1 , wherein claim 1 , in the step of heating the sulfur-filled ...

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Номер записи: 79
10-04-2014 дата публикации

NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM-ION SECONDARY BATTERY

Номер: US20140099539A1
Автор: Oguni Teppei, Tajima Ryota, Yamazaki Shunpei
Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

To provide a lithium-ion secondary battery which has high charge and discharge capacity, is capable of being charged and discharged at high rate and has good cycle characteristics. A negative electrode includes a current collector and a negative electrode active material layer. The current collector includes a plurality of protrusion portions extending in the direction substantially perpendicular to the current collector and a base portion connected to the plurality of protrusion portions. The protrusion portions and the base portion are formed using the same material containing titanium. At least side surfaces of the protrusion portions are covered with the negative electrode active material layer. In the negative electrode active material layer, silicon layers and silicon oxide layers are alternately stacked between a plane where the protrusion portions are in contact with the negative electrode active material layer and a surface of the negative electrode active material layer. 1. An active material for a lithium-ion secondary battery , comprising:a plurality of first layers and a plurality of second layers,wherein the plurality of first layers comprise silicon,wherein the plurality of second layers comprise silicon,wherein a concentration of oxygen in the plurality of first layers is higher than a concentration of oxygen in the plurality of second layers, andwherein the first layers and the second layers are alternately stacked.2. The active material for a lithium-ion secondary battery according to claim 1 , wherein the plurality of first layers comprise silicon oxide.3. The active material for a lithium-ion secondary battery according to claim 1 , wherein the plurality of second layers comprise a silicon alloy.4. A negative electrode for a lithium-ion secondary battery comprising:a current collector; andan active material in contact with the current collector,wherein the current collector includes a plurality of protrusion portions and a base portion connected ...

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Номер записи: 80
10-04-2014 дата публикации

LITHIUM-ENRICHED SOLID SOLUTION ANODE COMPOSITE MATERIAL AND PREPARATION METHOD FOR LITHIUM-ENRICHED SOLID SOLUTION ANODE COMPOSITE MATERIAL, LITHIUM-ION BATTERY ANODE PLATE, AND LITHIUM-ION BATTERY

Номер: US20140099540A1
Автор: Chen Chaohui
Принадлежит: Huawei Technologies Co., Ltd.

Embodiments of the present application provide a lithium-enriched solid solution anode composite material, which includes xLiMnO.(1-x)MO and a LiMePOlayer that is clad on a surface of xLiMnO.(1-x)MO, where x<1, M is one or more selected from: Ni, Co, Mn, Ti, and Zr, and Me is one or more selected from: Co, Ni, V, and Mg. The lithium-enriched solid solution anode composite material has high stability in an electrolyte, may improve a cycle life, discharge capacity, rate performance, and initial charge-discharge efficiency of a lithium-ion battery, and is applicable in a condition of a high voltage greater than 4.6V. The embodiments of the present application further provide a preparation method for the lithium-enriched solid solution anode composite material, a lithium-ion battery anode plate containing the lithium-enriched solid solution anode composite material, and a lithium-ion battery containing the lithium-ion battery anode plate. 1. A lithium-enriched solid solution anode composite material , comprising:{'sub': 2', '3', '4', '2', '3, 'xLiMnO.(1-x)MO and a LiMePOlayer that is clad on a surface of xLiMnO.(1-x)MO, wherein x<1, M is one or more selected from: Ni, Co, Mn, Ti, and Zr, and Me is one or more selected from: Co, Ni, V, and Mg.'}2. The lithium-enriched solid solution anode composite material according to claim 1 , wherein a thickness of the LiMePOlayer is 1-10 nm.3. The lithium-enriched solid solution anode composite material according to claim 1 , wherein a part of Me in LiMePOis clad on the surface of xLiMnO.(1-x)MO claim 1 , and the other part of Me is embedded in a crystal lattice of xLiMnO.(1-x)MO.4. A preparation method for a lithium-enriched solid solution anode composite material claim 1 , the method comprising:{'sub': 2', '3, 'obtaining a compound xLiMnO.(1-x)MO, wherein x<1, and M is one or a combination of: Ni, Co, Mn, Ti, and Zr;'}{'sub': 3', '2, 'mixing ammonium dihydrogen phosphate, glycolic acid, Me(NO), and lithium nitrate at a molar ratio ...

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Номер записи: 81
10-04-2014 дата публикации

ELECTRODE ACTIVE MATERIAL HAVING CORE-SHELL STRUCTURE

Номер: US20140099546A1
Автор: CHANG WonSeok, Choi Seungyoun, Kim Jeyoung, KIM Taeyeon, Lee Seo-Jae
Принадлежит: LG CHEM, LTD.

Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction. 1. An electrode active material having a core-shell structure , which comprises(a) a core capable of intercalating and deintercalating lithium ions; and(b) a shell comprising a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell.2. The electrode active material as claimed in claim 1 , wherein the shell (b) comprises the polymer or oligomer having a glass transition temperature of −20° C. or less when impregnated with an electrolyte.3. The electrode active material as claimed in claim 1 , wherein the polymer or oligomer of the shell (b) comprises an ether (—O—) group.4. The electrode active material as claimed in claim 1 , wherein the shell (b) comprises the polymer or oligomer selected from the group consisting of polyethylene glycol claim 1 , polyethylene oxide claim 1 , polyethylene glycol methyl ether claim 1 , polyethylene glycol dimethyl ether claim 1 , poly propylene oxide claim 1 , polyethylene claim 1 , polypropylene claim 1 , polyisobutylene claim 1 , and polyvinylidene chloride.5. The electrode active material as claimed in claim 1 , wherein the shell (b) has a thickness ranging from 0.001 μm to 1 μm.6. The electrode active material as claimed in claim 1 , wherein the core (a) is selected from the group consisting of carbon ...

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Номер записи: 82
06-01-2022 дата публикации

COMPOSITIONS AND METHODS FOR ENERGY STORAGE DEVICES INCLUDING SALTS AND/OR FOAMS

Номер: US20220006071A1
Автор: Duong Hieu Minh, Petrowsky Matt, Shin Joon Ho, Tapia Vicente
Принадлежит:

An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode. At least one of the electrodes can include an electrode film prepared by a dry process. The electrode film, the electrode and/or the separator can comprise a salt, improved porosity, increased density, be prelithiated, and/or a foam. Process and apparatuses used for fabricating the electrode and/or electrode film are also described. 1. A dry electrode film of an energy storage device , comprising:a dry active material;a dry binder; anda dry electrolyte salt, wherein the dry electrode film is free-standing.2. The dry electrode film of claim 1 , wherein the dry electrolyte salt is selected from LiPF claim 1 , LiBF claim 1 , LiBOB claim 1 , LiN(SOCF) claim 1 , LiOSOCF claim 1 , LiNO claim 1 , a lithium acetate claim 1 , a lithium halide claim 1 , a tetra-alkylammonium tetrafluoroborate claim 1 , a tetra-alkylammonium hexafluorophosphate claim 1 , a garnet ion conductor claim 1 , a sulfur based ion conductor claim 1 , LiLaTiO(LLTO) claim 1 , LiLaZrO(LLZO) claim 1 , a Lithium Super Ionic Conductor (LISCON) claim 1 , lithium hexafluorophosphate claim 1 , lithium bis(trifluoromethanesulfonyl)imide claim 1 , lithium tetrafluoroborate claim 1 , lithium trifluoromethanesulfonate claim 1 , lithium perchlorate claim 1 , lithium bis(trifluoromethane sulfonimide (LiTFSI) claim 1 , lithium bis(oxalato)borate claim 1 , LiLaZrTaO claim 1 , LiSnPS claim 1 , LixLaTiO claim 1 , LiLaZr(PO) claim 1 , LiTiAl(PO) claim 1 , LiTiAlSi(PO) claim 1 , and LiTiZr(PO) claim 1 , and combinations thereof.3. The dry electrode film of claim 1 , wherein the dry electrolyte salt comprises 1-10 wt. % of the dry electrode film.4. The dry electrode film of claim 1 , wherein the dry electrode film has a thickness of at least 110 μm.5. The dry electrode film of claim 1 , wherein the dry electrode film has an electrode film density of at least 0.8 g/cm.6. A dry gradient electrode film of an energy ...

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Номер записи: 83
06-01-2022 дата публикации

CATHODE COMPRISING MIXTURE LAYER HAVING DUAL LAYER STRUCTURE WITH DIFFERENT LNO AMOUNTS, AND SECONDARY BATTERY COMPRISING SAME

Номер: US20220006083A1
Автор: JANG Min Chul, JUNG Byoung Hyo, KIM Il Hong, LIM Sung Chul
Принадлежит: LG CHEM, LTD.

The present invention relates to a cathode comprising a mixture layer having a dual layer structure with different LNO amounts, and a secondary battery comprising same, the cathode enabling battery performance to increase while preventing battery cell stability from degrading. 1. A positive electrode for a secondary battery , comprising:a current collector layer;a lower mixture layer disposed on one or both surfaces of the current collector layer; andan upper mixture layer disposed on the lower mixture layer,{'sub': z', '2, 'wherein the lower mixture layer and the upper mixture layer both include an active material containing LiNiO, wherein 1.1≤x≤2.5, (LNO),'}wherein based on 100 parts by weight of the active material contained in the lower mixture layer, a content of the LNO in the lower mixture is 60 parts by weight or more, andwherein based on a total 100 parts by weight of the active material contained in the upper mixture layer, a content of the LNO in the upper mixture layer is in a range of 1 to 40 parts by weight.2. The positive electrode of claim 1 ,wherein the active material includes a first active material and a second active material,wherein the first active material is the LNO, and{'sub': x', '2', 'x', '2', 'x', '2', '4', 'x', 'a', 'b', 'c', '2', 'x', '1-y', 'y', '2', 'x', '1-y', 'y', '2', 'x', '1-y', 'y', '2', 'x', 'a', 'b', 'c', '4', 'x', '2-z', 'z', '4', 'x', '2-z', 'z', '4', 'x', '4', 'x', '4, 'wherein, the second active material comprises one or more selected from the group consisting of LiCoO(0.5 Подробнее

Номер записи: 84
01-01-2015 дата публикации

COMPOSITION FOR FORMING SECONDARY CELL ELECTRODE, SECONDARY CELL ELECTRODE, AND SECONDARY CELL

Номер: US20150004486A1
Автор: Haruta Issey, Hatemata Akihiko, Moroishi Yasuyuki
Принадлежит:

It is possible to form a secondary cell having excellent charge-discharge cycle properties and to improve dispersibility of the active substance and the auxiliary conductor and pliability and close adhesion of the electrodes by using a composition for forming a secondary cell electrode that comprises at least one of an electrode active substance (A) and a carbon material (B) that serves as an auxiliary conductor, a water-soluble additive (C) that is a water-soluble additive formed from carbon atoms, oxygen atoms, and hydrogen atoms and that has 2 to 20 oxygen atoms per 1 molecule, and water (D). 1. A secondary cell electrode-forming composition including: at least one of (A) an electrode active material or (B) a carbon material as a conductive aid; (C) a water-soluble additive that comprises carbon , oxygen , and hydrogen atoms and has 2 to 20 oxygen atoms per molecule; and (D) water.2. The secondary cell electrode-forming composition according to claim 1 , the water-soluble additive (C) is represented by the following general formula (1):{'br': None, 'X—Y—Z\u2003\u2003(1),'}wherein, X is a hydrogen atom, a carboxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxyl group, a substituted or unsubstituted acyl group, or a substituted or unsubstituted alkoxycarbonyl group,Y is a direct bond, a substituted or unsubstituted alkylene group, or a substituted or unsubstituted alkoxylene group,Z is a hydroxyl group, a carboxyl group, a substituted or unsubstituted alkoxyl group, a substituted or unsubstituted alkoxycarbonyl group, or a substituted or unsubstituted acyloxy group, andX and Z may be linked together to form a ring.3. The secondary cell electrode-forming composition according to claim 2 , wherein claim 2 , in formula (1) claim 2 ,X is a hydrogen atom, a carboxyl group, a substituted or unsubstituted alkyl group, or an acyl group, and{'sub': 'n', 'Y is a group represented by —(O—R—)—, wherein R is a substituted or ...

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Номер записи: 85
01-01-2015 дата публикации

COMPOSITION OF SI/C ELECTRO ACTIVE MATERIAL

Номер: US20150004488A1
Автор: Abdelsalam Mamdouh Elsayed, Coowar Fazil
Принадлежит:

A composition comprising at least 50 weight % of a first particulate electroactive material and 3-15 weight % of a carbon additives mixture comprising elongate carbon nanostructures and carbon black, wherein: the elongate carbon nanostructures comprise at least a first elongate carbon nanostructure material and a different second elongate carbon nanostructure material; and the elongate carbon nanostructures:carbon black weight ratio is in the range 3:1 to 20:1. 1. A composition comprising at least 50 weight % of a first particulate electroactive material and 3-15 weight % of a carbon additives mixture comprising elongate carbon nanostructures and carbon black , wherein:the elongate carbon nanostructures comprise at least a first elongate carbon nanostructure material and a different second elongate carbon nanostructure material; andthe elongate carbon nanostructures:carbon black weight ratio is in the range 3:1 to 20:1.2. A composition according to wherein the first particulate electroactive material is a silicon-comprising material.3. A composition according to any preceding claim wherein the first particulate electroactive material comprises particles having a particle core and electroactive pillars extending from the particle core.4. A composition according to and wherein the pillars of the silicon-comprising particles are silicon pillars.5. A composition according to wherein the core of the silicon-comprising particles comprises silicon.65. A composition according to any of - wherein the silicon-comprising particles consist essentially of n- or p-doped silicon and wherein the pillars are integral with the core.7. A composition according to any preceding claim wherein the first elongate nanostructure has a mean average diameter of at least 100 nm.8. A composition according to any preceding claim wherein the second elongate carbon nanostructure material has a mean average diameter of no more than 90 nm claims 2 , optionally a mean average diameter in the range of ...

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Номер записи: 86
01-01-2015 дата публикации

INTERMETALLIC M-Sn5 (M=Fe, Cu, Co, Ni) COMPOUND AND A METHOD OF SYNTHESIS THEREOF

Номер: US20150004490A1
Автор: Han Weiqiang, Wang Xiao-Liang
Принадлежит: Brookhaven Science Associates, LLC

Novel intermetallic materials are provided that are composed of tin and one or more additional metal(s) having a formula M-Sn, where −0.1≦x≦0.5, with 0.01≦x≦0.4 being more preferred and the second metallic element (M) is selected from iron (Fe), copper (Cu), cobalt(Co), nickel (Ni), and a combination of two or more of those metals. Due to low concentration of the second metallic element, the intermetallic compound affords an enhanced capacity applicable for electrochemical cells and may serve as an intermediate phase between Sn and MSn. A method of synthesizing these intermetallic materials is also disclosed. 1. An intermetallic material comprising: {'br': None, 'sub': (1-x)', '5, 'M-Sn,\u2003\u2003(1)'}, 'a tin (Sn)-based intermetallic compound having a formula (1)'}wherein a second metallic element (M) is selected from the group consisting of iron (Fe), copper (Cu), cobalt (Co), and nickel (Ni) and x ranges between about −0.1 and about 0.5.2. The intermetallic material of claim 1 , wherein x ranges between about 0.01 and about 0.4.3. The intermetallic material of claim 1 , wherein the tin (Sn)-based intermetallic compound forms a single crystal having a tetragonal lattice in the P4/mcc space group.4. (canceled)5. The intermetallic material of claim 1 , wherein the tin (Sn)-based intermetallic compound has a formula FeSnor CoSn.6. The intermetallic material of claim 3 , wherein the lattice parameters of the crystal are a=b=6.91369 Å claim 3 , c=5.88967 Å claim 3 , and α=β=γ=90°.7. (canceled)8. The intermetallic material of claim 3 , wherein the lattice parameters of the crystal tire a=b=6.90567 Å claim 3 , c=5.85077 Å claim 3 , and α=β=γ=90°.9. The intermetallic material of claim 5 , wherein the tin (Sn)-based intermetallic compound is a canted antiferromagnet.10. The intermetallic material of claim 1 , wherein the intermetallic material is a nanomaterial having a size at its shortest cross-section that ranges between about 10 and about 500 nm in size and selected ...

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Номер записи: 87
01-01-2015 дата публикации

Multilayer Si/Graphene Composite Anode Structure

Номер: US20150004494A1
Автор: Chen Chih-Jung, Hu Shu-Fen, Hung Tai-Feng, HWANG Bing-Joe, Lin Hong-Zheng, Lin Yi-Qiao, Liu Ru-Shi, Mohamed Saad G., SUNG Chien-Ming, Tatsuhiro Mori
Принадлежит:

The present invention discloses a high electrochemical performance silicon/graphene composite anode structure. The electrochemical properties of silicon in the composite anode structure can be improved by graphene thin films. The thickness of the silicon thin film and the graphene thin films is less than 50 nm to prevent the composite anode structure from any volumetric change during the charge/discharge process. The manufacturing procedure starts with the formation of a Si/graphene unit layer, which includes an amorphous phase upper silicon thin film and a lower graphene thin film, on a copper foil current collector, so as to decrease the difference of conductivity between the silicon thin film and the copper foil current collector. Finally, the deposition is concluded with the formation of a graphene thin film on the topmost surface of the silicon thin film to prevent the surface of the anode structure from oxidation. 1. A multilayer composite anode structure deposited onto an anode substrate using an Electron Beam Evaporation , comprising:at least one Si/graphene unit layer having an amorphous phase upper silicon thin film and a lower graphene thin film; anda graphene thin film deposited onto the amorphous phase upper silicon thin film.2. The multilayer composite anode structure according to claim 1 , wherein when the at least one Si/graphene unit layer has a number more than one claim 1 , a first one of the Si/graphene unit layers is deposited on the anode substrate claim 1 , and each one of the rest Si/graphene unit layers is deposited on a preceding one.3. The multilayer composite anode structure according to claim 1 , wherein the anode substrate is a copper foil.4. The multilayer composite anode structure according to claim 1 , wherein the at least one Si/graphene unit layer includes 7 Si/graphene unit layers.5. The multilayer composite anode structure according to claim 4 , wherein the thin film of each of the Si/graphene unit layers has a thickness of 50 nm ...

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Номер записи: 88
01-01-2015 дата публикации

PRELOADING LITHIUM ION CELL COMPONENTS WITH LITHIUM

Номер: US20150004495A1
Автор: Cui Yi, Han Song, Platshon Mark C.
Принадлежит:

Provided are novel negative electrodes for use in lithium ion cells. The negative electrodes include one or more high capacity active materials, such as silicon, tin, and germanium, and a lithium containing material prior to the first cycle of the cell. In other words, the cells are fabricated with some, but not all, lithium present on the negative electrode. This additional lithium may be used to mitigate lithium losses, for example, due to Solid Electrolyte Interphase (SEI) layer formation, to maintain the negative electrode in a partially charged state at the end of the cell discharge cycle, and other reasons. In certain embodiments, a negative electrode includes between about 5% and 25% of lithium based on a theoretical capacity of the negative active material. In the same or other embodiments, a total amount of lithium available in the cell exceeds the theoretical capacity of the negative electrode active material. 1. A lithium ion cell comprising:a negative electrode comprising a negative active material disposed on a negative electrode substrate and configured for inserting and removing lithium ions during battery cycling;a positive electrode comprising a positive active material disposed on a positive electrode substrate and configured for inserting and removing the lithium ions during battery cycling;a separator for electronically isolating the negative electrode and the positive electrode in the lithium ion cell and for allowing the lithium ions to transfer between the negative electrode and the positive electrode during battery cycling,wherein the negative active material includes lithium prior to assembly of the lithium ion cell,wherein the active material comprises one or more elements selected from the group consisting of silicon, germanium, and tin; andwherein the active material forms an active layer and wherein there is a concentration gradient of lithium along the thickness of the active layer.2. The lithium ion cell of claim 1 , wherein the active ...

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Номер записи: 89
01-01-2015 дата публикации

ELECTRODE MATERIAL, A BATTERY ELECTRODE, METHOD OF PRODUCING THEM, NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK

Номер: US20150004500A1
Автор: HARADA Yasuhiro, Hoshina Keigo, INAGAKI Hiroki, Takami Norio, Zhang Wen
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, there is provided an electrode material. The electrode material includes an active material which includes a titanium oxide compound having a monoclinic titanium dioxide crystal structure. The electrode material further includes a compound which exists on the surface of the active material and has a trialkylsilyl group represented by the formula (I). 14-. (canceled)7. The electrode material according to claim 5 , wherein the compound selected from the phosphoric acid compounds containing the trialkylsilyl group and boric acid compounds containing the trialkylsilyl group exists in a surface of a primary particle of the active material.8. The electrode material according to claim 5 , wherein a specific surface area of the titanium oxide compound having a monoclinic titanium dioxide crystal structure is in a range from 5 m/g to 100 m/g.9. he electrode material according to claim 5 , wherein the compound having a trialkylsilyl group exists in a surface and inside of primary particle of the titanium oxide compound.12. The battery electrode according to claim 10 , wherein the compound selected from the phosphoric acid compounds containing the trialkylsilyl group and boric acid compounds containing the trialkylsilyl group exists in a surface of a primary particle of the active material.13. The battery electrode according to claim 10 , wherein a specific surface area of the titanium oxide compound having a monoclinic titanium dioxide crystal structure is in a range from 5 m/g to 100 m/g.14. The battery electrode according to claim 10 , wherein the compound having a trialkylsilyl group exists in a surface and inside of primary particle of the titanium oxide compound.17. The battery according to claim 15 , wherein a compound selected from the phosphoric acid compounds containing the trialkylsilyl group and boric acid compounds containing the trialkylsilyl group exists in a surface of a primary particle of the active material.18. The battery ...

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Номер записи: 90
05-01-2017 дата публикации

NOVEL CARBONIZED POLYANILINE-GRAFTED SILICON NANOPARTICLES ENCAPSULATED IN GRAPHENE SHEETS FOR LI-ION BATTERY ANODES

Номер: US20170005328A1
Автор: Xie Jian
Принадлежит: INDIANA UNIVERSITY RESEARCH AND TECHNOLOGY CORPORATION

A method for producing a graphene-composite material, including removing any oxide layer from each of a plurality of silicon nanoparticles, forming a polyaniline layer over each clean silicon nanoparticle, binding a graphene oxide sheet to the polyaniline layer of each particle, and carbonizing the polyaniline to yield a plurality of composite particles. Each composite particle has a graphene outer layer substantially encapsulating a silicon inner core. 1. A method for producing a graphene-composite material , comprising:a) providing a plurality of silicon nanoparticles;b) removing any oxide layer from each respective silicon nanoparticle to yield clean silicon nanoparticles;c) forming a polyaniline layer over each respective clean silicon nanoparticle to yield a plurality of polyaniline functionalized particles;d) binding a graphene oxide sheet to the polyaniline layer of each respective polyaniline functionalized particle to yield a plurality of green particles; ande) carbonizing the polyaniline layer of each respective green particle to yield a plurality of composite particles;wherein each respective composite particle has a graphene outer layer substantially encapsulating a silicon inner core; andwherein the respective silicon nanoparticles have diameters of less than about 100 nanometers.2. The method of wherein in b) claim 1 , the oxide layer is removed by washing the silicon nanoparticles with an HF solution; and wherein in b) the resulting clean silicon nanoparticles have residual oxide layers less than 5 nm thick.3. The method of wherein in c) claim 1 , a polyaniline layer is formed over each respective clean silicon nanoparticle through surface-initiated polymerization of aniline on the surface of aniline-functionalized Si nanoparticles.4. The method of and further comprising:f) forming an electrode member from a quantity of composite particles;g) incorporating the electrode member in a lithium-ion battery.5. The method of claim 4 , wherein the electrode ...

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Номер записи: 91
07-01-2016 дата публикации

Doped and Island-Covered Lithium Cobaltite Oxides

Номер: US20160006026A1
Автор: Blangero Maxime, Paulsen Jens
Принадлежит:

Disclosed is a cathode active material and a method to produce the same at low cost. The cathode powder comprises modified LiCoO, and possibly a second phase which is LiM′Owhere M′ is Mn, Ni, Co with a stoichiometric ratio Ni:Mn≧1. The modified LiCoOis Ni and Mn bearing and has regions of low and high manganese content, where regions with high manganese content are located in islands on the surface. The cathode material has high cycling stability, a very high rate performance and good high temperature storage properties. 1. A powderous lithium metal oxide for a cathode material in a rechargeable battery comprising particles having the general composition LiCoMMOwith 0.97 Подробнее

Номер записи: 92
07-01-2016 дата публикации

ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

Номер: US20160006027A1
Автор: Kim Hyun-Chul, Kim Je-Young, LEE Yong-Ju
Принадлежит: LG CHEM LTD.

Disclosed herein is a non-carbon-based anode active material for lithium secondary batteries, including: a core containing silicon (Si); and silicon nanoparticles formed on the surface of the core. The non-carbon-based anode active material is advantageus in that the increase in the volume expansion during charging-discharging can be prevented by the application of silicon nanoparticles, and in that SiOx(x<1.0) can be easily prepared. 1. A non-carbon-based anode active material for lithium secondary batteries , comprising:a core containing silicon (Si); andsilicon nanoparticles formed on the surface of the core.2. The non-carbon-based anode active material of claim 1 , wherein the silicon nanoparticles are included in an amount of 20 to 200 parts by weight claim 1 , based on 100 parts by weight of the core.3. The non-carbon-based anode active material of claim 1 , wherein the silicon nanoparticles are included in an amount of 50 to 100 parts by weight claim 1 , based on 100 parts by weight of the core.4. The non-carbon-based anode active material of claim 1 , wherein the silicon nanoparticles have a particle diameter of 5 to 100 nm.5. The non-carbon-based anode active material of claim 4 , wherein the silicon nanoparticles have a particle diameter of 20 to 80 nm.6. The non-carbon-based anode active material of claim 1 , wherein the core has a particle diameter of 1 to 30 μm.7. The non-carbon-based anode active material of claim 6 , wherein the core has a particle diameter of 3 to 10 μm.8. The non-carbon-based anode active material of claim 1 , further comprising a coating layer formed on the surface of the core and containing carbon (C).9. The non-carbon-based anode active material of claim 8 , wherein the coating layer is included in an amount of 5 to 70 wt % claim 8 , based on a total amount of the anode active material.10. The non-carbon-based anode active material of claim 1 , wherein the core is made of SiOx (0 Подробнее

Номер записи: 93
07-01-2016 дата публикации

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY BY USING SAME

Номер: US20160006029A1
Автор: Ogasawara Takeshi, SUGAYA Junichi, Takijiri Manabu, Yanagida Katsunori
Принадлежит: SANYO ELECTRIC CO., LTD.

A high-capacity non-aqueous electrolyte secondary battery capable of maintaining good cycle characteristics even in the case where large current discharge is repeated is provided. A positive electrode active material particle () includes a base particle () produced by agglomeration of primary particles () made from lithium transition metal oxide containing tungsten and a rare earth compound particles () attached to the surface of the base particle (). Preferably, the rare earth compound is attached to the interface at which the primary particles are in contact with each other or the vicinity of the interface. 1. A non-aqueous electrolyte secondary battery active material comprising:a base particle produced by agglomeration of primary particles made from lithium transition metal oxide containing tungsten; anda rare earth compound attached to the surface of the base particle.2. The non-aqueous electrolyte secondary battery active material according to claim 1 ,wherein the rare earth compound is attached to the interface at which the primary particles are in contact with each other or the vicinity of the interface.3. The non-aqueous electrolyte secondary battery active material according to claim 1 ,wherein the tungsten is contained in the inside of the primary particle.4. The non-aqueous electrolyte secondary battery active material according to claim 1 ,wherein zirconium is contained in the inside of the primary particle.5. The non-aqueous electrolyte secondary battery active material according to claim 1 ,{'sub': x', '1-y', 'y', '2, 'wherein the lithium transition metal oxide is represented by a composition formula LiMWO(M represents at least one type of element selected from the group consisting of Ni, Co, Mn, and Al, where 0.9 Подробнее

Номер записи: 94
07-01-2016 дата публикации

POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY USING SAME

Номер: US20160006030A1
Автор: HAYASHI Tetsutaro, ODA Shuhei, SAKA Hideyuki, Toya Hiroyuki
Принадлежит:

A positive electrode active material for lithium secondary batteries disclosed herein comprises a lithium transition metal oxide of a layered structure, represented by formula LiNiCoMnCaMO(where −0.05≦α≦0.2, x+y+z+β+γ≅1, 0.3≦x≦≦0.7, 0.1≦y≦0.4, 0.1≦z≦0.4, 0.0002≦β≦0.0025, 0.0002≦β+γ≦0.02, and in a case where γ>0, M is absent or represents one, two or more elements selected from the group consisting of Na, Mg, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W). The tap density of the positive electrode active material ranges from 1.8 to 2.5 g/cm. 1. A particulate positive electrode active material that is used in a lithium secondary battery , comprising: {'br': None, 'sub': 1+α', 'x', 'y', 'z', 'β', 'γ', '2, 'LiNiCoMnCaMO\u2003\u2003(I)'}, 'a lithium transition metal oxide of a layered structure, represented by formula (I)'}(where, −0.05≦α≦0.2, x+y+z+β+γ=1, 0.0002≦β≦0.0025 and 0.0002≦β+γ≦0.02; and M is absent or represents one, two or more elements selected from the group consisting of Na, Mg, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W), wherein{'sup': 3', '3, 'the tap density of the positive electrode active material ranges from 1.8 g/cmto 2.5 g/cm.'}2. The positive electrode active material according to claim 1 , whereinin a volume-basis particle size distribution measured on the basis of a laser diffraction/light scattering method,{'sub': '50', 'an average particle size Dcorresponding to a cumulative 50% from the fine particle side ranges from 5 μm to 9 μm, and'}{'sub': 10', '90', '50', '90', '10', '50, 'a particle size Dcorresponding to a cumulative 10% from the fine particle side, a particle size Dcorresponding to a cumulative 90% from the fine particle side, and said average particle size Dsatisfy the following relationship: (D−D)/D≦0.7.'}3. The positive electrode active material according to claim 1 , whereinsaid positive electrode active material is a hollow structure having a shell section made up of the lithium transition metal oxide of a layered structure, and a hollow ...

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Номер записи: 95
07-01-2016 дата публикации

Stoichiometrically Controlled Lithium Cobalt Oxide Based Compounds

Номер: US20160006032A1
Автор: Blangero Maxime, Choi Da-In, Paulsen Jens
Принадлежит:

A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M═CoM′, with O≦a≦0.05, wherein M′ is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si. 1. A lithium metal oxide powder for a cathode material in a rechargeable battery , comprising a core material and a surface layer , the core having a layered crystal structure consisting of the elements Li , a metal M and oxygen , wherein the metal M has the formula M═CoM′ , wherein M′ is Al or M′ is Al and either one or more of Mg , Ti , Ga and B; and the surface layer comprising Li , Co , and inorganic N-based oxides or lithiated oxides , wherein N is Al , Ti and Mg or N is Al , Ti , Mg and either one or more metals of the group consisting of Fe , Cu , Ca , Ba , Y , Sn , Sb , Na , Zn , Zr and Si , and wherein the molar ratios Mg:Co>0.004 , Al:Co>0.004 and wherein the sum of Mg , Al and Ti molar contents in the core is less than the sum of Mg , Al and Ti molar contents in the surface layer.2. The lithium metal oxide powder of claim 1 , wherein the molar ratio Li:(Co+Al) is more than 0.98 and less than 1.01.3. The lithium metal oxide powder of claim 1 , having a mean particle size D50 of at least 15 μm.4. The lithium metal based powder of claim 1 , wherein the powder has a bimodal particle shape distribution where the small particle size fraction has a D50≦5 μm and is between 3 to 20 Vol % claim 1 , and where the large particle size fraction has a D50≧15 μm.5. The lithium metal oxide powder of claim 1 , wherein the ...

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Номер записи: 96
07-01-2016 дата публикации

NON-AQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK

Номер: US20160006073A1
Автор: INAGAKI Hiroki, Takami Norio
Принадлежит: KABUSHIKI KAISHA TOSHIBA

The non-aqueous electrolyte battery includes an outer case, a positive electrode housed in the outer case, a negative electrode housed in the outer case such that the negative electrode is separated from the positive electrode, and a non-aqueous electrolyte accommodated in the outer case. The negative electrode comprises a current collector and negative electrode layer formed on one surface or both surfaces of the current collector. The negative electrode layer includes at least one main negative electrode layer which is formed on the surface of the current collector and contains a first active material, and a surface layer which is formed on the surface of the main negative electrode layer and contains a second active material different from the first active material, the second active material being a lithium titanium composite oxide having a spinel structure. 114-. (canceled)15. A non-aqueous electrolyte battery , comprising:an outer case;a positive electrode housed in the outer case;a negative electrode housed in the outer case with a space from the positive electrode; anda non-aqueous electrolyte accommodated in the outer case,wherein the negative electrode comprises a current collector and a negative electrode layer formed on one surface or both surfaces of the current collector, and [ {'sup': '+', 'wherein the first active material has the lithium absorption-release potential of higher than 1.0 V (vs. Li/Li), and'}, 'at least one main negative electrode layer which is formed on the surface of the current collector and comprises a first active material,'}, 'wherein the surface layer comprises a second active material, which is different from the first active material,', 'a surface layer which is formed on the surface of the main negative electrode layer,'}, {'sup': '5', 'wherein a volume resistivity of the second active material in a lithium-nonabsorbed state is 1×10Ω cm or more, and'}, {'sup': '−2', 'wherein the volume resistivity of the second active ...

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Номер записи: 97
04-01-2018 дата публикации

ANODE AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

Номер: US20180006300A1
Автор: Jeong Kwang Ho, Kim Je Young, Rho Ye Cheol, YOO Jung Woo
Принадлежит: LG CHEM, LTD.

The present invention relates to a negative electrode including an active material layer which includes carbon-based particles having an oxygen content of 700 mg/kg to 1,700 mg/kg, and a secondary battery including the same. 1. A negative electrode comprising an active material layer which includes carbon-based particles having an oxygen content of 700 mg/kg to 1 ,700 mg/kg.2. The negative electrode of claim 1 , wherein the oxygen content of the carbon-based particles is in a range of 1 claim 1 ,000 mg/kg to 1 claim 1 ,600 mg/kg.3. The negative electrode of claim 1 , wherein the carbon-based particles comprise at least one selected from the group consisting of a hydroxyl group claim 1 , a carboxyl group claim 1 , and an epoxy group.4. The negative electrode of claim 1 , wherein the at least one selected from the group consisting of a hydroxyl group claim 1 , a carboxyl group claim 1 , and an epoxy group is disposed on a surface of the carbon-based particles.5. The negative electrode of claim 1 , wherein the carbon-based particles comprise at least one selected from the group consisting of artificial graphite claim 1 , natural graphite claim 1 , graphitized carbon fibers claim 1 , and graphitized meso-carbon microbeads.6. The negative electrode of claim 5 , wherein the carbon-based particles are the natural graphite.7. The negative electrode of claim 1 , wherein the active material layer further comprises a binder.8. The negative electrode of claim 7 , wherein a weight ratio of the carbon-based particles to the binder is in a range of 95:5 to 99:1.9. The negative electrode of claim 7 , wherein the binder comprises at least one selected from the group consisting of a polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-co-HFP) claim 7 , polyvinylidene fluoride claim 7 , polyacrylonitrile claim 7 , polymethylmethacrylate claim 7 , polyvinyl alcohol claim 7 , carboxymethylcellulose (CMC) claim 7 , starch claim 7 , hydroxypropyl cellulose claim 7 , regenerated ...

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Номер записи: 98
04-01-2018 дата публикации

RECHARGEABLE BATTERY

Номер: US20180006333A1
Автор: Brew Kevin W., Gunawan Oki, Saurabh Singh, Todorov Teodor K.
Принадлежит:

A lithium rechargeable lithium battery including a conductive substrate, a cathode material layer disposed over the conductive substrate, a solid electrolyte material layer disposed over the cathode material layer, an anode material layer disposed over the solid electrolyte material layer, and a conductive layer disposed over the anode material layer. 1. A rechargeable lithium battery comprising:a conductive substrate;a cathode material layer disposed over the conductive substrate;a solid electrolyte material layer disposed over the cathode material layer;an anode material layer disposed over the solid electrolyte material layer; anda conductive layer disposed over the anode material layer.2. The rechargeable lithium battery of claim 1 , wherein the conductive substrate comprises carbon (C) claim 1 , nickel (Ni) claim 1 , cobalt (Co) claim 1 , titanium (Ti) claim 1 , chromium (Cr) claim 1 , vanadium (V) claim 1 , iron (Fe) claim 1 , zinc (Zn) claim 1 , magnesium (Mn) claim 1 , tungsten (W) claim 1 , copper (Cu) claim 1 , tin oxide (SnO) claim 1 , zinc oxide (ZnO) claim 1 , indium oxide (InO) claim 1 , or a combination thereof.3. The rechargeable lithium battery of claim 1 , wherein the cathode material comprises a lithium composite oxide.4. The rechargeable lithium battery of claim 3 , wherein the lithium composite oxide is LiCoO claim 3 , LiNiO claim 3 , LiNiO claim 3 , LiMnO claim 3 , LiMnO claim 3 , LiFePO claim 3 , LiFePO claim 3 , LiMnPO claim 3 , LiFeBO claim 3 , LiV(PO) claim 3 , LiCuO claim 3 , LiFeF claim 3 , LiFeSiO claim 3 , LiFeSiO claim 3 , or a combination thereof.5. The rechargeable lithium battery of claim 1 , wherein the solid electrolyte material comprises LiLaTiO(wherein 0.1≦x≦0.5) claim 1 , LiLaZrO(wherein −5≦x≦3) claim 1 , LiTiO claim 1 , LiSiPO claim 1 , LiAlTi(PO) claim 1 , LiCrTi(PO) claim 1 , LiInTi(PO) claim 1 , LiTaO claim 1 , LiNbO claim 1 , or a combination thereof.6. The rechargeable lithium battery of claim 1 , wherein an ion ...

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Номер записи: 99
07-01-2021 дата публикации

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND POSITIVE ELECTRODE ACTIVE MATERIAL

Номер: US20210005880A1
Автор: HORIKAWA Daisuke, NISHIKAWA Taku, SUGIURA Ryuta, YAGISHITA Sadahiro
Принадлежит:

A non aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode, and a non aqueous electrolyte, and the positive electrode active material includes a positive electrode active material particle containing a lithium transition metal compound, and a coating portion coating at least a part of a surface of the positive electrode active material particle. The coating portion contains a lithium ionic conductor containing lithium, a phosphoric acid group, and yttrium. The lithium ionic conductor includes a region A in which a ratio of yttrium is relatively rich and a region B in which the ratio of yttrium is relatively poor. 1. A non aqueous electrolyte secondary battery comprising:a positive electrode comprising a positive electrode active material,a negative electrode, anda non aqueous electrolyte,wherein the positive electrode active material includes:a positive electrode active material particle containing a lithium transition metal compound, anda coating portion coating at least a part of a surface of the positive electrode active material particle,the coating portion comprises a lithium ionic conductor comprising lithium, a phosphoric acid group, and yttrium, andthe lithium ionic conductor includes:a region A in which a ratio of yttrium is relatively rich, anda region B in which the ratio of yttrium is relatively poor.2. The non aqueous electrolyte secondary battery according to claim 1 , wherein the lithium ionic conductor is amorphous.3. The non aqueous electrolyte secondary battery according to claim 1 , wherein the lithium ionic conductor is represented by the following general formula:{'br': None, 'sub': x', 'y', '4-z, 'LiYPO,'}wherein x and y satisfy 1.5≤x≤4 and 0.005≤y≤3, and z represents an amount of oxygen deficiency.4. The non aqueous electrolyte secondary battery according to claim 1 ,wherein the ratio of yttrium is equal to or higher than a ratio of phosphorus in the region A, ...

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Номер записи: 100