ЛИТИЕВЫЙ АККУМУЛЯТОР

Изобретение относится к литиевым аккумуляторам. Безрамный литиевый аккумулятор с корпусом содержит по меньшей мере одну ячейку, включающую в себя два электрода, не имеющих органических связывающих веществ, токосъемники, разделенные сепараторами, и жидкий электролит, состоящий из раствора соли лития в органическом растворителе. Токосъемники представляют собой перфорированные металлические ленты в виде металлической сетки, тянутого металла или перфорированной металлической фольги. При этом каждый электрод выполнен путем запрессовки смеси активных материалов и компонентов с электронной проводимостью, не имеющей органических связывающих веществ, непосредственно в отверстия перфорированных металлических лент по обеим сторонам токосъемников. Причем минимальная толщина электродов в три раза превышает толщину токосъемника, а толщина токосъемника составляет 30-500 мкм. Изобретение позволяет создать литиевый аккумулятор с электродами с уменьшенным временем заряда и разряда, при этом сохранив высокую ...

СПОСОБ ИЗГОТОВЛЕНИЯ СТРУКТУРИРОВАННЫХ ЧАСТИЦ, СОСТОЯЩИХ ИЗ КРЕМНИЯ ИЛИ МАТЕРИАЛА НА ОСНОВЕ КРЕМНИЯ, И ИХ ПРИМЕНЕНИЕ В ПЕРЕЗАРЯЖАЕМЫХ ЛИТИЕВЫХ БАТАРЕЯХ

Изобретение относится к активному анодному материалу для литиевого аккумулятора и его использования в указанном аккумуляторе. Техническим результатом изобретения является улучшение циклических характеристик и снижение стоимости производства. Согласно изобретению столбчатые частицы на основе кремния или кремний-содержащего материала могут быть использованы как для получения композитной анодной структуры с полимерным связующим, проводящей добавкой и токоснимателем из металлической фольги, и электродной структуры. 10 н. и 27 з.п. ф-лы, 4 ил.

ЭЛЕКТРОД ДЛЯ ЛИТИЕВОЙ ВТОРИЧНОЙ БАТАРЕИ, ЛИТИЕВАЯ ВТОРИЧНАЯ БАТАРЕЯ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение относится к электроду для литиевой вторичной батареи, литиевой вторичной батарее и способу его изготовления. Согласно изобретению электрод для литиевой вторичной батареи включает в себя листовидный токосъемник и слой активного материала, нанесенный на этот токосъемник. Слой активного материала способен к поглощению и выделению лития и включает в себя множество столбчатых частиц, имеющих по меньшей мере один изгиб. Угол θ1, образованный направлением роста столбчатых частиц от основания до первого изгиба столбчатых частиц и направлением нормали к токосъемнику, предпочтительно составляет 10° или более и менее 90°. Когда θn+1 представляет собой угол, образованный направлением роста столбчатых частиц от n-го изгиба, отсчитанного от основания столбчатых частиц, до (n+1)-го изгиба и направлением нормали к токосъемнику, а n является целым числом 1 или более, θn+1 предпочтительно составляет 0° или более и менее 90°. Техническим результатом является высокая емкость, улучшение зарядных ...

Активный катодный материал на основе слоистых оксидов лития и переходных металлов для литий-ионных аккумуляторов, способ его получения и его соединение-предшественник

Изобретение относится к электротехнической промышленности и может быть использовано для производства материала положительного электрода (катода) на основе слоистых оксидов лития и переходных металлов с улучшенными электрохимическими свойствами для литий-ионных аккумуляторов. Активный катодный материал для литий-ионных аккумуляторов представляет собой соединение общей формулы Liа[NixMnyCoz]1-fCofAvO2, где 0.8≤a≤1.3, 0.3≤x≤1, 0≤y≤1, 0≤z≤1, 0.001≤f<1, 0≤v≤0.1, x+y+z=1, A – легирующая добавка, включающая по крайней мере один элемент, выбранный из группы: Al, Mg, Zr, W, Ti, Cr, V, Ca, Zn, Ga, Sr, Mo, Ru, In, Sc, и характеризуется радиально-ориентированными первичными частицами и градиентом концентраций кобальта и никеля в агломератах. Технический результат заключается в улучшении эксплуатационных характеристик активного катодного материала, а именно в увеличении циклов заряда/разряда при сохранении высокой удельной емкости благодаря формированию радиально-ориентированных первичных частиц и градиента ...

СПОСОБ ПОЛУЧЕНИЯ ЧАСТИЦ ПРЕКУРСОРА И ЧАСТИЦА ПРЕКУРСОРА, ПОЛУЧЕННАЯ ЭТИМ СПОСОБОМ

Изобретение относится к способу производства катода литий-ионного аккумулятора, в частности к способу получения частиц прекурсора без использования органических хелатирующих добавок для изменения скорости осаждения, и к частице прекурсора, полученной таким способом, а также относится к способу получения из этих частиц активных катодных частиц. В способе контролируют подачу продуктов с разным анионным составом и/или катионным составом и регулируют рН в соответствии с веществами, при этом частицы осаждаются с образованием суспензии, фильтруют и высушивают суспензию с осажденными частицами с получением частиц прекурсора. Оболочка частицы прекурсора со структурой ядро-оболочка имеет градиент анионов и/или катионов. Такая частица прекурсора может быть использована для производства катода литий-ионного аккумулятора. Техническим результатом является улучшение продолжительности и срока службы катодных частиц, улучшение электрохимических свойств катода, снижение стоимости. 2 н. и 11 з.п. ф-лы, 7 ...

ЭЛЕКТРОД, СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ, И СОДЕРЖАЩАЯ ЕГО АККУМУЛЯТОРНАЯ БАТАРЕЯ

... 1. Электрод для химического источника электрической энергии, содержащий по меньшей мере один токосъемник и нанесенную на него электродную композицию, которая содержит электрохимически активный материал, нанесена на токосъемник одним или несколькими слоями, имеет внутреннюю поверхность, примыкающую к токосъемнику и внешнюю поверхность, удаленную от токосъемника, и имеет не однородную пористость, которая снижается от внутренней поверхности в направлении внешней поверхности. 2. Электрод по п.1, выполненный в виде положительного электрода (катода). 3. Электрод по п.2, в котором электрохимически активный материал выбран из группы, в которую входят сера, неорганические или органические, в том числе олигомерные или полимерные, соединения на базе серы, а также простые и сложные металлические оксиды, сульфиды и их смеси. 4. Электрод по п.1, выполненный в виде отрицательного электрода (анода). 5. Электрод по п.4, в котором электрохимически активный материал выбран из группы, в которую входят металлические ...

СПОСОБ ИЗГОТОВЛЕНИЯ СТРУКТУРИРОВАННЫХ ЧАСТИЦ, СОСТОЯЩИХ ИЗ КРЕМНИЯ ИЛИ МАТЕРИАЛА НА ОСНОВЕ КРЕМНИЯ, И ИХ ПРИМЕНЕНИЕ В ПЕРЕЗАРЯЖАЕМЫХ ЛИТИЕВЫХ БАТАРЕЯХ

... 1. Кремнийсодержащая частица, имеющая центральную часть и массив выступающих из нее кремнийсодержащих столбиков. ! 2. Частица по п.1, отличающаяся тем, что указанный массив является упорядоченным. ! 3. Частица по п.1, отличающаяся тем, что указанный массив является разупорядоченным. ! 4. Частица по любому из пп.1-3, отличающаяся тем, что указанные столбики в первом направлении имеют размер от 0,08 до 0,70 мкм. ! 5. Частица по любому из пп.1-3, отличающаяся тем, что указанные столбики во втором направлении имеют размер от 4 до 100 мкм. ! 6. Частица по любому из пп.1-3, отличающаяся тем, что указанные столбики имеют соотношение сторон более чем 20:1. ! 7. Частица по любому из пп.1-3, отличающаяся тем, что поперечное сечение указанных столбиков является, по существу, круглым. ! 8. Частица по любому из пп.1-3, отличающаяся тем, что поперечное сечение указанных столбиков является, по существу, некруглым. ! 9. Частица по любому из пп.1-3, отличающаяся тем, что центральная часть и/или столбики ...

ЭЛЕКТРОД ДЛЯ ЛИТИЕВОЙ ВТОРИЧНОЙ БАТАРЕИ, ЛИТИЕВАЯ ВТОРИЧНАЯ БАТАРЕЯ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Электрод для литиевой вторичной батареи, содержащий листовидный токосъемник и слой активного материала, нанесенный на упомянутый токосъемник, при этом упомянутый слой активного материала включает в себя множество столбчатых частиц, имеющих по меньшей мере один изгиб, и ! упомянутые столбчатые частицы способны к поглощению и выделению лития. ! 2. Электрод для литиевой вторичной батареи по п.1, в котором угол θ1, образованный направлением роста упомянутых столбчатых частиц от основания до первого изгиба упомянутых столбчатых частиц и направлением нормали к упомянутому токосъемнику, составляет 10° или более и менее 90°. ! 3. Электрод для литиевой вторичной батареи по п.1, в котором, когда θn+1 представляет собой угол, образованный направлением роста упомянутых столбчатых частиц от n-го изгиба, отсчитанного от основания упомянутых столбчатых частиц, до (n+1)-го изгиба и направлением нормали к упомянутому токосъемнику, а n является целым числом 1 или более, упомянутый θn+1 составляет 0° или ...

Высокоэнтропийная оксидная керамика на основе медно-марганцевой шпинели для электропроводящих материалов и способ получения порошков из неё

Оксидная керамика на основе медно-марганцевой шпинели и способ получения керамических порошков предназначены для создания материалов с высокой электропроводностью в среднем диапазоне температур 300-800°С, которые могут быть использованы в качестве материала для токосъема в твердооксидных топливных элементах, в качестве электродов с рабочей температурой в указанном диапазоне, в качестве катализаторов, тонких пленок и покрытий, а также как компонент композитов, включая керметы. Создание высокоэнтропийной керамики на основе CuMn2O4 путем направленного легирования основными и минорными допантами увеличивает диапазон устойчивости кубической фазы шпинели, ингибирует процесс зародышеобразования других фаз, снижает темпы деградации с улучшением проводящих свойств. В качестве основных допантов керамика содержит Li+ и Ni2+ в количестве 0,05-0,3, а в качестве минорных допантов - Zn2+, Mg2+ и Cr3+, Sc3+, Al3+ в количестве 0-0,15 для заполнения тетра- и окта-позиции кристаллической структуры шпинели ...

Способ получения активного катодного композитного агломерированного материала с равномерным углеродным покрытием для литий-ионных аккумуляторов

Изобретение относится к области электрохимической промышленности, а именно к технологии агломерации электродных (катодных) материалов для применения в литий-ионных аккумуляторах с высокой объемной плотностью энергии посредством распылительной сушки. Технический результат, достигаемый изобретением, заключается в увеличении насыпной плотности с утряской активного катодного материала и повышении его удельной емкости при различных скоростях заряда/разряда. Способ получения активного катодного композитного агломерированного материала Li1+xFe1-xPO4/C, 0≤х≤0,1, включает следующие этапы: приготовление водной суспензии с содержанием твердой фазы 20-50 мас.%, содержащей источник железа - фосфат железа, источник лития - гидроксид лития, источник углерода - смесь сахарида и органической кислоты и дистиллированную воду; подача суспензии в потоке сжатого воздуха в камеру, содержащую по меньшей мере один источник микроволнового излучения, со скоростью 1-6 мл/мин, последующее распыление суспензии и ее ...

Nichtwässrige Sekundärbatterie

SEKUNDAERBATTERIE.

NICHTWÄSSRIGE SEKUNDÄRZELLE

VERBUNDPARTIKEL EINES AKTIVEN MATERIALS FÜR EINE POSITIVE ELEKTRODE UND VERFAHREN ZU DESSEN HERSTELLUNG, POSITIVE ELEKTRODE UND FESTKÖRPERBATTERIE

Bereitstellung eines Verbundpartikels eines aktiven Materials für eine positive Elektrode, der in der Lage ist, den Widerstand zu reduzieren, selbst wenn eine Bindungskraft der Batterie klein ist, oder selbst wenn ein Mischungsanteil von Partikeln eines aktiven Materials für eine positive Elektrode hoch ist, und eines Verfahrens zur Herstellung eines Verbundpartikels eines aktiven Materials für eine positive Elektrode, einer positiven Elektrode, die den Verbundpartikel eines aktiven Materials für eine positive Elektrode enthält, und einer Festkörperbatterie, die die positive Elektrode enthält. Verbundpartikel eines aktiven Materials für eine positive Elektrode, der Partikel eines aktiven Materials für eine positive Elektrode enthält, die jeweils aus einem lithiumhaltigen Oxid hergestellt sind und eine Oberfläche aufweisen, von der mindestens ein Teil mit einem Beschichtungsmaterial beschichtet ist, das einen Sulfid-Feststoffelektrolyten enthält, und ein Verfahren zur Herstellung des Verbundpartikels ...

Lithium ion cell for secondary battery for commercial applications, has material layer in which material particles in contact with electrolytes and additive are contained, where carbon particles comprise macropores limited by carbon walls

The cell has a positive electrode (1) comprising an active material layer (2) in which active material particles in contact with non-aqueous electrolytes and particulate, porous additive are contained. Porous carbon particles are used as the additive, where porosity of the porous carbon particles lies in a region between 50% and 95%. The porous carbon particles comprise fluidic connected macropores, which are limited by carbon walls with a middle wall thickness within a range of 5 to 500 nm. The active material layer exhibits thickness of 75 nm or more.

LiPON oder LiPSON Festelektrolyt-Schichten und Verfahren zur Herstellung solcher Schichten

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Festelektrolyt-Schichten. Insbesondere wird die Herstellung von Lithiumoxinitrid-Festelektrolyt-Schichten auf der Basis von Phosphat oder einer Kombination von Phosphor und Schwefel beschrieben. Ein Substrat, mindestens ein Reaktivgas, mindestens ein Inertgas und ein Target werden bereitgestellt. Sputtern erfolgt in einer Atmosphäre umfassend mindestens ein Reaktivgas und das mindestens eine Inertgas. Die Festelektrolyt-Schicht wird auf dem mindestens einen Substrat abgeschieden. Das zum Sputtern verwendete Target weist ein Material mit elektrischer Leitfähigkeit auf, das beim Sputtern in eine Inertverbindung überführt wird.

Composite lithium-nickel-cobalt oxide used as positive active material in a secondary lithium ion cell

Composite lithium oxide is produced by co-precipitating a composite Ni-Co hydroxide from a mixed salt solution using aqueous ammonia solution as complexing agent, adding lithium hydroxide and heat treating. A composite lithium oxide of formula LiaNi1-xCoxO2 (I), where a = 0.97 to 1.05 and x = 0.1 to 0.3, is produced by: (a) co-precipitating a composite Ni-Co hydroxide by adding an aqueous ammonia complexing solution and an alkaline pH adjusting solution to an aqueous cobalt and nickel salt solution; (b) adding lithium hydroxide and heat treating at 280-420 deg C; and (c) heat treating the product at 650-750 deg C. Independent claims are also included for the following: (i) a composite lithium oxide having the formula LiaNi1-x-yCoxMyO2 (II), (where M = one or more of Al, Ca, Mg and B, a = 0.97 to 1.05, x = 0.1 to 0.3 and y = 0 to 0.05), and comprising primary particles of rectangular or square structure which are agglomerated to form either spherical secondary particles with a vibrated density ...

Batterieelektroden mit vergrösserter Oberfläche und Verfahren zu ihrer Herstellung

Erfindungsgemäß werden ein Verfahren zur Herstellung von Batterieelektroden und mit diesem Verfahren hergestellte Batterieelektroden zur Verfügung gestellt, wobei das Verfahren das Herstellen von Zusammensetzungen der Elektrodenmassen für Kathoden- bzw. Anodenmasse und gegebenenfalls einer Seperatormasse und das Extrudieren der Elektrodenmasse zum Ausbilden der Anode oder Kathode aus der Elektrodenmasse umfasst, und dadurch gekennzeichnet ist, dass die Elektrodenmasse Isocyanate und eine wässrige Dispersion eines Polymerbinders umfasst, die unter Ausbildung poriger Strukturen miteinander reagieren. Durch das erfindungsgemäße Verfahren entstehenäußerst elastische und zugleich mechanisch stabile Batterieelektroden, die in Lithium-Sekundärbatterien eingesetzt werden können.

Verfahren zur Herstellung von Batterieelektroden und die Verwendung dieser Batterieelektroden zum Herstellen von Sekundär-Lithium-Batterien sowie Batterieelektroden

Verfahren zur Herstellung von Batterieelektroden mit porigen Strukturen, das folgendes umfasst: Herstellen von Zusammensetzungen für Kathoden- oder Anodenmasse Extrudieren der jeweiligen Masse zum Ausbilden der Anode oder Kathode, dadurch gekennzeichnet, dass die Zusammensetzungen für Kathoden- oder Anodenmasse 0,510 Gew.-%, bezogen auf die Elektrodenmasse, Isocyanate, enthaltend Bi-, Tri- und/oder Polyisocyanate, und 115 Gew.-% eines Polymerbinders, bezogen auf die Elektrodenmasse, in Form einer wässrigen Dispersion, umfassen, Extrudieren der Zusammensetzungen bei Temperaturen von 80 bis 180°C, Laminieren bei Drücken von 2·105 Pa bis 1·106 Pa auf Ableiter.

Komposit aus einem elektrisch leitenden Mittel und einem positiven aktiven Material für eine Lithium-Sekundärbatterie, Verfahren zur Herstellung desselben, sowie positive Elektrode und Lithium-Sekundärbatterie enthaltend denselben

VERFAHREN ZUM HERSTELLEN EINER LITHIUM-IONEN-SEKUNDÄRBATTERIE

Method of passive voltage control in a sodium-ion battery

A sodium ion secondary cell has an anode and a cathode, the anode comprising a negative electrode active material on an anode substrate, and the cathode comprising a positive electrode active material on a cathode substrate. The ratio of the mass of the negative electrode active material to the mass of the positive electrode active material, and the value of the first voltage to which the cell is charged in a cycling phase, are selected such that the minimum voltage at the anode when the cell is charged to the first voltage in the cycling phase is sufficient to substantially prevent formation of a metal layer on the anode. The ratio of the mass of the negative electrode active material to the mass of the positive electrode active material, and the value of the first voltage, may also be selected so that the maximum voltage at the cathode in the cycling phase is less than a voltage at which an irreversible loss of cathode charge capacity occurs. This reduces deterioration of the cells performance ...

Improvements relating to electrode structures in batteries

Lithium manganese compounds and methods of making the same

Cathode material and process

Method of manufacturing crystaline material from different materials

Active electrode material

An active electrode material comprises a mixture of (a) at least one lithium titanium oxide and (b) at least one mixed niobium oxide, wherein the mixed niobium oxide is expressed by the general formula [M1]x[M2](1-x)[Nb]y[O]z, wherein 0 ≤ x < 0.5, 0.5 ≤ y ≤ 49 and 4 ≤ z ≤ 124. M1 and M2 are different, where M1 is selected from one or more of P, B, Ti, Mg, V, Cr, W, Zr, Mo, Cu, Fe, Ga, Ge, Ca, K, Ni, Co, Al, Sn, Mn, Ce, Se, Si, Sb, Y, La, Hf, Ta, Zn, In and Cd, and M2 is selected from one or more of P, Mg, V, Cr, W, Zr, Mo, Cu, Fe, Ga, Ge, Ca, K, Ni, Co, Al, Sn, Mn, Ce, Sb, Bi, Sr, Y, La, Hf, Ta, Zn, In and Cd. If x = zero and M2 consists of a single element, then the mixed niobium oxide must be oxygen deficient. In other words, the mixed niobium oxide is adapted, either by cationic substitution due to the presence of both M1 and M2, or by providing a mixed niobium oxide with oxygen depletion. Such materials are of interest as active electrode materials in lithium-ion or sodium-ion batteries ...

Method for the recovery of lithium cobalt oxide from lithium ion batteries

Method for the recovery of lithium cobalt oxide from lithium ion batteries

Method for the recovery of lithium cobalt oxide from lithium ion batteries

CATHODE COMPOSITION FOR A RECRECHARGEABLE LITHIUM BATTERY

ELECTRO-CHEMICAL LITHIUM GENERATOR WITH AT LEAST ONE BIPOLAR ELECTRODE WITH CONDUCTIVE ALUMINIUMODER ALUMINUM ALLOY SUBSTRATES

PROCEDURE FOR THE PRODUCTION OF AN ELECTRODE

ELECTRODE/CSEPARATOR LAMINATE FOR GALVANIC ELEMENTS AND PROCEDURE FOR ITS PRODUCTION

NICHTWÄSSRIGE SECONDARY CELL WITH LIQUID ONE ELECTROLYTES AND VERFAHEN TO THEIR PRODUCTION

AGAIN RECHARGEABLE ONE ELECTRO-CHEMICAL GENERATOR WITH LITHIUM ANODE.

ELECTROLYTIC DIAPHRAGM FOR USE AS FIXED POLYMER ELECTROLYTE IN A RE+RECHARGEABLE BATTERY AND PROCEDURES FOR THE PHOTO NETWORKING ON A CATHODE CURRENT COLLECTOR

STABILIZED ELECTRO-CHEMICAL CELL MATERIAL

LITHIIERTE ELECTRO-CHEMICAL ACTIVE CONNECTIONS AND YOUR PRODUCTION

PROCEDURE FOR the PRODUCTION OF left (1+X) MN (2X) 0 (4+Y) - SPINEL STORAGE CONNECTIONS

Pasty materials with nanocrystalline materials for electrochemical components and layers and electrochemical components produced with said materials

ACTIVATED CATHODES IN LITHIUM-POLYMER BATTERIES CONTAINING FE304 INSTEAD OF CONDUCTIVE CARBON BLACK

Lithium-cobalt composite oxide, method for preparing the same, positive electrode for lithium secondary cell and lithium secondary cell using the same

Lithium polymer energy storage devices and method for the production thereof

Method for producing shaped bodies for lithium ion batteries

PREPARATION METHOD OF NANOSCALE LI-ION COMPOSITE ANODE BY PLASMA JET

Abstract The present invention relates to the technical field of Li-ion batteries and in particular to a preparation method of a nanoscale Li-ion composite anode by plasma jet, comprising the following steps of: (1) preparing and uniformly mixing 15-20% of Li-ion battery anode material, 5-20% of conductive agent and 60-80% of porous carbon material to form a mixture; (2) adding the mixture into a powder feeder; and, (3) coating the mixture onto a current collector at a rate of 5 m/min by a plasma jet technology, where the mixture is coated onto two surfaces and the thickness of the coating is 50-100 pm.

Method of preparing electrode assemblies

Provided herein a method of preparing electrode assemblies for lithium-ion batteries. The method disclosed herein comprises a step of pre-drying separator in the battery manufacturing process before the stacking step, thereby significantly lowering the water content of the separator. Therefore, separators can be used to prepare electrode assemblies regardless of conditions under which they are stored or transported. In addition, the peeling strength between the porous base material and protective porous layer is largely unaffected by the drying process disclosed herein.

Method and apparatus for integrated-battery devices

Nonaqueous secondary cell

LITHIUM MANGANESE COMPOUNDS AND METHODS OF MAKING THE SAME

... ²²²Electrode materials such as LixMnO2 where 0.2 < x <= 2 compounds for use with ²rechargeable lithium ion batteries can be formed by mixing LiMn2O4 compounds ²or manganese dioxide compounds with lithium metal or stabilized and non-²stabilized lithium metal powders.² ...

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

Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes a core and a surface-treatment layer on the core. The core includes at least one lithiated compound and the surface- treatment layer includes at least one coating material selected from the group consisting of coating element included-hydroxides, oxyhydroxides, oxycarbonates, hydroxycarbonates and any mixture thereof.

POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND LITHIUM SECONDARY BATTERY

A positive electrode material for a lithium secondary battery, which is high in safety, high in capacity, excellent in cycle performance, and high in charge/discharge efficiency, is provided. The positive electrode material for a lithium secondary battery is a powder containing a Li-Ni-Co-O or Li-Ni-Co-Ba-O system component as a main component and having an amorphous phase of an oxide mixed in each of particles or formed at the surface of the particle.

PREPARATION OF LITHIUM-CONTAINING MATERIALS

The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions and a method of making such materials. The disclosed method comprises a method of making a lithium mixed metal compound by reaction of starting material which comprises mixing starting materials in particle form with a volatile solvent or binder to form a wet mixture. The starting materials comprise at least one metal containing compound, a lithium compound having a melting point greater than 450.degree.C, and carbon, where said carbon is present in an amount sufficient to reduce the oxidation state of at least one metal ion of said starting materials without full reduction to an elemental state. The method comprises heating said wet mixture in a non-oxidizing atmosphere at a temperature sufficient to form a reaction product which comprises lithium and said reduced metal ion.

MIXED LITHIUM SILICATES

L'invention concerne des silicates mixtes de lithium. Les silicates mixte s ont la formule Li2MII (1 x)MIII xSiO4(OH)x (I) dans laquelle 0<= x<= 1 et M est Fe, Co, Mn ou Ni. Ils sont caractérisés en ce qu'ils sont sous f orme de particules substantiellement sphériques et non coalescées, ayant une dimension de 400 à 600 nm et qu'ils ont une structure dans le groupe d'espa ce Pna21 et éventuellement dans le groupe d'espace Pccn. Les silicates sont obtenus par précipitation en milieu aqueux ô partir de précurseurs. Utilisat ion comme matière active d'électrode pour des dispositifs électrochimiques.

FINELY DEPOSITED LITHIUM METAL POWDER

The present invention provides a method of finely depositing lithium metal powder or thin lithium foil onto a substrate while avoiding the use of a solvent. The method includes depositing lithium metal powder or thin lithium foil onto a carrier, contacting the carrier with a substrate having a higher affinity for the lithium metal powder as compared to the affinity of the carrier for the lithium metal powder, subjecting the substrate while in contact with the carrier to conditions sufficient to transfer the lithium metal powder or lithium foil deposited on the carrier to the substrate, and separating the carrier and substrate so as to maintain the lithium metal powder or lithium metal foil, deposited on the substrate.

AQUEOUS SLURRY FOR BATTERY ELECTRODES

The present invention relates to a slurry or paste for the manufacture of electrodes for secondary batteries such as lithium ion containing electrochemical cells. The slurry comprises a water based binder with CMC, SBR and PVDF as binder materials.

SYNTHESIS OF LIFEPO4 UNDER HYDROTHERMAL CONDITIONS

The present invention relates to a process for the preparation of compounds of general Formula (I) Lia-bM1 bFe1-cM2 cPd-eM3 eOx (I), wherein Fe has the oxidation state +2 and M1, M2, M3, a, b, c, d, e and x are: M1:Na, K, Rb and/or Cs, M2:Mn, Mg, Al, Ca, Ti, Co, Ni, Cr, V, M3:Si, S, F a:0.8 - 1.9, b:0 - 0.3, c:0 - 0.9, 15 d:0.8 - 1.9, e:0 - 0.5, x:1.0 - 8, depending on the amount and oxidation state of Li, M1, M2, P, M3, wherein compounds of general Formula (I) are neutrally charged, comprising the following steps (A) providing a mixture comprising at least one lithium-comprising compound, at least one iron-comprising compound, in which iron has the oxidation state +3, and at least one M1-comprising compound, if present, and/or at least one M2-comprising compound, if present, and/or least one M3-comprising compound, if present, and at least one reducing agent which is oxidized to at least one compound comprising at least one phosphorous atom in oxidation state +5, and (B) heating the mixture ...

ELECTRODE COMPRISING A MODIFIED COMPLEX OXIDE AS ACTIVE SUBSTANCE

L'invention a pour objet une électrode comprenant un support conducteur électrique portant un matériau d'électrode, qui comprend une matière active constituée par des particules d'un oxyde complexe qui portent à leur surface des groupes organiques phosphores fixés par liaison covalente. L'oxyde complexe peut être LiV3O8, LiMn2O4, LiCoO2, LiMPO4 avec M = Fe, Mn ou Co, Li2MSiO4 avec M = Fe, Mn ou Co, LiFeBO3, Li4Ti5O12, LiMn2O4, LiNi1-y-zMnyCozAltO2 (0 < y < 1; 0 < z < 1; 0 < t < 1), V2O5, MnO2, LiFePO4F, Li3V2(PO4)3, et LiVPO4F. L'électrode est utile notamment pour les batteries au lithium.

PREPARATION OF LITHIUM-CONTAINING MATERIALS

The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel lithium-mixed metal materials. Methods for making the novel lithium-mixed metal materials and methods for using such lithium-mixed metal materials in electrochemical cells are also provided. The lithium-mixed metal materials comprise lithium and at least one other metal besides lithium. Preferred materials are lithium-mixed metal phosphates which contain lithium and two other metals besides lithium.

LITHIUM ION SECONDARY BATTERY AND METHOD OF PRODUCING THE SAME

There is provided a method of producing a lithium ion secondary battery. A positive electrode mixture layer is formed on a positive electrode current collector using an aqueous positive electrode mixture paste that includes a positive electrode active material including a lithium manganese composite oxide, and aqueous solvent, and additionally includes Li5FeO4 as an additive.

LIMMOXFY SHELL FORMATION ON CATHODE CERAMIC PARTICLE FOR LI ION BATTERY THROUGH ONIUM METAL OXIDE FLUORIDE PRECURSOR

Disclosed is a process for coating onto a substrate, including preparing a precursor having a general formula Qm/nMOxFy by a reaction M(OH)x + yHF + m/nQ(OH)n ? Qn+m/n(MOxFy)m-, wherein Q is an onium ion, selected from quaternary alkyl ammonium, quaternary alkyl phosphonium and trialkylsulfonium; M is a metal capable of forming an oxofluorometallate, where M may further comprise one or more additional metal, metalloid, and one or more of phosphorus (P), sulfur (S) and selenium (Se), iodine (I) and astatine (As) or a combination thereof, and x>0, y>0, m=1, n=1; combining the precursor with a lithium ion source and with the substrate, and mixing to form a coating composition comprising a lithium oxofluorometallate having a general formula LimMOxFy on the substrate. Further disclosed is a core-shell electrode active material including a core capable of intercalating and deintercalating lithium coated with the lithium oxofluorometallate having the general formula LimMOxFy.

FLEXIBLE ELECTRODE-SEPARATOR ELEMENTS, AND METHOD FOR MANUFACTURING SAME

Ce document décrit un procédé pour la préparation d'éléments ou assemblages électrode-séparateur flexibles, qui inclus l'application d'un matériau d'électrode sur le séparateur. Le matériau d'électrode comprend du graphène, par exemple produit par exfoliation de graphite. Les éléments électrode-séparateur obtenus par le procédé de même que leur utilisation dans des cellules électrochimiques sont aussi décrits.

CATHODE SLURRY FOR LITHIUM ION BATTERY

Provided herein is a lithium-ion battery cathode slurry, comprising: a cathode active material, a conductive agent, a binder material, and a solvent, wherein the cathode active material has a particle size D50 in the range from about 10 µm to about 50 µm, and wherein the slurry coated onto a current collector having a wet film thickness of about 100 µm has a drying time of about 5 minutes or less under an environment having a temperature of about 60 ? to about 90 ? and a relative humidity of about 25% to about 40%. The cathode slurry disclosed herein has homogeneous ingredient dispersion and quick drying capability for making a lithium-ion battery with high quality and consistent performance. In addition, these properties of the cathode slurry increase productivity and reduce the cost of manufacturing lithium-ion batteries.

CATHODE MATERIAL FOR USE IN LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

A cathode material for use in a lithium secondary battery of excellent thermal stability contributing to the improvement of safety of the battery and having large discharging capacity, as well as a method of manufacturing the cathode material for use in the lithium secondary battery, based on the improved method for measuring the thermal stability of the cathode material, the cathode material comprising a compound represented by the chemical formula: Li x Ni y Co z M m O2 in which the material is powdery and the BET specific surface area is 0.8 m2/g or less , M in the chemical formula represents one or more of element selected from Ba, Sr and B, and x, y, z and m are, respectively, 0.9 .ltoreq. x .ltoreq. 1.1, 0.5 .ltoreq. y .ltoreq. 0.95, 0.05 .ltoreq. z .ltoreq. 0.5 and 0.0005 .ltoreq. m .ltoreq. 0.02.

PASTY MATERIALS WITH NANOCRYSTALLINE MATERIALS FOR ELECTROCHEMICAL COMPONENTS AND LAYERS AND ELECTROCHEMICAL COMPONENTS PRODUCED WITH SAID MATERIALS

The invention relates to a pasty material that can be used in electrochemical components comprising (A) 0-70 percent by weight of a matrix containing at least one organic polymer, its precursors or its prepolymers or consisting thereof; (B) 30-100 percent by weight of inorganic material that can be electrochemically activated and that is preferably nonsoluble in the matrix in the form of a solid substance and optionally a suspending agent for (B). The invention is characterized in that the electrochemically activatable material is at least partially a nanocrystalline powder, with the proviso that material (B) is not a material that can be used as electrode material in the absence of (A). Said material is suitable for producing self-supporting layers or layers placed on a substrate, from which or with which layered composites with electrochemical properties such as accumulators, batteries, condensers (supercaps), solar cells and electrochrome display elements can be produced. The invention ...

REDOX SHUTTLE FOR RECHARGEABLE LITHIUM-ION CELL

... ²²²A redox chemical shuttle comprising an aromatic compound substituted with at ²least one tertiary carbon organic group and at least one alkoxy group (for ²example, 2,5-di-tert-butyl-1,4-dimethoxybenzene) provides repeated overcharge ²protection in rechargeable lithium-ion cells.² ...

NONAQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY

A positive electrode of a nonaqueous electrolyte solution secondary battery comprises (A) a lithium-manganese composite oxide and (Bl) at least one lithium-nickel composite oxide which has a specific surface area X of 0.3 <= X(m2/g) and which is selected from a group consisting of LiNiO2, and LiNi1-x M x O2 (0 < × 0.5 is satisfied, and M represents at least one metal element selected from a group consisting of Co, Mn, Al, Fe, Cu and Sr), whereby it is possible to obtain a nonaqueous electrolyte solution secondary battery which is superior in battery properties, especially charge and discharge cycle properties, retention properties and safety.

METHOD AND APPARATUS FOR SOLID-STATE MICROBATTERY PHOTOLITHOGRAPHIC MANUFACTURE, SINGULATION AND PASSIVATION

A method for producing a thin film lithium battery is provided, comprisin g applying a cathode current collector, a cathode material, an anode current collector, and an electrolyte layer separating the cathode material from th e anode current collector to a substrate, wherein at least one of the layers contains lithiated compounds that is patterned at least in part by a photol ithography operation comprising removal of a photoresist material from the l ayer containing lithiated compounds by a process including a wet chemical tr eatment. Additionally, a method and apparatus for making lithium batteries b y providing a first sheet that includes a substrate having a cathode materia l, an anode material, and a LiPON barrier/electrolyte layer separating the c athode material from the anode material; and removing a subset of first mate rial to separate a plurality of cells from the first sheet. In some embodime nts, the method further includes depositing second material on the sheet to cover ...

MULTILAYER MATERIAL, METHOD FOR MAKING SAME AND USE AS ELECTRODE

Material) multi-couches comportant un support solide et au moins deux couches solides superposees qui contiennent des particules d'un materiau electrochimiquement actif, Ia premiere couche solide adhere au support solide et Ia deuxieme couche solide adhere a Ia premiere couche solide. Ce materiau multi-couches presente une Constance d'epaisseur de couche superieure ou egale a 95% et une profondeur de penetration de Ia deuxieme couche dans Ia premiere couche qui est inferieure a 10 % de I'epaisseur de Ia premiere couche, et il permet, comme element constitutif d'electrode, de preparer des generateurs presentant un faible risque de degradation en surcharge.

PULVERULENT COMPOUNDS, A PROCESS FOR THE PREPARATION THEREOFAND THE USE THEREOF IN LITHIUM SECONDARY BATTERIES

The present invention relates to pulverulent compounds of the formula Lia NibM1cM2d (0)2 (SO4) x, a process for preparation thereof and the use thereo f as active electrode material in.

FABRICATING METHOD OF ELECTRODE ADHESIVE BICELL

A method for manufacturing an electrode adhesive bicell comprises steps of forming a solid state positive electrode film; forming a solid state negative electrode film; mixing polymer adhesive, a filler and two solvents of different boiling points as a mixing material; the mixing material being coated upon two opposite surfaces of a porous membrane as a coated object; the coated object being then dried as a separator membrane; the two solvents of differe nt boiling points serving to solving the polymer adhesive; after the solvent of lower boiling point is evaporated, the other solvent of high boiling point i s retained as a gel with good adhesive and plasticity for the combination of solid state positive electrode film and solid state negative electrode film.

SYNTHESIS AND CHARACTERIZATION OF LITHIUM NICKEL MANGANESE COBALT PHOSPHOROUS OXIDE

Disclosed herein are certain embodiments of a novel chemical synthesis route for lithium ion battery applications. Accordingly, various embodiments are focused on the synthesis of a new active material using NMC (Lithium Nickel Manganese Cobalt Oxide) as the precursor for a phosphate material having a layered crystal structure. Partial phosphate generation in the layer structured material stabilizes the material while maintaining the large capacity nature of the layer structured material. Materials having a composition represented by: Lix Ni1/4 Mn1/4 Co1/4 P(1/4-y )O2,wherein 0=x=1, 0.001=y=0.25 and by: LixX(2/3+y)P(1/3-y)O2,wherein 0=x=1, 0.001=y=0.33, and X is Nickel or a combination of transition metal elements, can be prepared.

POSITIVE ELECTRODE ACTIVE SUBSTANCE PARTICLES FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES AND PROCESS FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

The purpose of the present invention is to provide: a positive electrode active substance particle powder that is for a non-aqueous electrolyte secondary battery and that has excellent direct current resistance characteristics at low temperatures; a production method therefor; and a non-aqueous electrolyte secondary battery. The present invention relates to a positive electrode active substance particle powder that is for a non-aqueous electrolyte secondary battery and that contains tungsten oxide particles and lithium composite oxide particles having a layered rock salt structure that comprises at least Li combined with one element selected from among Ni, Co, and Mn. The positive electrode active substance particle powder for a non-aqueous electrolyte secondary battery is characterized in that: 0.1-4.0 mol% of W is present with respect to the total molar amount of Ni, Co, and Mn within the lithium composite oxide; and the average secondary particle size of the tungsten oxide particles ...

POSITIVE-ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY AND METHOD OF PRODUCING SAME

The present invention provides a positive-electrode material, for a lithium-ion secondary battery using olivine-type lithium iron phosphate, which has a low electric resistance, is capable of increasing the capacity of the battery when the battery is charged and discharged at a high current, and allows the battery to be charged and discharged for a long time and have a long life. A positive-electrode material contains a lithium-containing metal phosphate compound, carbon black, and a fibrous carbon material. The lithium-containing metal phosphate compound is coated with a carbon material and has at least one phase selected from among a graphene phase and an amorphous carbon phase formed on a surface thereof. The fibrous carbon material contains at least two kinds of the fibrous carbon materials. At least two kinds of the fibrous carbon materials have different fiber diameters or fiber lengths.

LITHIUM IRON PHOSPHATE CATHODE MATERIAL AND METHOD FOR PRODUCING SAME

The present invention provides a lithium iron phosphate positive electrode material exhibiting excellent electron conductivity and lithium ion conductivity as a consequence of coating carbon using little carbon materials, in other words, exhibiting excellent properties for the use as electrode materials. The present invention also provides a method for producing said lithium iron phosphate positive electrode material. A lithium iron phosphate positive electrode material (10) having lithium iron phosphate primary particles (11) provided with a conductive carbon coating layer (13), the conductive carbon coating layer being characterized by having a thick layer part (13a) having a thickness of 2 nm or more and a thin layer part (13b) having a thickness of less than 2 nm.

METHOD FOR MANUFACTURING OF SLURRY FOR PRODUCTION OF BATTERY FILM

The present invention deals with a process for description of a slurry for coating of electrodes for use in lithium ion batteries, where the process as a minimum comprises the steps of a) mix (1) active materials (A) with a binder (B) into a binder solution, and b) add (1) an organic carbonate (C) to a binder solution so that a slurry is generated and the invention is comprising a method for generation of electrodes for a lithium battery cell, where the procedure as a minimum comprises the steps of a) mix (1) active materials (A) with a binder (B) with a binder solution b) add (1) an organic carbonate (C) into a binder solution so that a slurry is generated, c) coat (2) an electrode material (D) with the slurry, d) evaporate/ dry (3) the coating of the electrode material meaning that the organic carbonate (C) is steamed/ dried, and e) surface finishing (5,6,7) the slurry so that the electrode is prepared for use in a lithium ion battery cell. Finally the invention states a procedure for ...

Method for Increasing the Reversible Capacity of Lithium Transition Metal Oxide Cathodes

Lithium Secondary Battery

POSITIVE ELECTRODE MATERIAL FOR USE IN NON-AQUEOUS ELECTROLYTE BATTERY, PROCESS FOR PREPARING THE SAME, AND NON-AQUEOUS ELECTROLYTE BATTERY

A non-aqueous electrolyte battery according to the invention includes a positive electrode using a lithium- metal compound oxide as a positive electrode material, a negative electrode and a non-aqueous electrolyte solution, the battery employing a positive electrode material composed of the lithium-metal compound oxide which contains at least Ni, Co and Mn, and has a peak with a full width at half maximum of not greater than 0.22.degree. in a range of 2.theta.=18.71 0.25.degree. as measured by the powder X-ray diffraction analysis using a Cu-K.alpha. X-ray source or employing a positive electrode material composed of a lithium-metal compound oxide which contains at least Ni, Co and Mn, and a non- aqueous electrolyte solution which includes a solvent containing ethylene carbonate and a solute containing at least one type of fluorine-containing compound.

METHOD FOR MAKING LITHIATED MANGANESE OXIDE

The invention is a process which provides a high purity lithiated manganese oxide (Li1+xMn2-yO4) from chemically made MnO2. The lithiated manganese oxide has an especially effective utility for use as a cathodic material in rechargeable batteries. The process of the invention includes blending a lithium compound with a chemically made manganese dioxide to form a manganese dioxide/lithium compound blend. The lithium compound in the blend is at least about one mole of lithium for every mole of manganese dioxide. The manganese dioxide and lithium compound in the blend undergo an ion exchange reaction to provide an ion replaced product where lithium ions have replaced sodium and potassium ions in the MnO2 to form an ion replaced product. Thereafter, the ion replaced product is heated or calcined to provide the lithiated manganese oxide.

POLYIMIDE BATTERY

A battery having at least one anode (14), at least one cathode (15), and at least one electrolyte (16) disposed between the anode and the cathode is presented. Each anode (14) comprises an anode current collector (11) and an anode composite material (21) which includes a first, soluble, amorphous thermoplastic polyimide, an electronic conductive filler, and an intercalation material. Each cathode (15) comprises a cathode current collector (12) and a cathode composite material (22) which includes a second soluble, amorphous, thermoplastic polyimide, an electronic conductive filler, and a metal oxide. Lastly, each electrolyte (16) comprises a third soluble amorphous, thermoplastic polyimide and a lithium salt. The process for preparing the battery comprises the steps of preparing an anode slurry, a cathode slurry, and an electrolyte solution; casting a film of the electrolyte solution to form an electrolyte layer; coating each of the anode slurry and the cathode slurry on respective current ...

Vorrichtung zur Herstellung eines Energiespeichers, der eine elektrochemische Zelle enthält.

Eine Vorrichtung (10) zur Herstellung eines Energiespeichers (5) umfasset eine Mehrzahl von Modulen, wobei die Module ein erstes Elektrodenmodul, ein zweites Elektrodenmodul und ein Stapelmodul umfassen. Der Energiespeicher umfasst eine Zelle (8), wobei die Zelle (8) einen ersten Ableiter (40), eine erste Elektrode (1), eine zweite Elektrode (2), einen zweiten Ableiter (50) und eine Trennschicht (20) enthält, wobei die Trennschicht zwischen der ersten Elektrode (1) und der zweiten Elektrode (2) angeordnet ist, wobei der erste Ableiter (40) auf einer der Trennschicht (20) gegenüberliegenden Seite der ersten Elektrode (1) angeordnet ist, wobei der zweite Ableiter (50) auf einer der Trennschicht (20) gegenüberliegenden Seite der zweiten Elektrode (2) angeordnet ist. Das erste Elektrodenmodul umfasst eine erste Siebdruckvorrichtung (41) zur Herstellung der ersten Elektrode (1) und das zweite Elektrodenmodul umfasst eine zweite Siebdruckvorrichtung (42) zur Herstellung der zweiten Elektrode ...

COMPOSITION ON THE BASE OF THE OXIDE OF METALLIC LITHIUM (VERSIONS), THE METHOD OF THEIR PRODUCTION AND THEIR APPLICATION

КОМПОЗИЦИИ НА БАЗЕ ОКСИДА МЕТАЛЛИЧЕСКОГО ЛИТИЯ (ВАРИАНТЫ), СПОСОБ ИХ ИЗГОТОВЛЕНИЯ И ИХ ПРИМЕНЕНИЕ

В изобретении предложена композиция, имеющая формулу LixMgyNiO2, в которой 0,9<х<1,3, 0,01<у<0,1 и 0,91<х+у<1,3, которая может быть использована в качестве материала катода в гальванических элементах. Композиция, которая имеет сердцевину, имеющую формулу LixMgyNiO2, в которой 0,9<х<1,3, 0,01<у<0,1 и 0,9<х+у<1,3, и покрытие на сердцевине, имеющее формулу LiaCobO2, в которой 0,7<а<1,3 и 0,9 Подробнее

СПОСІБ ОТРИМАННЯ ЛІТІЄВОЇ БАТАРЕЇ

Спосіб отримання літієвої батареї, яка містить електрохімічний активний матеріал, анод, сепаратор і неводний електроліт.

CONTAINING LITIIMARGANETsOKSIDINTERKALYaTsIONNYE COMPOUNDS OF LITHIUM

FLEXIBLE ELECTRODE-SEPARATOR ELEMENTS, AND METHOD FOR MANUFACTURING SAME

Anode material--lithium nickelate cobalt for lithium ion battery and preparation method thereof

The invention is a method of preparing lithium ion cell anode material-nickel cobalt acid lithium, and its characteristic: in the proportion of its formula, A-group matters: water-soluble lithium salt which is one of the lithium chloride, lithium sulphate, lithium nitrate and lithium acetate, water cobalt salt which is one of the cobalt chloride, cobalt sulphate, cobalt nitrate and cobalt acetate, and water nickel salt which is one of the nickel chloride, nickel sulphate, nickel nitrate and nickel acetate, the molar ratio of the three matters is 1.00-1.1 : 0.2-0.3 : 0.8-0.7; B-group matters: complexant is one of the oxalic acid, tartaric acid, citric acid, succinic acid, malonic acid, and maleic acid; the molar ratio of A to B is 1.0 : 0.6 -0.8; C-group polymers: gelatin, modified starch and polyvinyl alcohol. The beneficial effects: it can effectively reduce cost and the made LiNi1-yCoyO2 has the advantages of both LiCoO2 and LiNiO2, i.e. easy to synthesize, stable-property, high-specific ...

Preparation method for similar graphene doped lithium ion battery positive electrode material

The invention discloses a preparation method for a similar graphene doped lithium ion battery positive electrode material. The method comprises the following steps: stirring a liquid oligoacrylonitrile solution at the temperature of 80-300 DEG C for 8-72 hours to form a micro cyclized LPAN (porous ammonium nitrate granules) solution; adding a certain amount of lithium ion battery positive electrode material powder to the micro cyclized LPAN solution, and uniformly mixing; drying at room temperature after grinding; and calcining at the temperature of 500-1800 DEG C for 6-24 hours under the protection of inert gas, wherein the micro cyclized LPAN forms a similar graphene structure and is uniformly undistributed in the lithium ion battery positive electrode material, thereby acquiring the similar graphene doped lithium ion battery positive electrode material. The similar graphene doped lithium ion battery positive electrode material acquired by the method not only has high conductivity and ...

LITHIUM-ION BATTERY FOR VEHICLE AND THE MANUFACTURING METHOD OF THE SAME

Method for confecting lithium ion battery anode sizing agent

METHOD OF PREPARING CATHODE FOR SECONDARY BATTERY

Polyimide battery

Method for producing lithium transition metalates

Surface coating method and a method for reducing irreversible capacity loss of a lithium rich transitional oxide electrode

NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE ELEMENT AND METHOD FOR PRODUCING SAME

METHOD OF MANUFACTURING LITHIUM ION SECONDARY BATTERY

Sodium ion secondary battery

The positive electrode active material of a positive electrode includes a sodium-containing transition metal oxide (NaaLibMxO2+-alpha). The M includes at least two of manganese (Mn), iron (Fe), cobalt (Co), and nickel (Ni). For a negative electrode, a sodium metal or a metal that forms an alloy with sodium is used. A non-aqueous electrolyte produced by dissolving an electrolytic salt (sodium salt) in a non-aqueous solvent is used. Examples of the non-aqueous solvent may include a cyclic carbonate, a chain carbonate, esters, cyclic ethers, chain ethers, nitrites, amides and a combination thereof.

Carbon nanotube composite lead carbon battery negative electrode plate and preparation method

Electrode composite material, method for making the same, and lithium ion battery using the same

An anode composite material includes an anode active material particle having a surface and a continuous aluminum phosphate layer. The continuous aluminum phosphate layer is coated on the surface of the anode active material particle. The present disclosure also relates to a lithium ion battery that includes the cathode composite material.

Electroactive material, and use thereof in anodes for lithium-ion cells

The present invention relates to a novel electroactive material which comprises a graphitic carbon phase C and a (semi)metal phase and/or a (semimetal) oxide phase (MO x phase) and also to the use of the electroactive material in anodes for lithium ion cells. The invention further relates to a process for producing such materials. The electroactive material comprises: a) a carbon phase C; b) at least one MO x phase, where M is a metal or semimetal, x is from 0 to <k/2, where k is the maximum valence of the metal or semimetal. In the electroactive material of the invention, the carbon phase C and the MO x phase form essentially co-continuous phase domains, with the average distance between two neighboring domains of identical phases being not more than 10 nm, in particular not more than 5 nm and especially not more than 2 nm.

Negative active materials, lithium ion batteries, and methods thereof

Methods of preparing negative active materials and negative active materials are provided herein. The preparation methods include: A) mixing a carbon material, an organic polymer, a Sn-containing compound—optionally with water—to obtain a mixed solution system; B) adding a complexing agent into the mixed solution system obtained in step A optionally while stirring to form an intermediate solution; C) adding a reducing agent into the intermediate solution obtained in step B to a reaction product; D) optionally filtering, washing and then drying the reaction product to obtain the negative active material.

Organic/inorganic composite electrolyte and electrochemical device prepared thereby

The present invention relates to a method for manufacturing an electrode having an organic/inorganic composite porous coating layer comprising porous inorganic particles and a binder polymer, wherein the porous inorganic particles have pores having such a size that lithium ions (Li + ) solvated in an electrolyte solvent can pass therethrough. The method comprises the steps of dispersing inorganic precursors and heat-decomposable compounds in a dispersion medium, misting the inorganic precursor solution, and performing a thermal decomposition and a crystallization processes, to thereby prepare porous inorganic particles, adding and mixing the porous inorganic particles to a polymer solution in which a binder polymer is dissolved, and coating the mixture onto a preliminarily formed electrode and drying the coating layer.

Lithium ion rechargeable batteries & the additive for lithium ion rechargeable batteries which prevents increase of the viscosity

The preparation of a slurry so as to exhibit no strong alkalinity not only needs a strict pH control, but also needs once dispersing a positive electrode material in water and the operation of drying after the treatment, and other operations, thereby leading to the complication of the operations and a decrease in the yield. In consideration of the above-mentioned problems, the present invention provides a method for producing a positive electrode plate for a lithium ion rechargeable battery, which exhibits less complication of the operations and less decrease in the yield and can prevent the gelation of a positive electrode material slurry. The above-mentioned problems can be solved by a positive electrode for a lithium ion rechargeable battery containing a positive electrode active material capable of absorbing/desorbing lithium ions, a nitrile group-containing polymer, and a binder.

Method of forming a solid state cathode for high energy density secondary batteries

A method for making a solid state cathode comprises the following steps: forming an alkali free first solution comprising at least one transition metal and at least two ligands; spraying this solution onto a substrate that is heated to about 100 to 400° C. to form a first solid film containing the transition metal(s) on the substrate; forming a second solution comprising at least one alkali metal, at least one transition metal, and at least two ligands; spraying the second solution onto the first solid film on the substrate that is heated to about 100 to 400° C. to form a second solid film containing the alkali metal and at least one transition metal; and, heating to about 300 to 1000° C. in a selected atmosphere to react the first and second films to form a homogeneous cathode film. The cathode may be incorporated into a lithium or sodium ion battery.

Thin film buried anode devices

A reverse configuration, lithium thin film battery ( 300 ) having a buried lithium anode layer ( 305 ) and process for making the same. The present invention is formed from a precursor composite structure ( 200 ) made by depositing electrolyte layer ( 204 ) onto substrate ( 201 ), followed by sequential depositions of cathode layer ( 203 ) and current collector ( 202 ) on the electrolyte layer. The precursor is subjected to an activation step, wherein a buried lithium anode layer ( 305 ) is formed via electroplating a lithium anode layer at the interface of substrate ( 201 ) and electrolyte film ( 204 ). The electroplating is accomplished by applying a current between anode current collector ( 201 ) and cathode current collector ( 202 ).

Positive Active Material for Rechargeable Lithium Battery, Method of Manufacturing the Same and Rechargeable Lithium Battery Using the Same

A positive active material for a rechargeable lithium battery includes a positive active material compound including a metal compound for intercalating and deintercalating lithium, a coating particle having an embedded portion embedded into the active material compound and a protruding portion protruding from the surface of the active material, and a rechargeable lithium battery including the positive active material.

Electrode for rechargeable lithium battery and rechargeable lithium battery including the same

An electrode for a rechargeable lithium battery includes an electrode active material and a copolymer represented by where A is selected from —O—(CFR f3 —CFR f4 )—, —(CFR f4 —CFR f5 )— and combinations thereof, each of R f1 through R f5 is independently selected from fluorine, C1-C4 alkyls and C1-C4 fluorinated alkyls, and each of x and y is an integer ranging from 1 to 100,000.

Positive electrode active material for lithium secondary battery and use thereof

The present invention discloses a method for producing a positive electrode active material for a lithium secondary battery constituted by a lithium-nickel-cobalt-manganese complex oxide with a lamellar structure, the method including: (1) a step of preparing a starting source material for producing the complex oxide including a lithium supply source, a nickel supply source, a cobalt supply source, and a manganese supply source; (2) a step of pre-firing the starting source material by heating at a pre-firing temperature that has been set to a temperature lower than 800° C. and higher than a melting temperature of the lithium supply source; and (3) a step of firing the pre-fired material obtained in the pre-firing step by raising a temperature to a temperature range higher than the pre-firing temperature.

Composite, electrode active material for secondary lithium battery including the composite, method of preparing the composite, anode for secondary lithium battery including the electrode active material, and secondary lithium battery including the anode

A composite includes a compound selected from the group consisting of a lithium lanthanum zirconium oxide and a lithium lanthanum tantalum oxide; a lanthanum oxide; and an oxide selected from the group consisting of a lanthanum zirconium oxide and a lanthanum tantalum oxide. An electrode active material for a secondary lithium battery may include such composite. Methods of preparing the composite, an electrode for a secondary lithium battery including the electrode active material, and a secondary lithium battery including the electrode are disclosed.

Method for manufacturing positive electrode and power storage device

To suppress decomposition of lithium cobalt oxide and formation of a decomposition product. To suppress the reaction between oxygen in lithium cobalt oxide and a current collector. To obtain a power storage device having high charge and discharge capacity. In a method for manufacturing a power storage device, in forming a lithium cobalt oxide layer over a positive electrode current collector by a sputtering method using a target containing lithium cobalt oxide and a sputtering gas containing Ar, the positive electrode current collector is heated at a temperature at which c-axes of crystals of lithium cobalt oxide are aligned and cobalt oxide is not formed. The heating temperature of the positive electrode current collector is higher than or equal to 400° C. and lower than 600° C.

Production process for composite oxide, positive-electrode active material for lithium-ion secondary battery and lithium-ion secondary battery

A composite oxide, whose major component is a lithium-manganese-system oxide including Li and tetravalent Mn at least and having a crystal structure that belongs to a layered rock-salt structure, is produced via the following: a raw-material mixture preparation step of preparing a raw-material mixture by mixing a metallic-compound raw material and a molten-salt raw material with each other, the metallic-compound raw material at least including one or more kinds of metallic compounds being selected from the group consisting of oxides, hydroxides and metallic salts that include one or more kinds of metallic elements in which Mn is essential, the molten-salt raw material including lithium hydroxide and lithium nitrate, and exhibiting a proportion of the lithium hydroxide with respect to the lithium nitrate (i.e., (Lithium Hydroxide)/(Lithium Nitrate)) that falls in a range of from 1 or more to 10 or less by molar ratio; a molten reaction step of reacting said raw-material mixture at a melting point of said molten-salt raw material or more by melting it: and a recovery step of recovering said composite oxide being generated from said raw-material mixture that has undergone the reaction.

Method for preparing lithium manganese oxide positive active material for lithium ion secondary battery, positive active material prepared thereby, and lithium ion secondary battery including the same

A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.

Positive electrode material for a lithium-ion accumulator

A compound of formula Li a+y (M 1 (1−t) Mo t ) 2 M 2 b (O 1−x F 2x ) c wherein: M 1 is selected from the group consisting in Ni, Mn, Co, Fe, V or a mixture thereof; M 2 is selected from the group consisting in B, Al, Si, P, Ti, Mo; with 4≦a≦6; 0<b≦1.8; 3.8≦c≦14; 0≦x<1; −0.5≦y≦0.5; 0≦t≦0.9; b/a<0.45; the coefficient c satisfying one of the following relationships: c=4+y/2+z+2t+1.5b if M 2 is selected from B and Al; c=4+y/2+z+2t+2b if M 2 is selected from Si, Ti and Mo; c=4+y/2+z+2t+2.5b if M 2 is P; with z=0 if M 1 is selected from Ni, Mn, Co, Fe and z=1 if M 1 is V.

Method for manufacturing a lithium complex metal oxide

A method for producing a lithium mixed metal oxide, which includes mixing a lithium compound, metallic Ni or a compound thereof, and one or more transition metals selected from the group consisting of Mn, Co, Ti, Cr and Fe or a compound thereof; and calcining the obtained raw material mixture under an atmosphere of the concentration of carbon dioxide of from 1% by volume to 15% by volume at 630° C. or higher.

Positive electrode active material for lithium ion battery, method for producing the same, positive electrode for lithium ion battery, and lithium ion battery

A positive electrode active material for a lithium ion battery includes a material represented by chemical formula LiMPO 4 where M includes at least one of iron, manganese, cobalt, and nickel. Particles of the positive electrode active material have a diameter d in the range of 10 nm to 200 nm, the diameter d being determined by observation under a transmission electron microscope. A ratio d/D of the diameter d to a crystallite diameter D is in the range of 1 to 1.35, the crystallite diameter D being determined from a half width measured by X-ray diffraction. The positive electrode active material is coated with carbon, an amount of the carbon being in the range of 1 weight percent to 10 weight percent.

Method for reducing activation of lithium secondary battery and lithium secondary battery having reduced activation

A method for reducing activation of lithium secondary battery including at least a cathode comprising micron-sized particles of a compound having the formula C-A x M(XO 4 ) y which have an olivine structure and which carry, on at least a portion of their surface, a deposit of carbon deposited by pyrolysis, the formula A x M(XO 4 ) y being such that: A includes Li; M includes Fe(II) or Mn(II) or a mixture thereof; XO 4 includes PO 4 ; and O<x≦2 et O<y≦2, the coefficients x and y being chosen independently so as to ensure electroneutrality of the A x M(XO 4 ) y compound, the method including performing at least one charge and/or discharge cycle of the battery at a temperature above about 30° C. Also, a lithium secondary battery having the above characteristics and which has a substantially constant capacity within the first hundred (100) charge and/or discharge cycles.

Lithium ion battery

The present disclosure relates to a lithium ion battery. The lithium ion battery cathode includes a cathode, a separator, an anode, and a nonaqueous electrolyte solution. The cathode includes a cathode current collector and a cathode material layer disposed on a surface of the cathode current collector. The cathode material layer comprises cathode active material, conductive agent, and adhesive uniformly mixed together. The cathode active material comprises cathode active material particles and AlPO 4 layers coated on surfaces of the cathode active material particles. The separator includes a porous membrane and a protective layer coated on a surface of the porous membrane. The protective layer prevents the separator from being melted during charging or discharging of the lithium ion battery.

Negative active material, negative electrode including the same, lithium secondary battery including negative electrode, and method of preparing negative active material

A negative active material comprising lithium titanate oxide having an area ratio of a diffraction peak of a (111) plane that appears at 2θ-18.3°±0.4 to a diffraction peak of a (311) plane that appears at 2θ=35.5°±0.4, in an XRD spectrum, in the range of about 2.2:1 to about 5.5:1, a negative electrode comprising the negative active material, a lithium secondary battery comprising the negative electrode, and a method of preparing the negative active material.

Multiple inorganic compound structure and use thereof, and method of producing multiple inorganic compound structure

In a multiple inorganic compound structure according to the present invention, elements included in a main crystalline phase and elements included in a sub inorganic compound are present in at least a first region and a second region, the first region and the second region each have an area of nano square meter order, the first region is adjacent to the second region, and the first region and the second region each include an element of an identical kind, which element of the identical kind present in the first region has a concentration different from that of the element of the identical kind present in the second region.

Cathode active material composition, cathode prepared by using the same, and lithium battery including the cathode

A cathode active material composition includes a cathode active material, a water-based binder, and a transition metal oxide. A cathode is prepared using the cathode active material composition. A lithium battery includes the cathode. The lithium battery has improved high-rate characteristics and lifespan characteristics by preventing an increase in internal resistance due to the corrosion of an electrode base material.

Battery electrode production method

The present invention provides a method for producing a battery electrode having a configuration in which a compound material layer containing an active material 22 and a binder 54 is retained on a current collector 10 . This method includes a step of forming protrusions 64 composed of a polymer on a surface of the current collector 10 , a step of forming a binder solution layer 56 by coating a binder solution 50 containing the binder 54 over the polymer protrusions 64 onto the current collector 10 , a step of depositing the binder solution layer 56 and a compound material paste layer 46 on the current collector 10 by applying a compound material paste 40 containing the active material 22 over the binder solution layer 56 , and a step of obtaining an electrode in which the compound material layer is formed on the current collector 10 by drying both the deposited binder solution layer 56 and compound material paste layer 46.

Positive-electrode material for lithium secondary-battery, process for producing the same, positive electrode for lithium secondary battery, and lithium secondary battery

The invention relates to: a lithium-transition metal compound powder for a positive-electrode material of lithium secondary batteries, which is a powder that comprises a lithium-transition metal compound having a function of being capable of an insertion and elimination of lithium ions, wherein the particles in the powder contain, in the inner part thereof, a compound that, when analyzed by an SEM-EDX method, has peaks derived from at least one element selected from the Group-16 elements belonging to the third or later periods of the periodic table and at least one element selected from the Group-5 to Group-7 elements belonging to the fifth and sixth periods of the periodic table; a process for producing the powder; a positive electrode for lithium secondary batteries; and a lithium secondary battery.

Nonaqueous electrolyte battery, battery pack and vehicle

A nonaqueous electrolyte battery includes a negative electrode including a current collector and a negative electrode active material having a Li ion insertion potential not lower than 0.4V (vs. Li/Li + ). The negative electrode has a porous structure. A pore diameter distribution of the negative electrode as determined by a mercury porosimetry, which includes a first peak having a mode diameter of 0.01 to 0.2 μm, and a second peak having a mode diameter of 0.003 to 0.02 μm. A volume of pores having a diameter of 0.01 to 0.2 μm as determined by the mercury porosimetry is 0.05 to 0.5 mL per gram of the negative electrode excluding the weight of the current collector. A volume of pores having a diameter of 0.003 to 0.02 μm as determined by the mercury porosimetry is 0.0001 to 0.02 mL per gram of the negative electrode excluding the weight of the current collector.

Anode material for lithium-ion chemical current sources and method of obtaining thereof

An anode material is based on lithium-titanium spinel that contains doping components, chromium and vanadium, in equivalent quantities, of the chemical formula Li 4 Ti 5-2y (Cr y V y )O 12-x , where x is the deviation from stoichiometry within the limits 0.02<x<0.5, and y is the stoichiometric coefficient within the limits 0<y<0.1. Producing the anode material involves preparation of a mixture of the initial components that contain lithium and titanium and sources of dopants, chromium and vanadium, by means of homogenization and pulverization, which is carried out until particles no greater than 0.5μ in size are obtained, with subsequent stepwise heat treatment of the prepared mixture in a controlled atmosphere of inert argon and reducing acetylene, at a ratio of the gases in the argon-acetylene stream from 999:1 to 750:250, respectively.

Electrode active material, electrode comprising the same, lithium battery comprising the electrode, and method of preparing the electrode active material

An electrode active material, an electrode including the electrode active material, a lithium battery including the electrode, and a method of preparing the electrode active material. The electrode active material includes a core having at least one of a metal or a metal oxide that enables intercalation and deintercalation of lithium ions and a crystalline carbon thin film that is formed on at least a portion of a surface of the core. The electrode active material has a nano-structure.

Nonaqueous electrolyte battery and battery pack

According to one embodiment, a nonaqueous electrolyte battery includes a nonaqueous electrolyte, a positive electrode, a negative electrode and a separator. The nonaqueous electrolyte includes an asymmetric sulfone-based compound and a symmetric sulfone-based compound. The positive electrode includes a composite oxide represented by Li 1−x Mn 1.5−y Ni 0.5−z M y+z O 4 ( 0 ≦x≦ 1, 0 ≦y+z≦ 0.15 , and M is at least one kind of element selected from the group consisting of Mg, Al, Ti, Fe, Co, Ni, Cu, Zn, Ga, Nb, Sn, Zr and Ta). The negative electrode includes a Ti-containing oxide which is capable of absorbing and releasing lithium. The separator includes a nonwoven fabric.

Negative-electrode material powder for lithium-ion secondary battery, negative electrode for lithium-ion secondary battery, negative electrode for capacitor, lithium-ion secondary battery, and capacitor

Provided is a negative-electrode material powder used for a lithium-ion secondary battery having a large discharge capacity and sufficient cycle characteristics as being durable in use. The powder for the battery includes a conductive carbon film on a lower silicon oxide powder, surface and satisfies requirements that: Si in SiC is 15.1 wt % or less in content, or A3 (=A2−A1) is 15.1 or less, given A1 (wt %): Si content measured by acid solution process, and A2 (wt %): Si content measured by alkali solution process; and a specific resistance is 30,000 Ωcm or less. In the lower silicon oxide powder, a maximum value P1 of SiO x -derived halos appearing at 2θ=10° to 30° and a value P2 of the strongest line peak of Si (111) appearing at 2θ=28.4±0.3°, in XRD using CuKα beam, preferably satisfy P2/P1<0.01. The content of tar component is preferably 1 ppm or more and 4,000 ppm or less.

Lead manganese-based cathode material for lithium electrochemical systems

A lead manganese-based cathode material is provided. Furthermore, a lithium or lithium ion rechargeable electrochemical cell is provided incorporating lead manganese-based cathode material in a positive electrode. In addition, a process for preparing a stable lead manganese-based cathode material is provided.

Lithium-titanium complex oxide and manufacturing method thereof, as well as battery electrode and lithium ion secondary battery using the same

A lithium-titanium complex oxide, which exhibits high effective capacity and high rate characteristics, has a particle size distribution as measured by the laser diffraction method such that the maximum particle size (D100) is 20 μm or less, average particle size D50 is 1.0 to 1.5 μm, total frequency of particles whose particle size is greater than twice the average particle size D50 is 16 to 25%, and preferably the specific surface area as measured by the BET method is 6 to 14 m 2 /g, and preferably the angle of repose is 35 to 50°.

Positive electrode for lithium secondary battery, and lithium secondary battery employing the same

The invention relates to positive electrode for lithium secondary battery which comprises an active material and a conductive material, wherein the active material comprises a lithium-transition metal compound which has a function of being capable of insertion and desorption of lithium ion, the lithium-transition metal compound gives a surface-enhanced Raman spectrum which has a peak at 800-1,000 cm −1 , and the conductive material comprises carbon black which has a nitrogen adsorption specific surface area (N 2 SA) of 70-300 m 2 /g and an average particle diameter of 10-35 nm, and a lithium secondary battery which employs the same.

Lithium cell having an improved cathode structure and production method for it

A lithium cell is described having a cathode structure made of a base material which conducts electrons and Li ions. The cathode structure includes a continuous substrate, which provides a continuous base area, starting from which a plurality of crosspieces extends. The crosspieces provide crosspiece surfaces, starting from which carrier structures extend. The carrier structures provide carrier surfaces on which active material is distributed. In addition, an accumulator is also described in which a plurality of lithium cells is stacked. A method for producing a lithium cell is also described.

Positive electrode materials for lithium ion batteries having a high specific discharge capacity and processes for the synthesis of these materials

Positive electrode active materials are described that have a very high specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. Some materials of interest have the formula Li 1+x Ni 60 Mn β Co γ O 2 , where x ranges from about 0.05 to about 0.25, α ranges from about 0.1 to about 0.4, β range's from about 0.4 to about 0.65, and γ ranges from about 0.05 to about 0.3. The materials can be coated with a metal fluoride to improve the performance of the materials especially upon cycling. Also, the coated materials can exhibit a very significant decrease in the irreversible capacity lose upon the first charge and discharge of the cell. Methods for producing these materials include, for example, a co-precipitation approach involving metal hydroxides and sol-gel approaches.

COATING AND LITHIATION OF INORGANIC OXIDANTS BY REACTION WITH LITHIATED REDUCTANTS

A method for producing conductive carbon coated particles of an at least partially lithiated electroactive core material comprises the step of premixing an oxidant electroactive material with a metallated reductant followed by chemically reacting the oxidant electroactive material with the metallated reductant, said reductant being a coating precursor, said metal being at least one alkaline and/or at least one alkaline earth metal, and said chemically reacting being performed under conditions allowing reduction and metallation of the electroactive material via insertion/intercalation of the alkaline metal cation(s) and/or the alkaline earth metal cation(s) and coating formation via a polymerisation reaction like polyanionic or radicalic polymerisation of the reductant. 1. A method for producing conductively coated particles comprising an at least partially metallated electroactive core material , wherein said method comprises the steps of premixing an oxidant electroactive material with a metallated reductant followed by chemically reacting the oxidant electroactive material with the metallated reductant , said reductant being a coating precursor , said metal being at least one alkaline and/or at least one alkaline earth metal , and said chemically reacting being performed under conditions allowing reduction and metallation of the electroactive material via insertion/intercalation of the alkaline metal cation(s) and/or the alkaline earth metal cation(s) and coating formation via a polymerisation reaction like polyanionic or radicalic polymerisation of the reductant.3. The method of claim 1 , wherein the metal of the metallated reductant is an alkaline metal containing or consists of lithium and optionally sodium and/or potassium claim 1 , preferably said alkaline metal comprises at least 50% lithium claim 1 , preferably at least 95% lithium claim 1 , more preferred at least 99% lithium.4. The method of claim 1 , wherein the reductant of the metallated reductant is ...

Precursor, process for production of precursor, process for production of active material, and lithium ion secondary battery

Active material is obtained by sintering a precursor, has a layered structure and is represented by the following formula (1). The temperature at which the precursor becomes a layered structure compound in its sintering in atmospheric air is 450° C. or less. Alternatively, the endothermic peak temperature of the precursor when its temperature is increased from 300° C. to 800° C. in its differential thermal analysis in the atmospheric air is 550° C. or less. Li y Ni a Co b Mn c M d O x F z   (1) In formula (1), the element M is at least one of Al, Si, Zr, Ti, Fe, Mg, Nb, Ba, and V and 1.9≦(a+b+c+d+y)≦2.1, 1.0≦y≦1.3, 0<a≦0.3, 0≦b≦0.25, 0.3≦c≦0.7, 0≦d≦0.1, 1.9≦(x+z)≦2.0, and 0≦z≦0.15 are satisfied.

PRODUCTION PROCESS FOR COMPOSITE OXIDE, POSITIVE-ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND SECONDARY BATTERY

A production process according to the present invention is a novel production process for composite oxide, production process whose a major product is a lithium-manganese-based oxide that includes at least the following: a lithium (Li) element; and a tetravalent manganese (Mn) element, and lithium-manganese-based oxide whose crystal structure belongs to a layered rock-salt structure; 1. A production process for composite oxide being characterized in that:it is a production process for composite oxide, production process whose a major product is a lithium-manganese-based oxide that includes at least the following: a lithium (Li) element; and a tetravalent manganese (Mn) element, and lithium-manganese-based oxide whose crystal structure belongs to a layered rock-salt structure;said composite oxide is obtained via the following:a molten reaction step of reacting at least the following one another: a metal-containing raw material; and a molten-salt raw material at a melting point of the molten-salt raw material or more,the metal-containing raw material including one or more kinds of metallic elements in which Mn is essential,the molten-salt raw material including lithium hydroxide but not including any other compound virtually, and the molten-salt raw material including Li in an amount that exceeds a theoretical composition of Li being included in said composite oxide to be targeted; anda recovery step of recovering said composite oxide being generated at said molten reaction step.2. The production process for composite oxide as set forth in claim 1 , wherein said recovery step is a step of recovering said composite oxide after cooling said molten-salt raw material claim 1 , which has been melted at said molten reaction step claim 1 , gradually.3. The production process for composite oxide as set forth in claim 2 , wherein said recovery step is a step of cooling said molten-salt raw material claim 2 , which has been melted at said molten reaction step claim 2 , ...

ALL-SOLID-STATE LITHIUM BATTERY, AND PRODUCTION METHOD THEREFOR

The invention relates to an all-solid-state lithium battery and to a method for producing such a battery. The all-solid-state lithium battery includes first and second electrodes separated by a solid electrolyte. The second electrode is formed by a composite material including an electrochemically-active material made of a lithium-ion insertion material, and an amorphous lithium-based material which is an ionic conductor for the lithium ions and which is inert relative to the electrochemically active material. 113-. (canceled)14. All-solid-state lithium battery comprising first and second electrodes separated by a solid electrolyte , wherein the second electrode is formed by a composite material comprising an electrochemically active material made of an insertion material for the lithium ion and an amorphous lithium-based material , which is an ionic conductor for the lithium ions and which is inert with respect to the electrochemically active material.15. Lithium battery according to claim 14 , wherein the amorphous lithium-based material is selected among lithium halides claim 14 , lithium hydrides claim 14 , lithium hydroxides claim 14 , lithium phosphates claim 14 , lithium borates claim 14 , lithium nitrates claim 14 , lithium sulfates claim 14 , lithium vanadates claim 14 , lithium oxides and mixed lithium oxides.16. Lithium battery according to claim 14 , wherein the amorphous lithium-based material comprises at least one lithium compound and at least one additional compound.17. Lithium battery according to claim 16 , wherein the additional compound is a halide salt.18. Lithium battery according to claim 14 , wherein the second electrode has a first main face and a second main face and in that it presents an increasing concentration gradient of the amorphous lithium-based material between the first main face and the second main face.19. Lithium battery according to claim 14 , wherein the amorphous lithium-based material has a melting point lower than the ...

Apparatus and method for hot coating electrodes of lithium-ion batteries

A method and apparatus for fabricating high-capacity energy storage devices is provided. In one embodiment, a deposition system for manufacturing energy storage electrodes is provided. The deposition system comprises a transfer mechanism for transferring a substrate, an active material supplying assembly for depositing an electro-active powder mixture onto the substrate, and a heat source for drying the as-deposited electro-active powder mixture.

Cathode active material comprising lithium manganese-based oxide and non-aqueous electrolyte secondary battery based upon the same

Disclosed is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure represented by Formula 1 below and high lithium ion diffusivity since (440) planes are predominantly formed in a crystal structure thereof. Li 1+x M y Mn 2-x-y O 4-z Q z   (1) In Formula 1, 0≦x≦0.3, 0≦y≦1, and 0≦z≦1, M includes at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti, and Bi, and Q includes at least one element selected from the group consisting of N, F, S, and Cl.

BATTERY ELECTRODE AND USE THEREOF

An objective is to reduce the sheet resistance and gas evolution in a battery electrode comprising a conductive intermediate layer capable of reducing or shutting off a current when overcharged. A battery electrode () comprises a conductive intermediate layer () being placed between a current collector () and an active layer () while comprising conductive particles () and a binder (). The mass proportion of conductive particles () is equal to or larger than the mass proportion of the binder (). Conductive particles () has a size distribution that exhibits a first peak with the maximum at a first particle diameter value and a second peak with the maximum at a second particle diameter value larger than the first particle diameter value. The intermediate layer () contains 10% to 60% by mass of conductive particles () having particle diameters that belong to the second peak. 1. A positive electrode for a battery comprising:a metallic positive electrode current collector;a conductive intermediate layer being formed on the positive electrode current collector and comprising conductive particles and a binder; anda positive electrode active material layer being formed on the intermediate layer and comprising a positive electrode active material,wherein in the intermediate layer, the conductive particles and the binder are present at a mass ratio of 98:2 to 70:30,the conductive particles contained in the intermediate layer has a size distribution that exhibits a first peak with the maximum at a first particle diameter value and a second peak with the maximum at a second particle diameter value, with the second particle diameter value being larger than the first diameter value,the intermediate layer contains 10% to 60% by mass of second conductive particles having particle diameters that belong to the second peak, andthe first particle diameter value is 20 nm to 50 nm, the second particle diameter value is 30 nm to 5 μm, and the second particle diameter value is 1.5 times the ...

Lithium-transition metal oxide powder and method of producing the same, positive electrode active material for lithium ion battery, and lithium ion secondary battery

There is provided a lithium-transition metal oxide powder with a coating layer containing lithium niobate formed on a part or the whole part of a surface of a lithium-transition metal oxide particle and having a low powder compact resistance, and a positive electrode active material for a lithium ion battery containing the lithium-transition metal oxide powder. Specifically, there is provided the lithium-transition metal oxide powder composed of a lithium-transition metal oxide particle with a part or the whole part of a surface coated with a coating layer containing lithium niobate, wherein a carbon-content is 0.03 mass % or less.

Layer-layer lithium rich complex metal oxides with high specific capacity and excellent cycling

Lithium rich and manganese rich lithium metal oxides are described that provide for excellent performance in lithium-based batteries. The specific compositions can be engineered within a specified range of compositions to provide desired performance characteristics. Selected compositions can provide high values of specific capacity with a reasonably high average voltage. Compositions of particular interest can be represented by the formula, x Li 2 MnO 3 .(1−x) Li Ni u+Δ Mn u−Δ Co w A y O 2 . The compositions undergo significant first cycle irreversible changes, but the compositions cycle stably after the first cycle.

HIGH CAPACITY ALLOY ANODES AND LITHIUM-ION ELECTROCHEMICAL CELLS CONTAINING SAME

A lithium-ion electro-chemical cell that includes a cathode that includes an electrochemically-active metal oxide coating on a first current collector, an electrolyte, and an anode that includes an electrochemically-active alloy coating on a second current collector. Both the anode and the cathode have a reversible capacity of greater than 4.5 mAh/cmper coated side. The metal oxide coating typically comprises cobalt, manganese, nickel, or a combination thereof. The reversible capacity of the cathode is within % of the reversible capacity of the anode. 2. A lithium-ion electrochemical cell according to claim 1 , wherein both the anode and cathode have an electrode loading of greater than about 6 mAh/cmper coated side.3. A lithium-ion electrochemical cell according to claim 1 , wherein both the anode and cathode have an electrode loading of greater than about 8 mAh/cmper coated side.4. A lithium-ion electrochemical cell according to claim 1 , wherein the electrochemically-active alloy comprises silicon or tin.5. A lithium-ion electrochemical cell according to claim 1 , wherein the electrochemically-active metal oxide coating comprises cobalt claim 1 , manganese claim 1 , or nickel.6. A lithium-ion electrochemical cell according to claim 1 , wherein the electrochemically-active metal oxide coating comprises cobalt claim 1 , manganese and nickel.7. A lithium-ion electrochemical cell according to claim 1 , wherein at least one of the electrochemically-active metal oxide coating or the electrochemically-active alloy coating comprises a binder claim 1 , a conductive diluent claim 1 , or both.8. A lithium-ion electrochemical cell according to claim 7 , wherein the binder comprises lithium polyacrylate.9. A lithium-ion electrochemical cell according to claim 1 , wherein the first current collector comprises aluminum and has two opposing sides.10. A lithium-ion electrochemical cell according to claim 1 , wherein the second current collector comprises copper and has two ...

Multilayer material, method for making same and use as electrode

A multilayer material including a solid substrate and at least two superimposed solid layers containing particles of an electrochemically active material, the first solid layer adhering to the solid substrate and the second solid layer adhering to the first solid layer. The multilayer material has a constant thickness of upper layer not less than 95% and a depth of penetration of the second layer into the first layer which is less than 10% of the thickness of the first layer, and enables as electrode constituent, generators having a low risk of overload degradation to be prepared.

V2O5 ELECTRODES WITH HIGH POWER AND ENERGY DENSITIES

Methods are provided for forming films of orthorhombic VO. Additionally provided are the orthorhombic VOfilms themselves, as well as batteries incorporating the films as cathode materials. The methods use electrodeposition from a precursor solution to form a VOsol gel on a substrate. The VOgel can be annealed to provide an orthorhombic VOfilm on the substrate. The VOfilm can be freestanding such that it can be removed from the substrate and integrated without binders or conductive filler into a battery as a cathode element. Due to the improved intercalation properties of the orthorhombic VOfilms, batteries formed using the VOfilms have extraordinarily high energy density, power density, and capacity. 1. A method of forming orthorhombic VOcomprising the steps of:{'sub': 2', '2', '5, 'sup': '4+', '(a) electrodepositing VOfrom a precursor solution onto a substrate that is cathodic, to provide a plurality of V nucleation sites on the substrate, wherein the precursor solution comprises VOand hydrogen peroxide;'}{'sub': 2', '5', '2', '2', '2', '5', '2, 'sup': '4+', '(b) depositing VO.nHO gel from the precursor solution through catalyzed gelation at the V nucleation sites to provide a mixture of VOand VO.nHO on the substrate.'}2. The method of further comprising annealing the mixture of VOand VO.nHO on the substrate to provide dehydrated orthorhombic VOon the substrate.3. The method of claim 2 , wherein the dehydrated orthorhombic VOis a freestanding claim 2 , continuous film that can be removed from the substrate.4. The method of further comprising separating the dehydrated orthorhombic VOfrom the substrate to provide a freestanding claim 2 , continuous orthorhombic VOfilm.5. The method of claim 2 , wherein annealing comprises heating to a temperature of at least 350° C.6. The method of claim 2 , wherein the dehydrated orthorhombic VOon the substrate is a porous VOfilm having a plurality of pores formed by tuning a deposition characteristic selected from the group ...

Process for preparing ceramic powders in the presence of a source of carbon, powders thus obtained and their use

A method for preparing ceramic powders in the presence of a carbon powder including a step which consists in homogenizing a mixture of particles capable of resulting in a ceramic by heat treatment. Said method can be carried out in the presence of an accelerated solvent and provides, at reduced energy consumption, carbon-coated ceramic powders and then ceramics.

POLYSULFONE COATING FOR HIGH VOLTAGE LITHIUM-ION CELLS

The performance of a lithium ion-cell where the cathode is a layered-layered lithium rich cathode material xLiMO(1-x)LiMNO, M being a transition metal selected from the group consisting of Co, Ni, or Mn, is improved by coating the surface of the cathode with a sulfonyl-containing compound, such as poly(l,4-phenylene ether-ether-sulfone), inhibits the reactivity of the electrolyte with the oxidized electrode surface while allowing lithium ion conduction. 1. An electrochemical cell for a lithium-ion battery , the electrochemical cell having an anode , a cathode , and an electrolyte in communication with the anode and the cathode , wherein the cathode comprises a lithium-ion containing active material and has a protective coating of a sulfone-containing compound on an electrolyte-contacting surface.2. The electrochemical cell of wherein the lithium-ion containing active material operates at voltages over 4.2V vs Li/Li.3. The electrochemical cell of wherein the wherein the active material is the layered-layered lithium rich cathode material xLiMO.(1-x)LiMNO claim 2 , where M is a transition metal.4. The electrochemical cell of wherein the transition metal is selected from the group consisting of Co claim 3 , Ni claim 3 , and Mn.5. The electrochemical cell of wherein the active material is a layered metal oxide.6. The electrochemical cell of wherein the layered metal oxide is Lithium Nickel Manganese Cobalt Oxide (NMC) with Ni Mn Co ratios of 1:1:1.7. The electrochemical cell of wherein the sulfone-containing compound is a polysulfone.8. The electrochemical cell of wherein the polysulfone is selected from the group consisting of polyphenylsulfone and poly(1 claim 7 ,4-phenylene ether-ether-sulfone).9. The electrochemical cell of wherein the anode is a carbon-containing material.10. The electrochemical cell of wherein the carbon-containing material is graphite.11. The electrochemical cell of wherein the electrolyte is a non-aqueous mixture of organic carbonates and non- ...

COMPOSITE ELECTRODE ACTIVE MATERIAL, ELECTRODE AND LITHIUM BATTERY CONTAINING THE COMPOSITE ELECTRODE ACTIVE MATERIAL, AND METHOD OF PREPARING THE COMPOSITE ELECTRODE ACTIVE MATERIAL

In some aspects, a composite electrode active material including a core capable of intercalating and deintercalating lithium and a coating layer formed on at least a part of the surface of the core, wherein the coating layer includes a porous carbonaceous material is provided. 1. A composite electrode active material comprising:a core capable of intercalating and deintercalating lithium; anda coating layer formed on at least a part of a surface of the core,wherein the coating layer comprises a porous carbonaceous material.2. The composite electrode active material of claim 1 , wherein a BET specific surface area of the porous carbonaceous material is 3 times or more greater than that of the core.3. The composite electrode active material of claim 1 , wherein a BET specific surface area of the porous carbonaceous material is about 3 times to 1500 times greater than that of the core.4. The composite electrode active material of claim 1 , wherein a BET specific surface area of the porous carbonaceous material is from about 10 m/g to about 2500 m/g.5. The composite electrode active material of claim 1 , wherein a interlayer spacing dof the porous carbonaceous material is about 0.33 nm to about 0.40 nm.6. The composite electrode active material of claim 1 , wherein the porous carbonaceous material has a fiber or a particle shape.7. The composite electrode active material of claim 1 , wherein the carbonaceous material comprises a plurality of irregular pores therein.8. The composite electrode active material of claim 1 , wherein the carbonaceous material comprises nano-sized pores therein.9. The composite electrode active material of claim 1 , wherein the porous carbonaceous material comprises at least one component selected from the group consisting of porous carbon fibers claim 1 , active carbon claim 1 , carbide derived carbon (CDC) claim 1 , mesoporous carbon claim 1 , carbon nano-tubes claim 1 , and graphene.10. The composite electrode active material of claim 1 , ...

Microwave Rapid Thermal Processing of Electrochemical Devices

Microwave radiation may be applied to electrochemical devices for rapid thermal processing (RTP) (including annealing, crystallizing, densifying, forming, etc.) of individual layers of the electrochemical devices, as well as device stacks, including bulk and thin film batteries and thin film electrochromic devices. A method of manufacturing an electrochemical device may comprise: depositing a layer of the electrochemical device over a substrate; and microwave annealing the layer, wherein the microwave annealing includes selecting annealing conditions with preferential microwave energy absorption in the layer. An apparatus for forming an electrochemical device may comprise: a first system to deposit an electrochemical device layer over a substrate; and a second system to microwave anneal the layer, wherein the second system is configured to provide preferential microwave energy absorption in the device layer.

Alkaline storage battery positive electrode, method of fabricating the same, and alkaline storage battery

In an alkaline storage battery positive electrode, the surface of positive electrode active material particles is uniformly coated with a conductive agent and the alkaline storage battery positive electrode is capable of suppressing an increase in internal battery resistance. The method of fabricating includes: (A) fixing active material particles to a current collector, the active material particles containing, as a main component, nickel hydroxide coated with a conductive agent, the conductive agent containing, as a main component, at least one kind of cobalt compound selected from the group consisting of cobalt hydroxide, tricobalt tetroxide, and cobalt oxyhydroxide; and (B) reducing the cobalt atom in the cobalt compound such that the cobalt atom has an oxidation number of less than +2, by applying a reduction current in an electrolyte solution to the current collector to which the active material particles are fixed, after the step (A).

Method for modifying positive electrode materials for lithium-ion batteries

A method for modifying a positive electrode material for a lithium-ion battery. The method includes: a) stirring a liquid polyacrylonitrile (LPAN) solution at the temperature of between 80 and 300° C. for between 8 and 72 h to yield a cyclized LPAN solution; b) adding positive electrode material for a lithium-ion battery, in a powder form, to the cyclized LPAN solution, and evenly mixing a resulting mixture; c) grinding the mixture, and drying the mixture at room temperature; and d) calcining the mixture at the temperature of between 500 and 1800° C. for between 6 and 24 h in the presence of an inert gas to form a graphene-like structure by the cyclized LPAN. The graphene-like structure is evenly distributed in the positive electrode material of the lithium-ion battery to yield a graphene-like structure modified positive electrode material of the lithium-ion battery.

SOLID-STATE BATTERY ELECTRODE

The invention provides a solid-state battery electrode formed of a lithium ion conductor, an active material, and a solid electrolyte and including a granule that contains a plurality of lithium ion conductors and a plurality of active materials, as well as a method of producing a solid-state battery electrode that has a step of preparing a granule that contains a plurality of lithium ion conductors and a plurality of active materials and a step of uniformly mixing the granule with a solid electrolyte.

Electrode for non-aqueous electrolyte secondary battery, method for producing same, and non-aqueous electrolyte secondary battery

Provided are an electrode for a non-aqueous electrolyte secondary battery capable of improving the dispersibility of a conducting agent in the electrode and forming a good conductive network, a method for producing the same, and a non-aqueous electrolyte secondary battery. An electrode for a non-aqueous electrolyte secondary battery includes an active material, a binder, carbon nanotubes, and a non-fibrous conductive carbon material, characterized in that the electrode includes a polyvinylpyrrolidone-based polymer in an amount in the range of 5 to 25 parts by mass relative to 100 parts by mass of the carbon nanotubes.

LITHIUM-MANGANESE-TIN OXIDE CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY CELL USING THE SAME

A cathode thin film for a lithium secondary cell, which uses a cathode active material substituting Sn for Mn in lithium manganese oxide, has a high discharge capacity and an improved cycle property. 2. The method of claim 1 , wherein the Li compound is selected from the group consisting of LiCO3 claim 1 , LiOH claim 1 , CHCOCH═C(OLi)CH claim 1 , LiOOCCH claim 1 , LiOOCCH·2HO claim 1 , LiCl claim 1 , LiCl·xHO (0.005≦x≦1) claim 1 , LiOCCHC(OH)(COLOCHCOLi·xHO (1≦x≦6) claim 1 , LiS claim 1 , LiSO·HO claim 1 , and a mixture thereof.3. The method of claim 1 , wherein the Mn compound is selected from the group consisting of MnO claim 1 , (CHCO)Mn claim 1 , (CHCOO)Mn·4HO claim 1 , (CHCOO)Mn·2HO claim 1 , [CHCOCH═C(O)CH]Mn claim 1 , Mn(CHO) claim 1 , MnCO claim 1 , MnCl claim 1 , MnCl·xHO (1≦x≦5) claim 1 , [CH(CH)CO]Mn claim 1 , MnF claim 1 , Mn(NO) claim 1 , MnO claim 1 , MnO claim 1 , MnO claim 1 , Mn(ClO)6·HO claim 1 , MnSO·xHO (1≦x≦6) claim 1 , MnS claim 1 , and a mixture thereof.4. The method of claim 1 , wherein the calcination process in step c) is conducted at 400 to 800° C. for 1 to 5 hours under an ambient condition.5. The method of claim 1 , wherein the second-milled powder is pressed in step e) to form a pellet.6. The method of claim 1 , wherein the sintering process in step f) is conducted at 800 to 1 claim 1 ,300° C. for 1 to 24 hours under an ambient condition.8. The method of claim 7 , wherein the LCVD process is conducted at a substrate temperature of 350 to 550° C. claim 7 , while maintaining the distance between the substrate and the target at 3 to 5 cm and the oxygen partial pressure at 0.05 to 0.25 Torr.9. The method of claim 7 , wherein the LCVD process is conducted with a laser power density of 1 to 4 J/cm claim 7 , a beam area of 2 to 5 mmand a spot repetition of 3 to 10 Hz claim 7 , for 30 to 120 minutes. This application claims priority from Korean patent application No. 10-2008-0025092 filed on Mar. 18, 2008, and Korean patent application No. 10- ...

ELECTRODE FOR BATTERY AND PRODUCTION METHOD THEREOF, NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK, AND ACTIVE MATERIAL

According to one embodiment, there is provided an electrode for battery which includes a current collector and an active material layer provided on the current collector. The active material layer contains particles of a lithium titanate compound having a spinel structure and a basic polymer. Here, the basic polymer is coating at least a part of the surface of the particles of the lithium titanate compound. 1. An electrode for battery comprising a current collector and an active material layer provided on the current collector ,wherein the active material layer comprises a particle of lithium titanate having a spinel structure and a basic polymer,and the basic polymer is coating at least a part of a surface of the particle of lithium titanate compound.2. The electrode according to claim 1 , wherein the basic polymer is an amine compound.3. The electrode according to claim 1 , wherein the basic polymer contains a nitrogen-containing aromatic heterocyclic compound.4. The electrode according to claim 2 , wherein the basic polymer contains a nitrogen-containing aromatic heterocyclic compound.5. The electrode according to claim 1 , wherein the active material layer further comprises at least one of a cellulose ether compound and a copolymer rubber.6. The electrode according to claim 2 , wherein the active material layer further comprises at least one of a cellulose ether compound and a copolymer rubber.7. The electrode according to claim 3 , wherein the active material layer further comprises at least one of a cellulose ether compound and a copolymer rubber.8. The electrode according to claim 4 , wherein the active material layer further comprises at least one of a cellulose ether compound and a copolymer rubber.9. A nonaqueous electrolyte battery comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the electrode according to any one of as a negative electrode;'}a positive electrode; anda nonaqueous electrolyte.10. A nonaqueous electrolyte battery comprising:{' ...

Non-aqueous electrolyte secondary cell

The present invention aims to provide the following non-aqueous electrolyte secondary cell having excellent safety. A non-aqueous electrolyte secondary cell comprises an electrode assembly having positive and negative electrodes. The positive electrode has a core exposed portion (formed by exposing at least one side edge of a belt-shaped core along the longitudinal direction of the core), a active material layer formed on the core, and a protective layer (formed on the core exposed portion near the active material layer and having a lower conductivity than the core). The negative electrode has first and second negative electrode core exposed portions, in which both side edges of a belt-shaped negative electrode core are exposed along the longitudinal direction of the core, and a negative electrode active material layer formed on the negative electrode core. And the whole of the second negative electrode core exposed portion is opposite to the protective layer.

Positive active material and positive electrode and lithium battery including positive active material

A positive active material and a lithium battery including the positive active material. The positive active material includes a large diameter active material and a small diameter active material, wherein the small diameter active material includes a Ni-based lithium-transition metal composite oxide and a coating layer including a Mn-containing compound on at least a portion of the surface thereof.

Sodium Iron(II)-Hexacyanoferrate(II) Battery Electrode and Synthesis Method

A method is provided for synthesizing sodium iron(II)-hexacyanoferrate(II). A Fe(CN) 6 material is mixed with the first solution and either an anti-oxidant or a reducing agent. The Fe(CN) 6 material may be either ferrocyanide ([Fe(CN) 6 ] 4− ) or ferricyanide ([Fe(CN) 6 ] 3− ). As a result, sodium iron(II)-hexacyanoferrate(II) (Na 1+X Fe[Fe(CN) 6 ] Z .M H 2 O is formed, where X is less than or equal to 1, and where M is in a range between 0 and 7. In one aspect, the first solution including includes A ions, such as alkali metal ions, alkaline earth metal ions, or combinations thereof, resulting in the formation of Na 1+X A Y Fe[Fe(CN) 6 ] Z .M H 2 O, where Y is less than or equal to 1. Also provided are a Na 1+X Fe[Fe(CN) 6 ] Z .M H 2 O battery and Na 1+X Fe[Fe(CN) 6 ] Z .M H 2 O battery electrode.

Positive active material for rechargeable lithium battery, method for preparing same and rechargeable lithium battery including same

A positive active material including a compound represented by Li 1+x M 1−k Me k O 2 . A surface part of a particle of the positive active material has a mole ratio [Me/M] (A) of element represented by Me to element represented by M in Li 1+x M 1−k Me k O 2 of 0.05≦A≦0.60; the entire particle has a mole ratio [Me/M] (B) of element represented by Me to element represented by M in Li 1+x M 1−k Me k O 2 of 0.003≦B≦0.012; and element represented by Me has a concentration difference of between two positions of less than or equal to about 0.02 wt % in an inner part of the particle. In Li 1+x M 1−k Me k O 2 , −0.2≦x≦0.2, 0<k≦0.05 M is one selected from Ni, Mn, Co, and a combination thereof, Me is one selected from Al, Mg, Ti, Zr, B, Ni, Mn, and a combination thereof, and M is not the same element as Me or does not include the same element as Me.

POSITIVE ELECTRODE FOR SECONDARY BATTERY, SECONDARY BATTERY, AND METHOD FOR FABRICATING POSITIVE ELECTRODE FOR SECONDARY BATTERY

A positive electrode for a secondary battery which enables both good battery characteristics and electrode strength at a predetermined level, a secondary battery, and a method for fabricating the positive electrode for a secondary battery are provided. 1. A positive electrode for a secondary battery comprising:a current collector; andan active material layer over the current collector,wherein the active material layer comprises an active material, graphene, and a binder,wherein a carbon layer is in contact with a surface of the active material,wherein a proportion of the graphene in the active material layer is greater than or equal to 0.1 wt % and less than or equal to 1.0 wt %, andwherein a maximum value of discharge capacity (mAh/g) of the positive electrode is more than or equal to 140 mAh/g at a discharging rate of 1 C.2. The positive electrode for a secondary battery according to claim 1 , wherein the active material comprises lithium iron phosphate.3. The positive electrode for a secondary battery according to claim 1 , wherein a thickness of the carbon layer is greater than or equal to 1 nm and less than or equal to 50 nm.4. The positive electrode for a secondary battery according to claim 1 , wherein the carbon layer has an amorphous structure.5. The positive electrode for a secondary battery according to claim 1 , wherein a discharge curve of the positive electrode at a lower limit voltage or more has a plateau in 60% or more of a measuring range claim 1 , and wherein the lower limit voltage is 2 V.6. A secondary battery comprising the positive electrode for a secondary battery according to .7. An electronic device comprising the secondary battery according to .8. A positive electrode for a secondary battery comprising:a current collector; andan active material layer over the current collector,wherein the active material layer comprises an active material, graphene, and a binder,wherein a carbon layer is in contact with a surface of the active material, ...

Composite anode active material, method of preparing the same, and lithium battery including the composite anode active material

In an aspect, a composite anode active material including lithium titanium oxide particles; and a TiN, and TiN a method of preparing the composite anode active material, and a lithium battery including the composite anode active material is provided.

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

In an aspect, a composite anode active material including particles, wherein the particles include: a first carbonaceous material that is substantially crystalline and includes at least one carbon nano-sheet; a non-carbonaceous material capable of intercalating and deintercalating lithium; and a second carbonaceous material that binds the first carbonaceous material and the non-carbonaceous material, wherein the particles have pores having a size of 50 nm or more is disclosed. 1. A composite anode active material comprising particles ,wherein the particles each comprise:a first carbonaceous material that is substantially crystalline and comprises at least one carbon nano-sheet on a portion of a surface;a non-carbonaceous material capable of intercalating and deintercalating lithium; anda second carbonaceous material that binds the first carbonaceous material and the non-carbonaceous material, andwherein the particles each comprise pores having a size of 50 nm or more.2. The composite anode active material of claim 1 , wherein a cross-section of the particles comprises a non-spherical pore.3. The composite anode active material of claim 1 , wherein the pores are formed on a surface of the particles.4. The composite anode active material of claim 1 , wherein the particles have an average diameter D50 of 10 μm or more.5. The composite anode active material of claim 1 , wherein the particles have an average diameter D50 ranging from about 10 μm to about 100 μm.6. The composite anode active material of claim 1 , wherein the particles are spherical or oval particles having an aspect ratio of 3 or less.7. The composite anode active material of claim 1 , wherein the first carbonaceous material and the non-carbonaceous material are dispersed in the particles.8. The composite anode active material of claim 1 , wherein an amount of the non-carbonaceous material is in a range of more than 0 wt % to about 50 wt % based on a total weight of the particles.9. The composite anode ...

Cathode composite material and lithium ion battery using the same

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 lithium cobalt 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.

Device for producing wet granulated substance for electrode and method of producing the same

A device for producing a wet granulated substance for an electrode, the device including a storage tank in which a solid component is stored, liquid supply units configured to supply a liquid component, and a stirring member configured to stir the solid component and the liquid component together. The liquid supply unit includes a nozzle configured to allow the liquid component to drop, a pump configured to repeatedly switch between a first state in which a pressure is applied to the liquid component and a second state in which a lower pressure than in the first state is applied to the liquid component, and a rotating member that is provided between the nozzle and the storage tank, has a disk shape with irregularities formed on the edge, and rotates in a non-horizontal plane.

Microwave rapid thermal processing of electrochemical devices

Microwave radiation may be applied to electrochemical devices for rapid thermal processing (RTP) (including annealing, crystallizing, densifying, forming, etc.) of individual layers of the electrochemical devices, as well as device stacks, including bulk and thin film batteries and thin film electrochromic devices. A method of manufacturing an electrochemical device may comprise: depositing a layer of the electrochemical device over a substrate; and microwave annealing the layer, wherein the microwave annealing includes selecting annealing conditions with preferential microwave energy absorption in the layer. An apparatus for forming an electrochemical device may comprise: a first system to deposit an electrochemical device layer over a substrate; and a second system to microwave anneal the layer, wherein the second system is configured to provide preferential microwave energy absorption in the device layer.

BATTERY AND METHOD OF CONSTRUCTING A BATTERY

A battery and a method of constructing a battery are disclosed in which a first conductive substrate portion has a first face and a second conductive substrate portion has a second face opposed to the first face. A first electrode material is disposed in electrical contact with the first face, an electrolyte material is disposed in contact with the first electrode material, a second electrode material is disposed in contact with the electrolyte material, and a conductive tab disposed in contact with the second electrode material. The first conductive substrate portion, the first electrode material, and the conductive tab extend outward beyond a particular edge of the second conductive substrate portion. 1. A battery , comprising:a first conductive substrate portion having a first face and a second conductive substrate portion having a second face opposed to the first face;a first electrode material disposed in electrical contact with the first face;an electrolyte material disposed in contact with the first electrode material;a second electrode material disposed in contact with the electrolyte material; anda conductive tab disposed in contact with the second electrode material;wherein the first conductive substrate portion, the first electrode material, and the conductive tab extend outward beyond a particular edge of the second conductive substrate portion.2. The battery of claim 1 , wherein the first and second conductive substrate portions are integral with one another and a fold portion is disposed therebetween.3. The battery of claim 2 , wherein the electrolyte material is disposed between layers of the first electrode material.4. The battery of claim 1 , wherein the first and second conductive substrate portions are discrete elements.5. The battery of claim 1 , further including an adhesive disposed between the first and second faces for securing the first face to the second face and wherein the first electrode material is disposed in electrical contact with ...

POSITIVE ELECTRODES FOR LITHIUM BATTERIES

Lithium-rich compounds that are precursors for positive electrodes for lithium cells and batteries comprise a LiO-containing compound as one component, and a second charged or partially-charged component, selected preferably from a metal oxide, a lithium-metal-oxide, a metal phosphate or metal sulfate compound. LiO is extracted from the electrode precursors to activate the electrode either by electrochemical methods or by chemical methods. Methods for synthesizing and activating the electrodes, electrochemical cells, and batteries containing such electrodes also are described. 1. A non-aqueous lithium electrochemical cell comprising a negative electrode and an activated positive electrode with a lithium-containing non-aqueous electrolyte therebetween; wherein the activated positive electrode is prepared by;{'sub': '2', 'combining a first component and a second component to form a precursor material, wherein the first component contains one or more metal cation and LiO-containing materials; and the second component contains one or more charged or partially-charged metal cation-containing electrode materials selected from the group consisting of a charged or partially charged lithium metal oxide, a charged or partially charged metal phosphate, and a charged or partially charged metal sulfate, which can accommodate lithium within their structure during the charging and discharging of the electrode when included in an electrochemical cell, with the proviso that at least one of the first and second components does not contain manganese;'}fabricating an electrode from the precursor material; and{'sub': '2', 'subsequently electrochemically activating the positive electrode by applying a sufficiently high potential to the electrode in the electrochemical cell to remove LiO from the precursor material, such that lithium is electrochemically extracted from the positive electrode to load the anode therewith;'}wherein the negative electrode comprises one or more material ...

Robust porous electrodes for energy storage devices

Electrodes, energy storage devices using such electrodes, and associated methods are disclosed. In an example, an electrode for use in an energy storage device can comprise porous silicon having a plurality of channels and a surface, the plurality of channels opening to the surface; and a structural material deposited within the channels; wherein the structural material provides structural stability to the electrode during use.

METHODS FOR FABRICATION OF INTERCALATED LITHIUM BATTERIES

A method for fabricating intercalated lithium batteries in open air deposits a thin dense layer of amorphous solid-state lithium boride electrolyte directly onto a negative electrode via flame spray pyrolysis. In one embodiment, the negative electrode is attached to a prefabricated positive electrode via hot pressing (embossing), thus forming an intercalated lithium battery. The method significantly improves upon current methods of fabricating thin film solid state batteries by permitting fabrication without the aid of a controlled environment, thereby allowing for significantly cheaper fabrication than prior batch methods. 1. A method for fabricating an intercalated lithium battery without the assistance of a controlled environment comprising the steps of:(a) providing a substrate to serve as the negative electrode having at least one surface to be coated;{'sub': '2', 'claim-text': mixing a solution of a combustible fluid with fluid-soluble lithium and boron compounds to dissolve the compounds in the fluid to form a reagent mixture;', 'spraying the reagent mixture through a nozzle to form a liquid spray containing the reagent mixture;', 'passing the spray through a flame to combust the reagent mixture, thereby forming heated lithium metaborate;', 'depositing the lithium metaborate onto the substrate at a temperature between 750C and 1100C to form an amorphous lithium metaborate coating on the substrate;, '(b) forming a layer of amorphous LiBO(lithium metaborate) on the at least one surface by(c) removing the substrate from the flame following deposition; and(d) adhering a positive electrode configured to accept lithium ions to the at least one surface to form an intercalated lithium battery.2. The method of wherein the lithium metaborate is deposited onto the substrate at a temperature of between 850° C. and 1000° C.3. The method of wherein the negative electrode comprises at least one of LiCoO claim 1 , carbon black claim 1 , graphite claim 1 , graphene claim 1 , ...

ELECTRODE SURFACE ROUGHNESS CONTROL FOR SPRAY COATING PROCESS FOR LITHIUM ION BATTERY

A method and apparatus for fabricating energy storage devices and device components is provided. It has been found that spraying of slurries comprising electro-active materials onto a flexible substrate and subsequently exposing the substrate to an increasing temperature gradient leads to the deposition of a dry or mostly dry film having reduced surface roughness. The increasing temperature gradient may result from a plurality of heated rollers over which the substrate traverses wherein each heated roller is heated to a temperature greater than the previous heated roller leading to the deposition of a dry or mostly dry film having a relatively smooth surface with low porosity. Deposition of a dry or mostly dry film eliminates the need for large and costly drying mechanism thus reducing both the cost and footprint of the apparatus. 1. A method for forming an electrode structure , comprising:spraying an electro-active material over a flexible conductive substrate;transferring the flexible conductive substrate having the electro-active material deposited thereon over a first heated roller having a first temperature; and thentransferring the flexible conductive substrate having the electro-active material deposited thereon over a second heated roller having a second temperature, wherein the second temperature is greater than the first temperature and the electro-active material comprises a cathodically active material.2. The method of claim 1 , further comprising transferring the flexible conductive substrate having the electro-active material deposited thereon over a third heated roller having a third temperature after transferring the flexible conductive substrate over the second heated roller claim 1 , wherein the third temperature is greater than the second temperature.3. The method of claim 2 , wherein the first temperature is between about 60 degrees Celsius and about 90 degrees Celsius and the second temperature is between about 90 degrees Celsius and about 100 ...

POSITIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Disclosed is a secondary battery having high capacity and excellent charge/discharge cycle characteristics, which is obtained by employing a positive electrode that is obtained by covering the surface of a positive electrode material with a polymer solid electrolyte composition using a polyether copolymer and an electrolyte salt compound that is a combination of lithium bisoxalate borate and another lithium salt compound. With respect to the positive electrode, the polymer solid electrolyte and/or the positive electrode material contains a compound that has a phenol structure wherein both of two ortho positions are substituted by a tert-butyl group. 1. A positive electrode having a surface of a positive electrode material covered with a solid polymer electrolyte ,wherein the solid polymer electrolyte comprises:{'sub': 2', '2, '(i) a polymer having an ethylene oxide structure (—CHCHO—), and'} 'one or both of the solid polymer electrolyte and the positive electrode material comprise:', '(ii) an electrolyte salt compound which is a combination of lithium bis(oxalate)borate with another lithium salt compound,'}(iii) a phenol compound having a phenolic structure in which both of two ortho-positions are substituted with a tert-butyl group.3. The positive electrode according to claim 1 , wherein the phenol compound (iii) is incorporated into one or both of the solid polymer electrolyte and the positive electrode material; by a method of coating claim 1 , on the surface of the positive electrode material claim 1 , a solution of the solid polymer electrolyte containing the phenol compound claim 1 , or by a method of coating claim 1 , on a metal electrode substrate claim 1 , a slurry of the positive electrode material containing the phenol compound.4. The positive electrode according to claim 1 , wherein the phenol compound (iii) is a compound of the general formula:{'br': None, 'sub': '3', 'A(X)'}wherein A is a phenol group having tert-butyl groups positioned at two ortho- ...

MANUFACTURING METHOD OF ELECTRODE AND MANUFACTURING APPARATUS OF ELECTRODE

A manufacturing method manufactures an electrode by use of a manufacturing apparatus including a B-roll configured to convey granules, a C-roll configured to convey a metal foil, and a cooling portion configured to cool down the metal foil on an upstream side relative to the C-roll in terms of a conveying direction of the metal foil. Further, the manufacturing apparatus cools down the metal foil by use of the cooling portion, supplies the metal foil thus cooled down by the cooling portion to the C-roll, and transfers the granules to the metal foil in a deposition gap between the B-roll and the C-roll. 1. A manufacturing method of manufacturing an electrode by use of a first roll configured to convey an active-material material as a material containing an active material , and a second roll placed adjacent to the first roll in parallel to each other so as to convey a foil , such that the active-material material is transferred to the foil by rotating the first roll and the second roll in directions reverse to each other so as to form a layer of the active-material material on a surface of the foil , the manufacturing method comprising:cooling down the foil by use of a cooling device on an upstream side relative to the second roll in terms of a conveying direction of the foil.2. The manufacturing method of manufacturing the electrode claim 1 , according to claim 1 , wherein:the cooling device includes a cooling roll; andat a time of cooling down the foil, the foil is cooled down such that the foil is brought into contact with the cooling roll while an outer peripheral surface of the cooling roll is maintained at a temperature lower than an air temperature of a manufacture environment.3. The manufacturing method of manufacturing the electrode claim 2 , according to claim 2 , wherein:the cooling device includes a refrigerant supply portion configured to supply refrigerant to the cooling roll; andat the time of cooling down the foil, the refrigerant supply portion causes ...

Cathode material of lithium cobalt oxide for a lithium ion secondary battery and preparation methods and applications thereof

The invention relates to a cathode material of lithium cobalt oxide for a lithium ion secondary battery and preparation methods and applications thereof. A cathode material comprises a core material and a coating layer, wherein the core material is Li x Co (1−y) A y O (2+z) , wherein 1.0≦x≦1.11, 0≦y≦0.02, −0.2<z<0.2, and A is one or two or more selected from the group consisting of Al, Mg, Y, Zr and Ti, wherein the coating layer is Li a M b B c O d , wherein M is a lithium ion active metal element and one or two or more selected from the group consisting of Co, Ni, Mn and Mo, and B is an inactive element, and one or two or more selected from the group consisting of Al, Mg, Ti, Zr and Y, and 0.95<b+c<2.5, and the molar ratio of Li to the active metal element M is 0<a/b<1. The battery prepared by the cathode material has advantages of high capacity, high compacted density and excellent cycling stability etc., under high voltage.

Positive Electrode Active Material for Secondary Battery, Method of Preparing the Same, and Lithium Secondary Battery Including the Same

A positive electrode active material for a secondary battery which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles. 1. A positive electrode active material for a secondary battery , comprising:a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn),wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m,the lithium composite transition metal oxide comprises the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, and the cobalt (Co) in an amount greater than an amount of the manganese (Mn), andthe lithium composite transition metal oxide is composed of single particles.2. The positive electrode active material for a secondary battery of claim 1 , wherein the positive electrode active material is composed of primary particles having an average particle diameter (D) of 2 μm to 10 μm.3. The positive electrode active material for a secondary battery of claim 1 , wherein a peak corresponding to a layered rock-salt structure does not appear in a 2θ range of 20° to 25° during XRD measurement of the positive electrode active material.4. The positive electrode active material for a secondary battery of claim 1 , wherein the positive electrode active material has a crystallite size of 210 nm or more.5. The positive electrode active material for a secondary battery of claim 1 , wherein the lithium composite transition metal oxide has a molar ratio (Li/M) of lithium (Li) to total metallic elements (M) of 1.06 or less.6. The positive electrode active material for a ...

COMPOSITE FOR FORMING ELECTRODE, METHOD OF MANUFACTURING ELECTRODE, AND METHOD OF MANUFACTURING NONAQUEOUS ELECTRIC STORAGE ELEMENT

A composite for forming an electrode contains an active material and macromolecular particles, and can be discharged by an inkjet method. The composite for forming an electrode is excellent in the storage stability and the discharge stability even when the content of the active material is increased. 1. A composite for forming an electrode , comprising:an active material; andmacromolecular particles,wherein the composite can be discharged by an inkjet method.2. The composite for forming the electrode as claimed in claim 1 , further comprising:a dispersion medium.3. The composite for forming the electrode as claimed in claim 1 , wherein the macromolecular particles have an average particle diameter of 0.01 to 1 μm.4. The composite for forming the electrode as claimed in claim 1 , wherein a content of the active material is greater than or equal to 10 mass %.5. The composite for forming the electrode as claimed in claim 1 , wherein the active material is one or more species selected from among a group consisting of a lithium-containing transition metal oxide claim 1 , a lithium-containing transition metal phosphate compound claim 1 , and a carbon material.6. The composite for forming an electrode as claimed in claim 5 , wherein the active material is the lithium-containing transition metal phosphate compound compounded with the carbon material.7. The composite for forming the electrode as claimed in claim 1 , wherein a viscosity at 25° C. is less than or equal to 200 mPa·s.8. The composite for forming the electrode as claimed in claim 1 , wherein the active material contains lithium claim 1 , and is nonaqueous.9. A method of manufacturing an electrode claim 1 , the method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'discharging the composite for forming the electrode as claimed in onto an electrode substrate.'}10. The method of manufacturing the electrode as claimed in claim 9 , the method further comprising:pressing the electrode substrate onto which ...

Method for Preparing Positive Electrode Active Material for Secondary Battery

A method for preparing a positive electrode active material for a secondary battery includes the steps of: providing a positive electrode active material precursor including a core portion and a shell portion, wherein the core portion contains nickel (Ni), cobalt (Co), and manganese (Mn), and the shell portion contains cobalt (Co) and surrounds the core portion; and forming a lithium composite transition metal oxide in a single particle form by mixing the positive electrode active material precursor with a lithium raw material to obtain a mixture, and firing the mixture at a temperature of 970° C. or more.

MULTI-LAYERED GRAPHENE ELECTRODES, MATERIALS, AND PRECURSORS THEREOF

Provided herein are high performance electrodes, electrode materials, and precursors thereof. Also provided herein are processes of generating the same. Provided in certain embodiments herein are systems and processes for manufacturing electrode materials and/or electrodes, including thin layer electrodes, such as battery electrodes and/or electrode materials (e.g., lithium ion or lithium sulfur battery negative electrode materials and/or electrodes) (e.g., the thin layer electrode comprising a carbon and silicon). 1. A process for manufacturing an electrode material , the process comprising:a. producing an plume or aerosol from a fluid stock (e.g., from a plume or aerosol producing nozzle), the fluid stock comprising a plurality of inclusion particles and a liquid medium, the inclusion particles comprising a plurality of active electrode material-containing particles, and a plurality of multi-layered graphenic (e.g., graphene oxide) inclusions (e.g., the plurality of carbon inclusions comprising a plurality of first graphene components comprising at least 50 wt % carbon and about 10 wt % to about 50 wt % oxygen), andb. collecting a first composition on a substrate, the first composition being a first film comprising the plurality of active electrode material-containing particles secured within one or more first graphenic web, the one or more first graphenic web comprising the plurality of multi-layered graphenic components.2. The process of claim 1 , wherein the electrode is a lithium ion battery anode.3. The process of claim 2 , wherein the electrode material is a silicon-carbon electrode material.4. The process of any one of the preceding claims claim 2 , wherein the active electrode material-containing electrode is a silicon-containing material.5. The process of claim 4 , wherein the silicon-containing material is SiOx claim 4 , wherein 0≤x<2.6. The process of claim 5 , wherein 0≤x<0.5.7. The process of any one of the preceding claims claim 5 , wherein the plume ...

METHOD OF MAKING HIGH CAPACITY ELECTRODE MATERIAL

A method of manufacturing lithium-metal nitride including suspending a lithium-metal-oxide-powder (LMOP) within a gaseous mixture, incrementally heating the suspended LMOP to a holding temperature of between 400 and 800 degrees Celsius such that the LMOP reaches the holding temperature, and maintaining the LMOP at the holding temperature for a time period in order for the gaseous mixture and the LMOP to react to form a lithium-metal nitride powder (LMNP). 1. A method of manufacturing lithium-metal nitride comprising:suspending a lithium-metal-oxide-powder (LMOP) within a gaseous mixture;incrementally heating the suspended LMOP to a holding temperature of between 400 and 800 degrees Celsius such that the LMOP reaches the holding temperature; andmaintaining the LMOP at the holding temperature for a time period in order for the gaseous mixture and the LMOP to react to form a lithium-metal nitride powder (LMNP).2. The method of claim 1 , further comprising cooling the suspended LMOP to an ambient temperature from the holding temperature.3. The method of claim 1 , further comprising degassing the suspended LMOP.4. The method of claim 3 , wherein degassing flowing an inert gas over the suspended LMOP.5. The method of claim 4 , wherein the inert gas includes Argon or Helium.6. The method of claim 5 , wherein the inert gas does not include Nitrogen.7. The method of claim 1 , wherein suspending the LMOP within the gaseous mixture includes feeding the gaseous mixture to a reaction chamber claim 1 , wherein the reaction chamber includes an outer wall containing an annular gas path therein surrounding an internal chamber configured to enclose the LMOP.8. The method of claim 7 , further comprising feeding claim 7 , the gaseous mixture is fed through a porous media located in a bottom portion of the internal chamber in order to suspend the LMOP.9. The method of claim 7 , further comprising degassing the suspended LMOP within the internal chamber.10. The method of claim 1 , ...

Positive electrode materials having a superior hardness strength

A powderous positive electrode material for a lithium secondary battery has the general formula Li[NiMM′M″]O. M is one or more elements of the group Mn, Zr and Ti. M′ is one or more elements of the group Al, B and Co. M″ is a dopant different from M and M′, and x, a, b and c are expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05. The material has an unconstrained cumulative volume particle size distribution value (Γ(D10)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (Γ(D10)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (Γ(D10)). When Γ(D10) is compared to Γ(D10), the relative increase in value is less than 100%. When Γ(D10) is compared to Γ(D10), the relative increase in value is less than 120%. 1. A powderous positive electrode material for a lithium secondary battery , the material having the general formula Li[NiMM′M″]O;M being either one or more elements of the group Mn, Zr and Ti,M′ being either one or more elements of the group Al, B and Co,M″ being a dopant different from M and M′,x, a, b and c being expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05;{'sup': 0', 'P', 'P, 'sub': P=0', 'P=200', 'P=300, 'wherein the material has an unconstrained cumulative volume particle size distribution value (Γ(D10)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (Γ(D10)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (Γ(D10)),'}{'sup': P', '0, 'sub': P=200', 'P=0, 'wherein when Γ(D10) is compared to Γ(D10), the relative increase in value is less than 100%,'}{'sup': P', '0, 'sub': P=300', 'P=0, 'wherein when Γ(D10) is compared to Γ(D10), the relative increase in value is less than 120%,'}{'sup': 3+', '3+, 'sub': 'max', 'wherein the material has a molar amount of Ni that equals 1−2a−b, and ...

METHOD OF PRODUCING NEGATIVE ELECTRODE, NEGATIVE ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

A first silicon oxide material and a second silicon oxide material are prepared. A dispersion is prepared by dispersing the first silicon oxide material in an aqueous carboxymethylcellulose solution. A negative electrode composite material slurry is prepared by dispersing the second silicon oxide material and a binder in the dispersion. A negative electrode is produced by applying the negative electrode composite material slurry to a surface of a negative electrode current collector and then performing drying. The binder includes no carboxymethylcellulose. The first silicon oxide material has not been pre-doped with lithium. The second silicon oxide material has been pre-doped with lithium. 1. A method of producing a negative electrode for a non-aqueous electrolyte secondary battery , the method comprising at least:preparing a first silicon oxide material and a second silicon oxide material;preparing a dispersion by dispersing the first silicon oxide material in an aqueous carboxymethylcellulose solution;preparing a negative electrode composite material slurry by dispersing the second silicon oxide material and a binder in the dispersion; andproducing a negative electrode by applying the negative electrode composite material slurry to a surface of a negative electrode current collector and then performing drying,the binder including no carboxymethylcellulose,the first silicon oxide material not having been pre-doped with lithium,the second silicon oxide material having been pre-doped with lithium.2. The method of producing a negative electrode according to claim 1 , wherein{'sub': 2', '2', '5, 'the first silicon oxide material includes no LiSiOphase, and'}{'sub': 2', '2', '5, 'the second silicon oxide material includes a LiSiOphase.'}3. The method of producing a negative electrode according to claim 1 , wherein the binder includes styrene-butadiene rubber.4. The method of producing a negative electrode according to claim 1 , whereinthe ratio of the second silicon ...

Method of making stretchable composite electrode

A method of making a stretchable composite electrode is provided. An elastic substrate is pre-stretched along a first direction and a second direction, to obtain a pre-stretched elastic substrate. A carbon nanotube active material composite layer is laid on a surface of the pre-stretched elastic substrate. And the pre-stretching of the elastic substrate is removed, and a plurality of wrinkles is formed on a surface of the carbon nanotube active material composite layer.

NEGATIVE ELECTRODE PLATE, PREPARATION METHOD THEREOF AND ELECTROCHEMICAL DEVICE

The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance. 1. A negative electrode plate , comprising:a negative current collector;a negative active material layer, disposed on at least one surface of the negative current collector, said negative active material layer comprises opposite first surface and second surface, wherein said first surface is disposed away from the negative current collector; andan inorganic dielectric layer, disposed on the first surface of the negative active material layer, said inorganic dielectric layer comprises first dielectric layer and second dielectric layer,{'sub': 1', '1, 'wherein the first dielectric layer is located on an outer surface of the negative active material layer and has a thickness Tof 30 nm≤T≤1000 nm,'}{'sub': 2', '2, 'wherein the second dielectric layer is located on an inner wall of at least a portion of pores inside the negative active material layer and has a thickness Tof 0 nm Подробнее

ELECTROLYTE AND LITHIUM-ION BATTERY

The present disclosure provides an electrolyte and a lithium-ion battery, the electrolyte comprises an electrolyte salt, an organic solvent and an additive. The organic solvent comprises ethylene carbonate, dimethyl carbonate and ethyl methyl carbonate. The additive comprises a boron-based or phosphorus-based lithium oxalate, a fluorinated lithium phosphate and one or two selected from a group consisting of vinylene carbonate and fluoroethylene carbonate. The electrolyte of the present disclosure can improve the cycle performances under both room temperature fast charging and high temperature fast charging, the power performances under both room temperature and low temperature and the storage performance under high temperature of the lithium-ion battery at the same time. 3. The electrolyte according to claim 1 , wherein the fluorinated lithium phosphate is one or two selected from a group consisting of lithium monofluorophosphate and lithium difluorophosphate.4. The electrolyte according to claim 1 , whereina total mass of the ethylene carbonate and the ethyl methyl carbonate is 60%˜80% of a total mass of the organic solvent;a content of the boron-based or phosphorus-based lithium oxalate is 0.3%˜1% of a total mass of the electrolyte;a content of the fluorinated lithium phosphate is 0.3%˜1% of the total mass of the electrolyte;a content of the vinylene carbonate is 0.5˜1.5% of the total mass of the electrolyte;a content of the fluoroethylene carbonate is 0.7%˜2% of the total mass of the electrolyte.6. The electrolyte according to claim 5 , wherein the linear carboxylic acid ester is one or more selected from a group consisting of methyl formate claim 5 , ethyl formate claim 5 , methyl acetate claim 5 , ethyl acetate claim 5 , propyl acetate claim 5 , methyl propionate claim 5 , ethyl propionate claim 5 , propyl propionate claim 5 , butyl propionate claim 5 , isobutyl propionate claim 5 , n-pentyl propionate claim 5 , isopentyl propionate claim 5 , ethyl ...

FINELY DEPOSITED LITHIUM METAL POWDER

The present invention provides a method of finely depositing lithium metal powder or thin lithium foil onto a substrate while avoiding the use of a solvent. The method includes depositing lithium metal powder or thin lithium foil onto a carrier, contacting the carrier with a substrate having a higher affinity for the lithium metal powder as compared to the affinity of the carrier for the lithium metal powder, subjecting the substrate while in contact with the carrier to conditions sufficient to transfer the lithium metal powder or lithium foil deposited on the carrier to the substrate, and separating the carrier and substrate so as to maintain the lithium metal powder or lithium metal foil, deposited on the substrate. 1. A method of depositing lithium metal powder onto a substrate without the use of a solvent , said method consisting essentially of the steps of:a) depositing stabilized lithium metal powder having a mean particle size of 60 microns or less onto a carrier to a thickness of 20 microns or less to form a single layer;b) contacting the carrier with a substrate having a higher affinity for the lithium metal powder as compared to the affinity of the carrier for the stabilized lithium metal powder;c) subjecting the substrate while in contact with the carrier to conditions sufficient to transfer the stabilized lithium metal powder deposited on the carrier to the substrate; andd) separating the carrier and substrate so as to maintain the stabilized lithium metal powder deposited on the substrate.2. The method of claim 1 , wherein the carrier is an amorphous solid resin claim 1 , cellulosic or metallic claim 1 ,3. The method of claim 1 , wherein the substrate is a material selected from the group consisting of carbonaceous materials claim 1 , LiTiO claim 1 , Si claim 1 , Sn claim 1 , Cu claim 1 , SiO claim 1 , tin oxides claim 1 , tin alloys claim 1 , metal foils claim 1 , conductive polymers claim 1 , conductive ceramics claim 1 , transition metal oxides claim ...

THIN FILM BATTERY FABRICATION USING LASER SHAPING

A method of fabricating a battery comprises selecting a battery substrate having cleavage planes, and depositing at least one battery component film comprising a metal or metal compound. A plurality of pulsed laser beam bursts from a femtosecond laser source that is set to provide a pulsed laser beam having an irradiance level of from about 10 to about 800 J/cm, are applied to the battery component film to vaporize at least a portion of the metal or metal compound of the battery component film substantially without causing fractures along the cleavage planes of the battery substrate. 1. A method of fabricating a battery on a battery substrate , the method comprising:(a) selecting a battery substrate having cleavage planes;(b) depositing at least one battery component film on the battery substrate, the battery component film comprising a metal or metal compound; and{'sup': '2', '(c) applying to the battery component film, a plurality of pulsed laser beam bursts from a femtosecond laser source that is set to provide a pulsed laser beam having an irradiance level of from about 10 to about 800 J/cm, to vaporize at least a portion of the metal or metal compound of the battery component film substantially without causing fractures along the cleavage planes of the battery substrate.'}2. A method according to wherein the femtosecond laser source is set to provide a pulsed laser beam having a pulse duration of from about 50 to about 600 femtoseconds.3. A method according to wherein the femtosecond laser source is set to provide a pulsed laser beam having an energy of from about 2 microjoules to about 100 millijoules.4. A method according to wherein the femtosecond laser source is set to provide a pulsed laser beam having a pulse repetition rate of from about 50 to about 1000 Hz.5. A method according to wherein the femtosecond laser source is set to provide a pulsed laser beam having a peak laser fluence of less than 0.2 J/cm.6. A method according to wherein the battery ...

Cathode active material, method of preparing the cathode material, cathode, and lithium secondary battery including the same

A cathode active material including at least two agglomerates of primary particles and a cathode and a lithium secondary battery containing the same are disclosed. In the cathode active material, a secondary particle includes a nickel-based lithium transition metal oxide, an average particle diameter of each primary particle is in a range from about 2 to about 3 μm, and an average particle diameter of the secondary particle is in a range from about 5 to about 8 μm.

Positive Electrode for Secondary Battery, Method for Manufacturing Same, and Lithium Secondary Battery Including Same

The present disclosure provides a method for manufacturing a positive electrode for a secondary battery, the method including forming a positive electrode mixture layer including a positive electrode active material on a positive electrode current collector, and forming a metal oxide coating layer on the positive electrode mixture layer by atomic layer deposition, wherein the positive electrode active material includes lithium composite transition metal oxide particles and a boron-containing coating layer formed on the lithium composite transition metal oxide particles, and the lithium composite transition metal oxide particles include nickel (Ni), cobalt (Co), and manganese (Mn), wherein the nickel (Ni) is 60 mol % or greater of all metals excluding lithium. 1. A method for manufacturing a positive electrode for a secondary battery , the method comprising:forming a positive electrode mixture layer including a positive electrode active material on a positive electrode current collector; andforming a metal oxide coating layer on the positive electrode mixture layer by atomic layer deposition, whereinthe positive electrode active material includes lithium composite transition metal oxide particles and a boron-containing coating layer formed on the lithium composite transition metal oxide particles, and the lithium composite transition metal oxide particles include nickel (Ni), cobalt (Co), and manganese (Mn), wherein the nickel (Ni) is 60 mol % or greater of all metals excluding lithium.2. The method of claim 1 , wherein the lithium composite transition metal oxide particles contain 80 mol % or greater of the nickel (Ni) of all metals excluding lithium.3. The method of claim 1 , wherein the metal oxide coating layer comprises at least one selected from the group consisting of AlO claim 1 , BaO claim 1 , TiO claim 1 , and MnO.4. The method of claim 1 , wherein the thickness of the metal oxide coating layer is 1 nm to 30 nm.5. The method of claim 1 , wherein the atomic ...

CATHODE UNIT AND METHOD FOR PRODUCING A CATHODE UNIT

A cathode unit for a solid-state battery and a method for producing the cathode unit. The cathode unit has a layer made of a composite material () which has an electrode material, a solid electrolyte material, an electrically conductive conducting additive and polyetrafluoroethylene as a binder. The composite material contains less than 1 wt. % polyetrafluoroethylene and the polyetrafluoroethylene is present, at least in part, as fibrillated polyetrafluoroethylene. 1. A cathode unit for a solid state battery comprising a layer composed of a composite material that has an electrode material , a solid electrolyte material , an electrically conductive additive , and polytetrafluoroethylene as a binding agent ,the composite material comprises less than 1 weight percent polytetrafluoroethylene; andthe polytetrafluoroethylene is at least partially present as fibrillated polytetrafluoroethylene.2. The cathode unit in accordance with claim 1 , wherein the composite material comprises the electrically conductive electrode material in an amount of 60 weight percent to 99 weight percent.3. The cathode unit in accordance with claim 1 , wherein the electrode material comprises LiCoO claim 1 , LiNiO claim 1 ,{'sub': 1_x', 'x', '2', '4', '2', '2', '4', '2', '3', '8', 'x', 'y', 'z', '2', 'x', 'y', 'z', '2', '4', '5', '12', '2', '4', '2', 'x', '2', '3', '2', '4', '3', '4', '2', '4', '2', '2', '7', '2', '4', '3, 'LiNiCoO, LiFePO, LiMnO, LiMnO, LiMnNiO, LiNiCoMnO, LiNiCoAlO(where x+y+z=1), LiTiO, LiFeSiO, NaS, NaMnO, NaV(PO), NaFePO, NaFePOF, NaNiMnO, NaTiOor Na—Ti(PO)or a mixture thereof.'}4. A The cathode unit in accordance with claim 1 , wherein the solid electrolyte material comprises a material of the system LiS—PS claim 1 , LiS—GeS claim 1 , LiS—BS claim 1 , LiPSCI claim 1 , LiS—SiS claim 1 , LiS—PS—LiX (X═CI claim 1 , Br claim 1 , I) claim 1 , LiS—PS—LiO claim 1 , LiS—PS—LiO-Lil claim 1 , LiS—SiS-Lil claim 1 , LiS—SiS— LiBr claim 1 , LiS—SiS—LiCI claim 1 , LiS—SiS—BS-Lil claim ...

MANUFACTURING METHOD OF CATHODE ACTIVE MATERIAL, AND CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY MANUFACTURED THEREBY

Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. 1. A method of preparing a cathode active material , the method comprising coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment.2. The method of claim 1 , wherein the heat treatment is performed in a temperature range of 130° C. to 300° C.3. The method of claim 2 , wherein the heat treatment is performed in a temperature range of 130° C. to 200° C.4. The method of claim 2 , wherein the boron-containing compound is transformed into a lithium boron oxide through a reaction with at least a portion of lithium impurities in the lithium transition metal oxide by the heat treatment.5. The method of claim 2 , wherein a portion of elemental boron (B) of the lithium boron oxide is doped into the lithium transition metal oxide by the heat treatment claim 2 , and an amount of the B has a concentration gradient gradually decreasing from the surface of the lithium transition metal oxide to inside thereof.6. The method of claim 4 , wherein the lithium impurities comprise LiOH claim 4 , LiCO claim 4 , or a mixture thereof.7. The method of claim 1 , wherein the mixing is performed by a mortar grinder mixing method or a mechanical milling method.8. The method of claim 7 , wherein the mixing by the mechanical milling method is performed by using a roll mill claim 7 , ball mill claim 7 , high energy ball mill claim 7 , planetary mill claim 7 , stirred ball mill claim 7 , vibrating mill claim 7 , or jet mill.9. The method of claim 1 , wherein the boron-containing compound comprises any one selected from the group consisting of HBO claim 1 , ...

MULTI-LAYER BATTERY ELECTRODE DESIGN FOR ENABLING THICKER ELECTRODE FABRICATION

Implementations of the present invention relate generally to high-capacity energy storage devices and methods and apparatus for fabricating high-capacity energy storage devices. In one implementation, a method for forming a multi-layer cathode structure is provided. The method comprises providing a conductive substrate, depositing a first slurry mixture comprising a cathodically active material to form a first cathode material layer over the conductive substrate, depositing a second slurry mixture comprising a cathodically active material to form a second cathode material layer over the first cathode material layer, and compressing the as-deposited first cathode material layer and the second cathode material layer to achieve a desired porosity. 1. A method for forming a multi-layer cathode structure , comprising:providing a conductive substrate;depositing a first slurry mixture comprising a cathodically active material to form a first cathode material layer over the conductive substrate;depositing a second slurry mixture comprising a cathodically active material to form a second cathode material layer over the first cathode material layer; andcompressing the as-deposited first cathode material layer and the second cathode material layer to achieve a desired porosity.2. The method of claim 1 , wherein the first slurry mixture and the second slurry mixture each independently comprise:a cathodically active material; andat least one of a binding agent, a binding precursors, an electro-conductive material and a solvent.3. The method of claim 1 , wherein a solids content of the first slurry mixture is different than a solids content of the second slurry mixture.4. The method of claim 2 , wherein a tap density of the cathodically active material of the first slurry mixture differs from a tap density of the cathodically active material of the second slurry mixture.5. The method of claim 4 , wherein the cathodically active material of the first slurry mixture differs from ...

Aliginates as binders for battery cathodes

A cathode unit for a battery, in which the cathode includes a viscoelastic, and a polymeric gel former selected from the group of natural polysaccharides having a proportion of carboxylate or carboxylic acid groups of greater than or equal to 0.5 and less than or equal to 2.0 in relation to the number of monomer units. Also described is a method for manufacturing the cathode units and the use of a battery including the cathode unit according to the invention for power supply. 110-. (canceled)11. A cathode unit for a battery , comprising:a cathode having a viscoelastic, polymeric gel former selected from the group of natural polysaccharides having a proportion of carboxylate or carboxylic acid groups of greater than or equal to 0.5 and less than or equal to 2.0 in relation to the number of the monomer units.12. The cathode unit of claim 11 , wherein the viscoelastic claim 11 , polymeric gel former is made of a salt of an alginic acid.13. The cathode unit of claim 11 , wherein the viscoelastic claim 11 , polymeric gel former in aqueous solution has a viscosity of greater than or equal to 100 mPa and less than or equal to 15000 mPa.14. The cathode unit of claim 11 , wherein the viscosity of the viscoelastic claim 11 , polymeric gel former in solution is reduced as a result of a shear stress of 100 times the yield point by greater than or equal to 10% and less than or equal to 90%.15. The cathode unit of claim 11 , wherein the cathode unit is an integral part of a lithium-ion battery or a lithium-polymer battery.16. The cathode unit of claim 11 , wherein the cathode contains sulfur claim 11 , carbons claim 11 , and a salt of an alginic acid.17. The cathode unit of claim 11 , wherein the cathode contains nickel-cobalt-manganese oxide claim 11 , a salt of an alginic acid claim 11 , and optionally carbon claim 11 , or the cathode contains a composite material made of nickel-cobalt-manganese oxide claim 11 , LiMnO claim 11 , a salt of an alginic acid claim 11 , and ...

Aqueous Slurry For Battery Electrodes

A slurry or paste for the manufacture of electrodes for secondary batteries such as lithium ion containing electrochemical cells. The slurry comprises a water based binder with CMC, SBR and PVDF as binder materials.

Method for manufacturing nonaqueous electrolyte secondary battery

A method for manufacturing a nonaqueous electrolyte secondary battery according to an embodiment of the present invention is a method for manufacturing a nonaqueous electrolyte secondary battery including a positive electrode plate and a negative electrode plate provided with a negative electrode mixture layer containing graphite and a silicon material and includes a step of applying positive electrode mixture slurry containing a lithium-transition metal composite oxide and polyvinylidene fluoride to a positive electrode current collector, a step of forming a positive electrode mixture layer by drying the positive electrode mixture slurry, and a step of heat-treating the positive electrode mixture layer. The temperature of heat treatment is preferably 160 ° C. to 350 ° C.

Method for producing ceramic cathode layers on current collectors

A method for producing a ceramic cathode layer on an electrically conductive substrate includes applying a coating to the electrically conductive substrate, the coating being in a form of a suspension including at least one suspending agent and at least one ceramic material. The method further includes heating the coating in a reducing atmosphere such that the ceramic material is completely or in part reduced to a fusible reaction product, heating the coating in a reducing atmosphere to temperatures above the melting point of the reaction product so as to form a melt, densifying or sintering the coating in a reducing atmosphere at temperatures that are 100° C. greater than a melting temperature of the reaction product, and reoxidizing the densified or sintered coating in an oxidizing atmosphere in a temperature range of between 400° C. and 1,200° C.

ALL-SOLID BATTERY AND METHOD OF MANUFACTURING THE SAME

Disclosed are an all-solid battery and a method of manufacturing the same. The all-solid battery as disclosed herein may include current collectors having the same size for a cathode and an anode, the elongation areas of the cathode and the anode may be controlled due to the ductility of the current collectors during a pressing process. Thus, areas of the anode and the cathode may become different from each other upon the pressing, thus preventing a short-circuit fault from being formed at the edge portion thereof in the pressing process. 1. An all-solid battery , comprising:a cathode layer, an anode layer and an electrolyte layer,wherein the cathode layer and the anode layer are stacked and pressed to form the all-solid battery,wherein an elongation of the cathode layer and an elongation of the anode layer are different upon pressing the stacked cathode layer and anode layer,wherein an area of the cathode layer and an area of the anode layer are same when stacked, and upon the pressing, the area of the cathode layer and an area of the anode layer are different.2. The all-solid battery of claim 1 , wherein after the pressing claim 1 , the area of the anode layer is greater than the area of the cathode layer.3. The all-solid battery of claim 1 , wherein the cathode layer comprises a cathode current collector coated with a cathode composite layer claim 1 ,the anode layer comprises an anode current collector coated with an anode composite layer, andan elongation percentage of the cathode current collector and an elongation percentage of the anode current collector are different.4. The all-solid battery of claim 3 , wherein the elongation percentage of the anode current collector is about 101% to 120% of the elongation percentage of the cathode current collector.5. The all-solid battery of claim 3 , wherein the cathode composite layer comprises a cathode active material claim 3 , a cathode conductor and a cathode binder claim 3 , and the anode composite comprises an ...

THIN-FILM BATTERY

A thin-film battery of lithium-free type includes a stack of a positive electrode made of LiCoO, an electrolyte layer made of LiPON, and a negative electrode made of copper. An adhesive layer based on polyvinylidene chloride (PVDC) is positioned on a face of the negative electrode opposite the electrolyte layer. 1. A thin-film battery of lithium-free type , comprising a stack of:{'sub': '2', 'a positive electrode made of LiCoO,'}an electrolyte layer made of LiPON,a negative electrode made of copper deposited on and in contact with a face of the electrolyte layer, anda first adhesive layer based on polyvinylidene chloride (PVDC) deposited on and in contact with a face of the negative electrode opposite the electrolyte layer.2. The battery according to claim 1 , wherein the first adhesive layer is covered with an encapsulation layer.3. The battery according to claim 2 , wherein the encapsulation layer is a film of alu-PET type.4. The battery according to claim 2 , wherein the encapsulation layer is a film made of mica or of zirconium.5. The battery according to claim 2 , further comprising a second adhesive layer claim 2 , separate from the first adhesive layer claim 2 , positioned between the first adhesive layer and the encapsulation layer.6. The battery according to claim 5 , wherein the second adhesive layer is made of an elastomer of butyl type or of styrene-butadiene type.7. The battery according to claim 1 , wherein said stack additionally comprises a cathode current collector on the positive electrode side opposite the electrolyte layer.8. The battery according to claim 1 , wherein said stack is borne on a carrier substrate made of mica or of ceramic.9. A method for fabricating a thin-film battery of lithium-free type claim 1 , comprising:{'sub': '2', 'forming a positive electrode made of LiCoO;'}forming an electrolyte layer made of LiPON on and in contact with the positive electrode;forming a negative electrode made of copper on and in contact with a face of ...

POSITIVE ELECTRODE FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY INCLUDING SAME

Provided is a method for manufacturing a positive electrode for a secondary battery, the method including applying a first positive electrode slurry including a first positive electrode active material on a positive electrode current collector, forming a first positive electrode mixture layer by primarily rolling the current collector applied with the first positive electrode slurry, applying a second positive electrode slurry including a second positive electrode active material on the above-formed first positive electrode mixture layer, and forming a second positive electrode mixture layer on which the first positive electrode mixture layer is laminated by secondarily rolling the first positive electrode mixture layer applied with the second positive electrode slurry. 1. A method for manufacturing a positive electrode for a secondary battery , comprising:applying a first positive electrode slurry including a first positive electrode active material on a positive electrode current collector;forming a first positive electrode mixture layer by primarily rolling the positive electrode current collector applied with the first positive electrode slurry;applying a second positive electrode slurry including a second positive electrode active material on the above-formed first positive electrode mixture layer; andforming a second positive electrode mixture layer on which the first positive electrode mixture layer is laminated by secondarily rolling the first positive electrode mixture layer applied with the second positive electrode slurry.2. The method of claim 1 , wherein the average particle diameter (D) of the first positive electrode active material is 5 to 80% of the average particle diameter (D) of the second positive electrode active material.3. The method of claim 1 , wherein the average particle diameter (D) of the first positive electrode active material is 1 to 15 μm.4. The method of claim 1 , wherein the average particle diameter (D) of the second positive ...

MULTILAYER BODY AND METHOD FOR PRODUCING SAME

A multilayer body is provided that is used as the negative electrode of a lithium-ion secondary battery that has a high capacity and is excellent in terms of safety, economic efficiency, and cycle characteristics. The multilayer body has a conductive substrate and a composite layer provided on the conductive substrate. The composite layer includes a plurality of particles of silicon oxide and a conductive substance present in gaps between the plurality of particles of silicon oxide. The average particle diameter of the particles of silicon oxide is 1.0 μm or less. The multilayer body further has a conductive layer that is provided on the composite layer and contains a conductive substance. The conductive layer has a thickness of 20 μm or less. 1. A multilayer body , comprising:a conductive substrate; anda composite layer that is provided on the conductive substrate and includes a plurality of particles of silicon oxide having an average particle diameter of 1.0 μm or less and a conductive substance present in gaps between the plurality of particles of silicon oxide, andfurther comprising:a conductive layer that is provided on the composite layer, contains the conductive substance, and does not contain the particles of silicon oxide.2. The multilayer body according to claim 1 ,wherein the silicon oxide is silicon monoxide.3. The multilayer body according to claim 1 ,wherein the plurality of particles of silicon oxide is a mixture of particles of amorphous silicon oxide and particles of silicon.4. The multilayer body according to claim 1 ,wherein the silicon oxide is amorphous silicon oxide.5. (canceled)6. The multilayer body according to claim 1 ,wherein the conductive layer has a thickness of 20 μm or less.7. A method for producing a multilayer body claim 1 , comprising:a film formation step of forming a silicon oxide layer containing a plurality of particles of silicon oxide on a conductive substrate by vapor deposition or sputtering; andan application step of ...

ELECTROCHEMICAL CELLS HAVING IMPROVED IONIC CONDUCTIVITY

Electrochemical cells of the present disclosure may include one or more multilayered electrodes. One or both multilayered electrodes may be configured such that a second layer farther from the current collector has a higher resistance to densification than a first layer closer to the current collector. This may be achieved by including a plurality of non-active ceramic particles in the second layer. Accordingly, calendering of the electrode results in a greater compression of the first layer, and a beneficial porosity profile is created. This may improve the ionic conductivity of the electrode, as compared with known systems. 1. An electrochemical cell comprising:a first electrode and a second electrode on opposing sides of a separator, the first electrode including an active material composite layered onto a current collector substrate; a first layer adjacent to and in contact with the current collector substrate, the first layer having a first thickness and including a plurality of first active material particles; and', 'a second layer intermediate the first layer and the separator, the second layer having a second thickness and including a plurality of second active material particles mixed with a plurality of non-active ceramic particles each consisting of a non-active mesoporous or macroporous ceramic material, wherein particle sizes of the non-active ceramic particles are a same order of magnitude as the second thickness of the second layer, such that the non-active ceramic particles are configured to conduct ions between the first layer and the separator through the non-active mesoporous or macroporous ceramic material of the non-active ceramic particles., 'wherein the active material composite of the first electrode comprises2. The electrochemical cell of claim 1 , wherein the first thickness is less than the second thickness.3. The electrochemical cell of claim 1 , wherein the non-active ceramic particles have an average diameter in a range of 85% to 105% ...