Способ получения нанопорошков феррита кобальта и микрореактор для его реализации

Изобретение относится к технологии получения нанопорошков феррита кобальта в микромасштабном реакторе. Способ заключается в подаче исходных компонентов - смеси растворов солей кобальта и железа в соотношении компонентов, отвечающих стехиометрии CoFeO, и раствора щелочи в соотношении с растворами солей, обеспечивающем кислотность среды в диапазоне от 7 до 8, отвечающей условиям соосаждения компонентов, при этом растворы исходных компонентов подают в виде тонких струй диаметром от 50 до 1000 мкм со скоростью от 1,5 до 20 м/с, сталкивающихся в вертикальной плоскости под углом от 30° до 160°, при температуре в диапазоне от 20°С до 30°С, и давлении, близком к атмосферному, причем соотношение расходов исходных компонентов задают таким образом, что при столкновении струй образуется жидкостная пелена, в которой происходит смешивание и контакт растворов исходных компонентов. Микрореактор для осуществления способа содержит корпус 1 и патрубки 2 с соплами 3 для подачи исходных компонентов 10 и патрубок ...

АНОДНЫЙ МАТЕРИАЛ ЛИТИЙ-ИОННОГО АККУМУЛЯТОРА НА ОСНОВЕ LiCrTiOСО СТРУКТУРОЙ ШПИНЕЛИ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к способу получения анодного материала со структурой шпинели для литий-ионной автономной энергетики, включающему смешение соли лития LiCO, оксида титана (IV) TiOи оксида хрома (III) CrOв стехиометрическом соотношении, а также углеродного прекурсора, измельчение частиц смеси в шаровой мельнице и последующую термообработку. При этом в качестве углеродного прекурсора используется крахмал, измельчение проводят в среде ацетона, а температура термообработки лежит в пределах 800-850°C. Использование настоящего способа позволяет получить анодный материал с высокими показателями удельной емкости и обратимости циклирования. 1 пр., 1 ил.

СПОСОБ ПОЛУЧЕНИЯ АЛЮМОМАГНЕЗИАЛЬНЫХ ШПИНЕЛЕЙ

ПРИМЕНЕНИЕ ИОННЫХ ЖИДКОСТЕЙ В КОМПОЗИЦИЯХ ДЛЯ ГЕНЕРИРОВАНИЯ КИСЛОРОДА

МАГНИТНЫЕ НАНОЧАСТИЦЫ ДЛЯ ПРИМЕНЕНИЯ ПРИ ГИПЕРТЕРМИИ, ИХ ПРИГОТОВЛЕНИЕ И ПРИМЕНЕНИЕ В КОНСТРУКТАХ ДЛЯ ФАРМАКОЛОГИЧЕСКОГО ИСПОЛЬЗОВАНИЯ

... 1. Конструкты, включающие магнитную нанометровую частицу, функционализированную бифункциональными соединениями, полимер, возможно содержащий фармакологически активную молекулу, и, когда указанный полимер является нерастворимым в воде, внешний защитный слой поверхностных агентов. ! 2. Конструкты по п.1, в которых указанная фармакологически активная молекула, если она присутствует, соединена с полимером или диспергирована в нем. ! 3. Конструкты по п.1, в которых указанные магнитные нанометровые частицы являются шпинелями и оксидами MIIMIII 2O4 типа, где MII=Fe, Co, Ni, Zn, Mn; MIII=Fe, Cr в нанометровой форме. ! 4. Конструкты по п.3, в которых указанные магнитные нанометровые частицы выбраны из: феррита кобальта, магнетита и маггемита. ! 5. Конструкты по п.1, в которых указанные бифункциональные соединения выбраны из: тиолов, карбоновых кислот, гидроксамовых кислот, фосфорных кислот, их эфиров и солей, имеющих алифатическую цепь, несущую вторую функциональную группу в концевом положении ( ...

Cobalt aluminate coating production especially on blue phosphor

A method of producing a substrate with a cobalt aluminate (CoAl2O4) coating involves coating the substrate with cobalt aluminium hydrotalcite ((Co,Al)8(OH)16CO3.4H2O) and then calcining at 300-500 deg C.

Körnige Magnetitteilchen und Verfahren zu ihrer Herstellung

Lithium-Akkumulator

Process for preparing a doping element metal oxide powder for ceramic zinc oxide varistors

The invention relates to a process for preparing a metal oxide powder containing the doping elements for a ceramic varistor based on doped zinc oxide. In this process, compounds of the required doping elements in the intended stoichiometric ratio are first mixed together with a zinc compound in an amount of not more than two tenths of the zinc oxide required in the varistor to give a common aqueous homogeneously dispersed solution and this is then subjected to spray pyrolysis. The metal oxide powder contains crystalline phases having a spinel and/or pyrochlore structure.

METHOD OF MAKING ANALOGUES OF BETA"-ALUMINA

A method of making an analogue of beta ''-alumina, having a layered beta ''-alumina spinel-type structure in which at least some of the Na ions in the layers of Na ions separated by layers of Al and O ions in said beta ''-alumina spinel-type structure are replaced by substitute metal cations which are mono-, di-and/or trivalent comprises dispersing in a boehmite having a well developed and highly ordered crystal structure at least one oxide of the substitute metal cations or a precursor thereof to form a starting mixture, and heating the mixture to a temperature at which it is converted to the analogue. Analogues containing K2O, Li2O and MgO are exemplified.

Spinel-type lithium-manganese composite oxide

PYROLYTIC DEPOSITION OF A COBALT/TIN OXIDE SPINEL FILM

PROCEDURE FOR THE PRODUCTION OF ANIONI ALUMINA AND BOEHMITE-CONTAINING COMPOSITIONS, COMPOSITIONS THE ANIONI ALUMINA AND BOEHMITE CONTAINING AND FROM IT MANUFACTURED CATALYSTS

PROCESS FOR PRODUCTION AND USE OF ANIONI LOAM MATERIALS

MIKROWELLENOFEN FOR THE PRODUCTION OF CERAMIC PIGMENTS PROCESS USING SUCH A FURNACE

PROCEDURE FOR THE PRODUCTION OF VERY MUCH DISTRIBUTED ALUMINAS OR ALUMINIUM MAGNESIUM SPINELS WITH HOMOGENEOUS POROUS STRUCTURES.

PROCEDURE FOR THE PRODUCTION OF ALPHA-A1203SINTERK¯RPERN.

PROCEDURE FOR THE PRODUCTION OF HOMOGENEOUS, PURIFY-HASTY CERAMIC(S) POWDER.

TERNARY LITHIUM MIXTURE OXIDES, PROCEDURES FOR THEIR PRODUCTION AS WELL AS THEIR USE

STABILIZED ELECTRO-CHEMICAL CELL MATERIAL

PROCEDURE FOR THE PRODUCTION OF LITHIUM TITANATE

Procedure for the production of a ferrite

Procedure for the production of mixture oxides

PROCEDURE FOR THE PRODUCTION OF LITHIUMINTERKALATIONSVERBINDUNGEN

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

MICROCRYSTALLINE TRANSITION METAL OXIDE SPINEL ARTICLES

Magnetic nanoparticles for the application in hyperthermia, preparation thereof and use in constructs having a pharmacological application

Process for preparing lithium and manganese oxides

Nanometric-sized ceramic materials, process for their synthesis and uses thereof

PROCESSES FOR PRECIPITATING METAL COMPOUNDS

Method for preparing lithium manganate having spinel structure

PROCESSES FOR PRECIPITATING METAL COMPOUNDS

WHISKER-REINFORCED CERAMIC CONTAINING ALUMINUM OXYNITRIDE AND METHOD OF MAKING THE SAME

A ceramic body (20), as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s).

FERRIMAGNETIC SPINEL FIBERS

This invention provides a process for the preparation of ferrimagnetic spinel fibers composed of crystallites corresponding to the formula: MlFe2O4 where M is a divalent metal such as manganese iron, cobalt, nickel, copper, zinc, cadmium, magnesium, barium, strontium, or any combination thereof.

PROCESSES FOR PRECIPITATING METAL COMPOUNDS

PRODUCTION OF FERRIMAGNETIC SPINEL FIBERS

PROCESS FOR PRODUCING A POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES

An active material for a positive electrode for lithium secondary batteries and composed of a lithium-manganese oxide (LixMn2O4) with a spinel structure is produced by mixing manganese dioxide with lithium formate (HCOOLi) and/or lithium acetate (CH3COOLi), heating the resulting mixture for 10 to 100 hours, preferably at a temperature of from 600.degree.C to 750.degree.C, and if necessary, grinding the heated mixture. The constituents of the mixture contain manganese and lithium in a molar ratio (Mn:Li) of 2:x, where 0.5 < x < 1.5. The resulting product has an extremely fine crystallinity and exhibits good cycling stability.

IMPROVED MIXED METAL OXIDE CRYSTALLINE POWDERS AND METHOD FOR THE SYNTHESIS THEREOF

A method for the synthesis of mixed metal oxide crystalline powders comprises the steps of preparing a raw material mixture containing at least two different metal cations; adding a template material to the mixture and blending it therewith; initiating formation of a mixed metal oxide by calcination of the mixture and the template material, whereby particles of the mixed metal oxides are formed; and thereafter recovering the mixed metal oxide particles. Mixed metal oxide crystalline powders comprise a template material; and metal oxides which form pigment classes of material containing the template material, the pigment classes being selected from the group consisting of borate, garnet, olivine, phenacite, phosphate, priderite, pyrochlore, sphene, spinet and zircon, as well as perovskite crystal classes of material containing the template, all of which have a uniform particle morphology and particle size ranging between about 0.2 to 100 with minimal comminution.

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

LINING PRODUCT FOR SHIELDED ELECTRICAL RESISTANCE AND MIXED OXYNITRIDE-BASED REFRACTORY APPLICATION AND PRODUCTION PROCESS

PRODUIT A BASE D'OXYNITRURE MIXTE POUR GARNISSAGE DE RESISTANCE ELECTRIQUE BLINDEE ET APPLICATION REFRACTAIRE, ET PROCEDE D'OBTENTION Produit de garnissage de résistance électrique blindée constitué d'une poudre d'oxynitrure mixte d'aluminium et d'un ou plusieurs métaux alcalino-terreux y compris le magnésium, et son procédé de fabrication par nitruration directe d'un métal en présence d'une poudre d'oxydes infusibles.

LITHIUM SECONDARY BATTERY

The invention provides a lithium secondary battery, comprising a cathode ( 3) having a spinel-structured lithium-manganese complex oxide as the active material, which is characterized in that the particles of said spinel- structured lithium-manganese complex oxide are hollow, spherical secondary particles by sintering of primary particles, and said secondary particles have a mean particle size of from 1 to 5 micrometer and a specific surface area of from 2 to 10 m2/g. The lithium secondary battery has a high capacity and excellent charge- discharge cycle characteristics.

METHOD OF PREPARING LI1+XMN2-XO4 FOR USE AS SECONDARY BATTERY ELECTRODE

A continuous method of preparing a single phase lithiated manganese oxide intercalation compound of the formula Li Mn O comprising the steps of mixing intimately a lithium hydroxide or a lithium salt and a manganese oxide or a manganese salt; feeding the intimately mixed salts to a reactor, continuously agitating the mixed salts in the reactor, heating the agitated mixed salts in the reactor at a temperature of from about 650.degree.C to about 800.degree.C for a time not in excess of about 4 hours in an oxygen-containing atmosphere; and cooling the reacted product to less than about 200.degree.C in an oxygen-containing atmosphere for a time not in excess of about 2 hours. 31 ...

NANO POWDER SYNTHESIS USING HYDROPHILIC ORGANIC MEDIA

A process for producing nano size powders comprising the steps of mixing an aqueous continuous phase comprising at least one metal cation salt with a hydrophilic organic polymeric disperse phase, forming a metal cation saltpolymer gel, and heat treating the gel at a temperature sufficient to drive off water and organics within the gel, leaving as a residue a nanometer particle-size power.

NANO POWDER SYNTHESIS USING HYDROPHILIC ORGANIC MEDIA

A process for producing nano size powders comprising the steps of mixing an aqueous continuous phase comprising at least one metal cation salt with a hydrophilic organic polymeric disperse phase, formi ng a metal cation saltpolymer gel, and heat treating the gel at a temperature sufficient to drive off water and organics within the gel, lea ving as a residue a nanometer particle-size power.

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.

Verfahren zur Herstellung eines ferromagnetischen Kernes mit geringen Verlusten bei Hochfrequenz.

Magnetkern und Verfahren zur Herstellung dieses Magnetkernes.

Procédé de fabrication d'oxydes métalliques mixtes et de solutions solides d'oxydes métalliques

Verfahren zur Herstellung von komplexen Metalloxiden

Verfahren zur Herstellung von dünnen Schichten, Überzügen und Imprägnationen aus zusammengesetzten Metalloxyden

Kontinuierliches Verfahren zur Herstellung eines Ferrits

CONTINUOUS METHOD OF SYNTHESIS OF NANOMATERIALS BY SIMULTANEOUS EMULSIFYING AND DETONATION EMULSION

СПОСОБ ПОЛУЧЕНИЯ Li1+ХMn2-ХО4 ДЛЯ ПРИМЕНЕНИЯ В КАЧЕСТВЕ ЭЛЕКТРОДА АККУМУЛЯТОРНОЙ БАТАРЕИ

Непрерывный способ получения однофазного литиймарганецоксидного интеркалационного соединения формулы Li1+хМn2-xO4, включающий стадии: однородного смешивания гидроксида лития или соли лития и оксида марганца или соли марганца; подачи однородно смешанных соединений в реактор; непрерывного перемешивания смешанных солей в реакторе при температуре от около 650°С до приблизительно 800°С в течение времени не более приблизительно 4 ч в кислородсодержащей атмосфере; и охлаждения продукта реакции до температуры менее приблизительно 200°С в кислородсодержащей атмосфере в течение времени не более около 2 ч.

NANO-SIZED CERAMIC MATERIALS, PRODUCTION METHOD AND APPLICATION

LITHIUM-INTERCALATED TITANIUM DIOXIDE, LITHIUM TITANATE PARTICLES MADE THEREFROM, AND RELATED METHODS

CONTAINING LITIIMARGANETsOKSIDINTERKALYaTsIONNYE COMPOUNDS OF LITHIUM

Method for preparing superfine mesoporous magnesium aluminate spinel

The invention discloses a method for preparing a superfine mesoporous magnesium aluminate spinel, which comprises the following steps: (1) adding an alkaline solution into a mixed solution of a soluble aluminum salt and a magnesium salt, and adding a surfactant into the mixture; (2) performing hydrothermal crystallization on the mixture after ageing at a temperature of between 120 and 180 DEG C for 4 to 72 hours; and (3) separating the mixture to obtain a solid product, and washing, filtering and drying the solid product to obtain magnesium aluminate spinel powder without baking or after baking at a temperature of between 500 and 700 DEG C for 4 to 6 hours. The particle size of the magnesium aluminate spinel prepared by the method is less than 100 nanometers, the specific surface area is between 200 and 400 m<2>/gram, the pore volume is between 0.20 and 0.55 cm<3>/gram, and the most probable pore diameter is between 3 and 6 nanometers.

Compositions and materials for electronic applications

For lithium manganese oxide composite electrode

PROCESS OF PRODUCTION Of IRON OXIDES FROM WASTE LIQUIDS CONTAINING OF FERROUS SALTS

TURQUOISE COLOURED PIGMENTS

ARTICLE IN PARTICULAR INCLUDING PARTICLES OF PIGMENT AND A BINDER HAS COMPOSES ORGANIC

L'invention concerne un article constitué d'un mélange liquide ou solide pour un revêtement.L'article (20) comprend des particules (22) et un liant (24) . Il peut se présenter sous la forme d'un feuil de peinture ou d'un film libre. Les particules (22) ont pour composition A [xA1 (1-x) Ga]2 04 (deltaD) où A est du zinc ou du cadmium, la valeur de x est comprise entre 0 et 1, et la valeur de delta est comprise entre 0 et environ 0, 2. Un véhicule pour peinture est également présent habituellement pour conférer la fluidité souhaitée au mélange. La peinture ou le film ainsi obtenu présente une très faible absorptance solaire et peut être rendu électriquement conducteur par dopage des particules (22) avec de l'indium ou un autre dopant approprié.Domaine d'application : peintures et revêtements destinés à produire un effet de régulation thermique, notamment sur des vaisseaux spatiaux, etc.

MATERIAL Of POSITIVE ELECTRODE OPTIMIZES FOR ACCUMULATORS WITH LITHIUM, PROCEDEPOUR SA REALIZATION, ELECTRODE, ACCUMULATOR AND BATTERY IMPLEMENTING CEMATERIAU

Ce matériau ou composé de structure spinelle, a pour formule LiyNi0.5Mn1.5-xlVMnxIIIAzO4-d, avec : - 0,02 ≤ x ≤ 0,35 ; - d≥0; - A choisi dans le groupe comprenant Na, K, Mg, Nb, Al, Ni, Co, Zr, Cr, Fe, Cu, Ti, Zn, Si et Mo ; - 0,8 ≤ y ≤ 1,2 ; - z compris entre 0 et 0.1 ; En outre, il présente un paramètre de maille compris entre 8,174 et 8,179 A.

COMPOSITIONS Of MAGNETIC OXIDES PARTICULATE HAS STRUCTURE OF the LACUNAR SPINEL TYPE, THEIR PREPARATION AND THEIR APPLICATION

MATERIAL WITH MANGANESE DIOXIDE AND ELECTROCHEMICAL CELL CONTAINING THE ELECTROLYTE.

MATERIAL WITH MANGANESE DIOXIDE AND ELECTROCHEMICAL CELL CONTAINING THE ELECTROLYTE.

MATERIAL WITH MANGANESE DIOXIDE AND ELECTROCHEMICAL CELL CONTAINING THE ELECTROLYTE.

MATERIAL WITH MANGANESE DIOXIDE AND ELECTROCHEMICAL CELL CONTAINING THE ELECTROLYTE.

MATERIAL WITH MANGANESE DIOXIDE AND ELECTROCHEMICAL CELL CONTAINING THE ELECTROLYTE.

우수한 고속 성능을 갖는 나노구조 Li4Ti5O12의 제조

... 나노구조 티탄산 리튬 입자의 제조 공정이 개시된다. 상기 공정은 연질 주형 화합물, 리튬 이온 함유 화합물 및 티타늄 이온 함유 화합물을 함유하는 용매를 제공하는 단계, 상기 용매를 제거하여 티탄산 리튬 전구물을 수득하는 단계 및 상기 전구물을 하소시킨 후 밀링 및 어닐링하는 단계를 포함한다. 이러한 공정에 의해 제조된 나노구조 티탄산 리튬 입자가 또한 개시된다.

SPINEL TYPE LITHIUM-TRANSITION METAL OXIDE

METAL OXIDE POWDER AND METHOD THEREOF

Nonaqueous Electrolyte Battery, Lithium-Titanium Composite Oxide, Battery Pack and Vehicle

Cathode active material of 5V spinel structure, and method of fabricating of the same

METAL OXIDE PARTICLES

Manganese oxide particles and lithium manganese oxide particles have been produced with an average diameter less than about 500 nm. The particles have a high degree of uniformity including a very narrow distribution of particles sizes. Methods are described for producing metal oxides by performing a reaction with an aerosol including a metal precursor. In particular, the particles can be formed by laser pyrolysis. The lithium manganese oxide particles can be formed by the heat treatment of nanoparticles of manganese oxide. Alternatively, lithium manganese oxide particles can be formed directly by laser pyrolysis. The lithium manganese oxide particles are useful as active materials in the positive electrodes of lithium based batteries. Improved batteries result from the use of the uniform nanoscale lithium manganese oxide particles. © KIPO & WIPO 2007 ...

SUPERPARAMAGNETIC OR FERRIMAGNETIC FERRITE NANOPARTICLE OF CUBE OR OCTAHEDRON SHAPE AND A METHOD FOR MANUFACTURING THE SAME

PURPOSE: A ferrite nanoparticle of cube or octahedron shape and a method for manufacturing the same are provided to control magnet direction of the nanoparticles and store information. CONSTITUTION: A ferrite nanocube is superparamagnetic or ferromagnetic. The ferrite is Fe_3O_4, bimetallic ferrite, or Fe_3O_4 on which metal is doped. The bimetallic ferrite is selected from the group consisting of CoFe_2O_4, MnFe_2O_4, NiFe_2O_4, ZnFe_2O_4 and BaFe_12O_19. The metal is selected from the group consisting of Co, Mn, Ni, Zn, and Ba. A cubic array contains ferromagnetic ferrite nanocube. A method for manufacturing the ferrite nanocube comprises a step of heating mixture of metal precursor, surfactant, and solvent. COPYRIGHT KIPO 2010 ...

POWDERED LITHIUM TRANSITION METAL OXIDE HAVING DOPED INTERFACE LAYER AND OUTER FILM WITHIN, AND METHOD FOR MANUFACTURING THE SAME

PURPOSE: Provided is a powdered lithium transition metal oxide which is stable in a thermodynamic and mechanical manner and is used as a cathode active material, and more is manufactured by a simple process. CONSTITUTION: The powdered lithium transition metal oxide includes: a lithium transition metal oxide particle; an interface layer, which is formed near by the surface of the lithium transition metal oxide particle and on which a cation is doped; an outer film, which is stable in a thermodynamic and mechanical manner. The cation-doped interface layer is a reaction product of the lithium transition oxide and the strong lithium receptor compound which supplies the cation. © KIPO 2006 ...

Corpos contendo argila aniÈnica formada in situ

Spray pyrolysis synthesis of mesoporous positive electrode materials for high energy lithium-ion batteries

A lithium metal oxide positive electrode material useful in making lithium-ion batteries that is produced using spray pyrolysis. The material comprises a plurality of metal oxide secondary particles that comprise metal oxide primary particles, wherein the primary particles have a size that is in the range of about 1 nm to about 10 m, and the secondary particles have a size that is in the range of about 10 nm to about 100 m and are uniformly mesoporous.

Process for preparing magnetic (Fe3O4) and derivatives thereof

MAGNETIC NANOPARTICLES FOR THE APPLICATION IN HYPERTHERMIA, PREPARATION THEREOF AND USE IN CONSTRUCTS HAVING A PHARMACOLOGICAL APPLICATION

There are described nanoparticles of magnetic metal oxides employable in constructs consisting in polymer particles possibly also incorporating pharmacologically active substances.

NANO-SCALE SELF ASSEMBLY IN SPINELS INDUCED BY JAHN-TELLER DISTORTION

A method for making a self-assembled spinel having an ordered nanocrystal superlattice. The method may involve the steps of providing an oxide mixture that is capable of forming a spinel having Jahn-Teller ions; sintering or heat-treating the mixture to form the spinel having the Jahn-Teller ions; and cooling the spinel having the Jahn- Teller ions at a rate of less than 400 °C/hour. Also, a nano-scale spinel formed by self- assembly. The nano-scale spinel may include a first phase of spinel comprising a high concentration of Jahn-Teller ions; and a second phase of spinel including a low concentration of Jahn-Teller ions. Further, a high density storage device including a nano-scale spinel formed by self-assembly, the nano-scale spinel including a first phase of spinel comprising a high concentration of Jahn-Teller ions; and a second phase of spinel including a low concentration of Jahn-Teller ions.

NANOMETRIC-SIZED CERAMIC MATERIALS, PROCESS FOR THEIR SYNTHESIS AND USES THEREOF

The present invention concerns nanometric-sized ceramic materials in the form of multiple crystalline structures, composites, or solid solutions, the process for their synthesis, and uses thereof. These materials are mainly obtained by detonation of two water-in-oil (W/O) emulsions, one of which is prepared with precursors in order to present a detonation regime with temperature lower than 2000°C, and they present a high chemical and crystalline phase homogeneity, individually for each particle, as well as a set of complementary properties adjustable according to the final applications, such as a homogeneous distribution of the primary particles, very high chemical purity level, crystallite size below 50 nm, surface areas by mass unit between 25 and 500 m2/g, and true particle densities higher than 98% of the theoretical density. This set of characteristics makes this materials particularly suitable for a vast range of applications in the nanotechnology field, such as, for example, nanocoatings ...

CATHODE COMPOSITIONS FOR LITHIUM ION BATTERIES

A cathode composition for a lithium ion battery that contains lithium having the formula (a) Li¿y?[M?1¿¿(1-b)?Mn¿b?]O¿2? or (b) Li¿y?[M?1¿¿(1-b)?Mn¿b?]O¿1.5+C? where 0≤y<1, 0 Подробнее

ELECTRODE MATERIALS FOR MAGNESIUM BATTERIES

A compound of formula Ab'MgaMbXy for use as electrode material in a magnesium battery, wherein A is one or more dopants selected from the group consisting of Al, Li, Na, K, Zn, Ag, Cu, and mixtures thereof; M is one or more transition metals selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Ag, Zr, and mixtures thereof; X is one or more anions selected from the group consisting of O, S, Se, F, and mixtures thereof; 0≤ b'≤ 2.9; 0≤ a≤ 2.1; 0.5≤b≤2.9; 1.5≤y≤5.9; and the compound has a layered structure or a spinel structure. Additionally, a compound of formula Ab'MgaMb(XOz)y for use as electrode material in a magnesium battery, wherein A is one or more dopants selected from the group consisting of Al, Li, Na, K, Zn, Ag, Cu, and mixtures thereof; M is one or more transition metals selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Sn, Sb, Bi, Ta, W, and mixtures thereof; X is one or more anions selected from the group consisting of P, V, Si, B, C ...

THERMAL INSULATING MATERIAL AND METHOD FOR PRODUCING SAME

The invention relates to a thermochemically stable oxidic thermal insulating material presenting phase stability, which can be used advantageously as a thermal insulating layer on parts subjected to high thermal stress, such as turbine blades or such like. The thermal insulating material can be processed by plasma spraying and consists preferably of a magnetoplumbite phase whose preferred composition is MMeAl11O19, where M is La or Nd and where Me is chosen from among the alkaline earth metals, transitional metals and rare earths, preferably from magnesium, zinc, cobalt, manganese, iron, nickel and chromium.

NOVEL PROCESS FOR PREPARING SPINEL TYPE LITHIUM MANGANESE COMPOSITE OXIDE AND CATHODE ACTIVE MATERIAL FOR RECHARGEABLE BATTERY

An improved process for preparing a spinel type lithium manganese composite oxide represented by the general formula (I): LixMn(2-y)My1By2O4 wherein M represents at least one member selected from among Al, Cr, Fe, Ni, Co, Ga, and Mg; 0.9 x 1.1; and y = y1 + y2, wherein 0.002 y 0.5, 0 y1 < 0.5, and 0.002 y2 0.1 or represented by the general formula (Ia) LixMn(2-y)MyO4, which is the same as the general formula (I) except that y2 is 0. In formula (Ia) M and x are each as defined above and 0.002 y 0.5; and a cathode active material for a lithium ion rechargeable battery comprising the spinel type lithium manganese composite oxide having improved charge-discharge characteristics produced by the above method. The composite oxide thus produced is a novel one improved in cycle characteristics, particularly in charge-discharge cycle characteristics in a high-temperature (50 °C or above) environment, and hence is very useful from the viewpoint of industry.

Manganese oxide composite electrodes for lithium batteries

An activated electrode for a non-aqueous electrochemical cell is disclosed with a precursor thereof a lithium metal oxide with the formula xLi₂MnO₃.(1-x)LiMn_2-yM_yO₄ for 0.52MnO₃ and LiMn_2-yM_yO₄ components have layered and spinel-type structures, respectively, and in which M is one or more metal cations. The electrode is activated by removing lithia, or lithium and lithia, from the precursor. A cell and battery are also disclosed incorporating the disclosed positive electrode.

Separation of carbon dioxide from gas mixtures by calcium based reaction separation

A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas/fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRSCO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCOa). Once spent, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The regenerated CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRSCO2 process. This process also identifies the application of a mesoporous CaCO3 structure, developed by a process ...

Method of treating lithium manganese oxide spinel

A method of treating lithium manganese oxide of spinel structure is disclosed. The method involves heating the lithium manganese oxide spinel in an atmosphere of an inert gas which does not react with the spinel. Such gases may be selected advantageously from argon, helium, nitrogen, and carbon dioxide. Preferred nonreacting gases which may be employed for spinel treatment are nitrogen or carbon dioxide. The spinel is advantageously treated with such gases at elevated temperatures. Alternatively, the spinel may be first coated with a hydroxide, preferably lithium, sodium or potassium hydroxide and then heated in an atmosphere of carbon dioxide gas at elevated temperatures. Such treatment of lithium manganese oxide spinel has been determined to improve the performance of the spinel when employed as an electrode in rechargeable cells such as lithium-ion cells.

Process for producing iron oxide products from waste liquids containing ferrous salts

The processes for producing iron oxide products from a solution of ferrous salts selected from the group consisting of waste liquid containing ferrous salts and aqueous solution in which ferrous salts obtained from the waste liquid are dissolved, under the acid, wet and high ferrous concentration conditions. More particularly, the processes for purifying said waste liquids comprising the bivalent iron removing steps.

Method of making beta ''-alumina

The invention provides a method of making beta ''-alumina by heating aluminium oxide in the presence of Na2O. A metal oxide dopant in the form of Li2O, MgO, ZnO, CoO, NiO, FeO or mixtures thereof, or a precursor of the dopant, is dispersed in a cubic-close packed aluminium oxide or a precursor thereof to form a starting mixture which is calcined by heating to 250 DEG -1100 DEG C. in an oxygen-containing atmosphere. Na2O is then dispersed in the calcined starting mixture to form a final mixture, and the final mixture is heated in an oxygen-containing atmosphere to above 1100 DEG C. to produce beta ''-alumina.

Rechargeable spinel lithium batteries with greatly improved elevated temperature cycle life

The loss in delivered capacity (capacity fade) after cycling non-aqueous rechargeable lithium manganese oxide batteries at elevated temperatures can be greatly reduced by depositing a small amount of certain foreign metal species on the surface of spinel in the cathode. In particular the foreign metal species are from compounds having either bismuth, lead, lanthanum, barium, zirconium, yttrium, strontium, zinc or magnesium. The foreign metal species are introduced to the surface of spinel by moderately heating either an aqueous treated mixture or a dry mixture of ready-made spinel and the foreign metal compound.

Cathode active material for lithium secondary battery

The present invention provides a cathode active material for a lithium secondary battery containing therein an open pore having a protrusion which is formed so as to extend from the inner surface of the open pore toward the center of the open pore. Specifically, the protrusion is formed so as to extend toward the center of a virtual circle formed by approximating the shape of a cross section of the open pore to a circular shape. The protrusion is formed of the same material as the remaining portion of the cathode active material.

Spinel-Type Lithium Titanium Oxide/Graphene Composite and Method of Preparing the Same

A spinel-type lithium titanium oxide/graphene composite and a method of preparing the same are provided. The method can be useful in simplifying a manufacturing process and shortening a manufacturing time using microwave associated solvothermal reaction and post heat treatment, and the spinel-type lithium titanium oxide/graphene composite may have high electrochemical performances due to its excellent capacity and rate capability and long lifespan, and thus be used as an electrode material of the lithium secondary battery.

High power, wide-temperature range electrode materials, electrodes, related devices and methods of manufacture

The present invention is generally directed to the field of lithium-ion batteries. It is more specifically directed to electrode materials used in lithium ion batteries, electrodes including the materials, devices incorporating the electrodes and related methods of manufacture. In a composition aspect of the present invention, a composition comprising at least 50 mg of Li 4 Ti 5 O 12 or doped Li 4 Ti 5 O 12 is provided. The Li 4 Ti 5 O 12 or doped Li 4 Ti 5 O 12 is made using a thermal spray process, and is greater than 95% spinel crystal form. The BET surface area of the Li 4 Ti 5 O 12 or doped Li 4 Ti 5 O 12 is greater than 1 m 2 /g.

Spray Pyrolysis Synthesis of Mesoporous Positive Electrode Materials for High Energy Lithium-Ion Batteries

A lithium metal oxide positive electrode material useful in making lithium-ion batteries that is produced using spray pyrolysis. The material comprises a plurality of metal oxide secondary particles that comprise metal oxide primary particles, wherein the primary particles have a size that is in the range of about 1 nm to about 10 μm, and the secondary particles have a size that is in the range of about 10 nm to about 100 μm and are uniformly mesoporous.

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 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.

Lithium battery

A lithium battery includes a cathode containing a lithium manganese oxide with a spinel structure; an anode; and an electrolyte. When stored at a temperature of about 50° C. or greater for about 7 days or longer in a charged state, the lithium manganese oxide with the spinel structure has a peak intensity ratio of the 660 cm −1 peak to the 590 cm −1 peak (I(660)/I(590)) in the Raman spectrum of about 0 to about 2. The electrolyte includes a mixed solvent of a high-k solvent and a low-boiling-point solvent in a volumetric ratio of from about 1:9 to about 4:6, and a lithium salt at a concentration of about 0.5M to about 2M.

Lithium titanate particles and process for producing the lithium titante particles, MG-Containing lithium titanate particles and process for producing the MG-Containing lithium particles, negative electrode active substance particles for non-aqueous electrolyte secondary batteries, and non-aqeous electrolyte secondary battery

According to the present invention, there are provided lithium titanate particles which exhibit an excellent initial discharge capacity and an enhanced high-efficiency discharge capacity retention rate as an active substance for non-aqueous electrolyte secondary batteries and a process for producing the lithium titanate particles, and Mg-containing lithium titanate particles. The present invention relates to lithium titanate particles with a spinel structure comprising TiO 2 in an amount of not more than 1.5%, Li 2 TiO 3 in an amount of not less than 1% and not more than 6%, and Li 4 Ti 5 O 12 in an amount of not less than 94% and not more than 99% as determined according to Rietveld analysis when indexed with Fd-3m by XRD, and having a specific surface area of 7 to 15 m 2 /g as measured by BET method, a process for producing lithium titanate particles comprising the steps of adding and mixing a water-soluble lithium solution into a water suspension of an oxide of titanium having a BET specific surface area of 40 to 400 m 2 /g and a primary particle diameter of 5 to 50 nm and subjecting the resulting mixed suspension to aging reaction at a temperature of 50 to 100° C.; subjecting the resulting reaction product to filtration, drying and pulverization; and subjecting the obtained dry particles to heat-calcination treatment at a temperature of 550 to 800° C., and Mg-containing lithium titanate particles having a composition represented by the formula: Li x Mg y Ti z O 4 wherein x, z>0; 0.01≦y≦0.20; 0.01≦y/z≦0.10; and 0.5≦(x+y)/z≦1.0, the Mg-containing lithium titanate particles having a BET specific surface area of 5 to 50 m 2 /g, a spinel single phase as a crystal structure, and a lattice constant (a) represented by a value of 0.050y+8.3595<a≦0.080y+8.3595 (Å).

Method for the production of an lmo product

A fused product including lithium-manganese spinel, which is optionally doped, having a spinel structure AB 2 O 4 , where the site A is occupied by lithium and the site B is occupied by manganese, it being possible for the site B to be doped with an element B′ and it being possible for the site A to exert a substoichiometry or a superstoichiometry with respect to the site B, so that the product observes the formula Li (1+x) Mn (2−y) B′ y O 4 , with −0.20≦x≦0.4 and 0≦y≦1, the element B′ being chosen from aluminum, cobalt, nickel, chromium, iron, magnesium, titanium, vanadium, copper, zinc, gallium, calcium, niobium, yttrium, barium, silicon, boron, zirconium and their mixtures.

Superhard carbon nitride and method for producing the same

C 3 N 4 of the present invention has a Mn 3 O 4 type crystal structure to thereby have a bulk modulus higher than that of diamond.

Lithium-manganese composite oxide and method for producing same, and positive electrode material, positive electrode and lithium ion secondary battery using same

A lithium-manganese composite oxide containing a lithium-iron-manganese composite oxide represented by the composition formula: Li 1+x−w (Fe y Ni z Mn 1−y−z ) 1−x O 2−δ , where 0<x<⅓, 0≤w<0.8, 0<y<1, 0<z<0.5, y+z<1, and 0≤δ<0.5, in which at least in a state of charge of a lithium ion battery using the lithium-manganese composite oxide as a positive-electrode active material, at least some of iron atoms are pentavalent.

Method of Producing Magnesium Aluminate Spinels

The invention provides for a method of making a magnesium aluminate spinel including an alumina compound and a magnesium compound, the method including the steps of; dispersing the alumina compound by dispersing it in a aqueous solution, to form an alumina dispersion, the aqueous solution having a pH of between 2 and 5; preferably between 2 and 4, flocculating the alumina by increasing the pH of the alumina dispersion to a pH of between 8 and 10 by adding a base; adding the alumina dispersion to an aqueous dispersion of the magnesium compound to form a slurry; drying the slurry to produce a dried spinel precursor; and calcining the dried spinel precursor to produce the magnesium aluminate spinel. Dispersing at such a low pH results in a conversion to spinel as well as allows for the control of the surface area of the spinel. 1. A method of making a magnesium aluminate spinel including an alumina compound and a magnesium compound , the method including the steps of:a) dispersing the alumina compound in an aqueous solution, to form an alumina dispersion, the aqueous solution having a pH of between 2 and 5;b) flocculating the alumina by adding a base to increase the pH of the alumina dispersion to a pH of between 8 and 10;c) adding the alumina dispersion to an aqueous dispersion of the magnesium compound to form a slurry;d) drying the slurry to produce a dried spinel precursor; ande) calcining the dried spinel precursor to produce the magnesium aluminate spinel.2. The method of wherein the alumina is dispersed in step a) at a pH of between 2 and 4.3. The method of claim 1 , wherein the alumina compound includes aluminum oxyhydroxide claim 1 , aluminum oxide claim 1 , aluminum hydroxide or mixtures thereof.4. The method of claim 1 , wherein the alumina compound is selected from Boehmite claim 1 , Bayerite claim 1 , Gibbsite claim 1 , gamma-alumina claim 1 , transitional (delta-theta) aluminas and mixtures thereof.5. The method of claim 4 , wherein the alumina compound ...

PROCESS FOR REMOVING METHOXYETHANOL FROM A MIXTURE COMPRISING METHOXYETHANOL AND MORPHOLINE

A method for removing methoxyethanol from a mixture comprising methoxyethanol and morpholine makes use of the selective adsorption of methoxyethanol onto a mixed oxide comprising a spinel phase. The mixed oxide comprises 20 to 30% by weight MgO and 80 to 70% by weight AlO. The spinel phase has the formula MgAlO. The mixture is a pre-purified reaction output of the reaction of diethylene glycol with ammonia in the presence of an amination catalyst. 1. A method for removing methoxyethanol from a mixture comprising methoxyethanol and morpholine by selective adsorption of methoxyethanol onto a mixed oxide comprising a spinel phase.2. The method according to claim 1 , wherein the spinel phase has the formula{'br': None, 'sub': 2', '4, 'ABO'}in whichA is a divalent cation; andB is a trivalent or tetravalent cation.3. The method according to claim 2 , wherein the spinel phase has the formula MgAlO.4. The method according to claim 3 , wherein the mixed oxide comprises 20 to 30% by weight MgO and 80 to 70% by weight AlO.5. The method according to claim 1 , wherein the mixture is passed over a bed of the mixed oxide.6. The method according to claim 1 , wherein the mixture comprises in addition at least one component selected from 1 claim 1 ,2-ethylenediamine claim 1 , methoxyethylmorpholine and formylmorpholine.7. The method according to claim 1 , wherein the mixture is dried prior to the selective adsorption.8. The method according to claim 7 , wherein the mixture is dried by bringing it into contact with a molecular sieve.9. The method according to claim 1 , wherein the mixed oxide is regenerated by treatment with water.10. The method according to claim 9 , wherein coadsorbed morpholine is desorbed prior to the regeneration of the mixed oxide.11. The method according to claim 10 , wherein coadsorbed morpholine is desorbed by passing over an inert gas or an inert gas containing steam.12. The method according to claim 11 , wherein the desorbed coadsorbed morpholine is ...

MAGNETO-DIELECTRIC MATERIALS, METHODS OF MAKING, AND USES THEREOF

A magnetic fiber comprises a core comprising a spinel ferrite of formula MeMFeO, wherein Me is Mg, Mn, Fe, Co, Ni, Cu, Zn, or a combination thereof, x=0 to 0.25, and y=1.5 to 2.5, wherein the core is solid or at least partially hollow; and a shell at least partially surrounding the core, and comprising a MeMFealloy, wherein when the core is solid with Me=Ni and x=0 the magnetic fiber has a diameter of greater than 0.3 micrometer. A magneto-dielectric material having a magnetic loss tangent of less than or equal to 0.03 at 1 GHz comprises a polymer matrix; and a plurality of the magnetic fibers. 1. A magnetic fiber , comprising:{'sub': 1-x', 'x', 'y', '4, 'claim-text': Me is Mg, Mn, Fe, Co, Ni, Cu, Zn, or a combination thereof,', 'M is Zn, Mg, Co, Cu, Al, Cr, Mn, or a combination thereof,', 'x=0 to 0.25, and', 'y=1.5 to 2.5,, 'a core comprising a spinel ferrite of formula MeMFeO, wherein'}wherein the core is solid or at least partially hollow; and{'sub': 1-x', 'x', 'y, 'a shell at least partially surrounding the core, and comprising a MeMFealloy,'}wherein when the core is solid with Me=Ni and x=0 the magnetic fiber has a diameter of greater than 0.3 micrometer.2. The magnetic fiber of claim 1 , having a diameter of 0.1 micrometer to 20 micrometers.3. The magnetic fiber of claim 1 , wherein the core is in the form of a tube.4. The magnetic fiber of claim 1 , wherein the core is the form of a tube and the inner diameter of the core has an average value of 0.01 micrometer to 3 micrometers.5. The magnetic fiber of claim 1 , wherein the core is solid.6. The magnetic fiber of claim 1 , having a length of 0.5 micrometer to 5000 micrometers.7. The magnetic fiber of claim 1 , having an aspect ratio of 5 to 20 claim 1 ,000.8. The magnetic fiber of claim 1 , wherein the spinel ferrite has an average grain size of 10 nanometers to 500 nanometers.9. The magnetic fiber of claim 1 , wherein the shell thickness is 20 nanometers to 2 micrometers.10. A method of making the magnetic ...

Lithium-excess transition-metal-deficient spinels for fast charging/discharging lithium-ion battery materials

Li-ion battery materials, such as Li-ion cathodes, are provided that have spinels characterized by a close-packed face-centered-cubic rocksalt-type structure and spinel-like ordered TM (the TM preferably occupying one of the two octahedral sites 16c and 16d) that favor fast Li transport kinetics. Such spinels have a larger deviation from a normal spinel and have a formula. Li 1+x TM 2-y O 4-z F z where 0.2≤x≤1, 0.2≤y≤0.6, and 0≤z≤0.8; and TM is Mn, Ni, Co, Al, Sc, Ti, Zr, Mg, Nb, or a mixture thereof. The spinels achieve a higher gravimetric energy density than traditional spinels while still retaining high capacity at an extremely fast charging/discharging rate.

METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND SECONDARY BATTERY

A positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charging and discharging as compared with those of a known positive electrode active material. In order to form the positive electrode active material having the pseudo-spinel crystal structure in the charged state, it is preferable that a halogen source such as a fluorine and a magnesium source be mixed with particles of a composite oxide containing lithium, a transition metal, and oxygen, which is synthesized in advance, and then the mixture be heated at an appropriate temperature for an appropriate time. 1. A lithium-ion secondary battery comprising:a positive electrode active material,wherein the positive electrode active material comprises a path through which lithium is inserted and extracted in a region from a surface to a depth of 10 nm, andwherein the positive electrode active material is configured to inhibit dissolution of transition metal from the positive electrode active material.2. A lithium-ion secondary battery comprising:a positive electrode active material comprising lithium, cobalt, and oxygen,wherein the positive electrode active material comprises a path through which lithium is inserted and extracted in a region from a surface to a depth of 10 nm, andwherein the positive electrode active material is configured to inhibit dissolution of the cobalt from the positive electrode active material.3. A lithium-ion secondary battery comprising:a positive electrode active material comprising lithium cobalt oxide,wherein the positive electrode active material comprises a path through which lithium is inserted and extracted in a ...

HIGH-TEMPERATURE THERMOCHEMICAL ENERGY STORAGE MATERIALS USING DOPED MAGNESIUM-TRANSITION METAL SPINEL OXIDES

High-temperature thermochemical energy storage materials using doped magnesium-transition metal spinel oxides are provided. —transition metal spinel oxides, such as magnesium manganese oxide (MgMn)O, are promising candidates for high-temperature thermochemical energy storage applications. However, the use of these materials has been constrained by the limited extent of their endothermic reaction. Embodiments described herein provide for doping magnesium-transition metal spinel oxides to produce a material of low material costs and with high energy densities, creating an avenue for plausibly sized modules with high energy storing capacities. 1. A thermochemical energy storage material , comprising:a magnesium-transition metal spinel oxide; anda dopant metal doping the magnesium-transition metal spinel oxide to enhance thermochemical energy storage.2. The thermochemical energy storage material of claim 1 , wherein the dopant metal comprises a transition metal.3. The thermochemical energy storage material of claim 1 , wherein the dopant metal comprises an alkali metal.4. The thermochemical energy storage material of claim 1 , wherein the dopant metal is a substituting material for at least one of the magnesium or the transition metal of the magnesium-transition metal spinel oxide.5. The thermochemical energy storage material of claim 1 , wherein the dopant metal can take on one of a +2 claim 1 , a +3 claim 1 , a +4 claim 1 , or a +5 oxidation state when the thermochemical energy storage material is in an oxidized form and a +2 state when the thermochemical energy storage material is in a reduced form.6. The thermochemical energy storage material of claim 1 , wherein the magnesium-transition metal spinel oxide comprises magnesium manganese oxide.7. The thermochemical energy storage material of claim 6 , wherein the doping concentration of the dopant metal is between 0.01% and 10%.8. The thermochemical energy storage material of claim 6 , wherein the dopant metal ...

Ni-zn-cu-based ferrite particles, green sheet comprising the ni-zn-cu-based ferrite particles and ni-zn-cu-based ferrite sintered ceramics

An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles.

Synthesis of mesoporous transition metal oxides as anode materials

A method of preparing mesoporous nanostructured particles of a transition metal oxide. The method contains the steps of dissolving a soft-template compound in a solvent, dispersing a first or second row transition metal ion-containing compound, adjusting the pH value if necessary, and removing the solvent to obtain mesoporous nanostructured transition metal oxide powders, calcining the powders optionally to afford mesoporous nanostructured particles of the transition metal oxide. Also disclosed is particle prepared by the above-described method.

One-Pot Synthesis for LiNbO3 Coated Spinel

Provided is an improved method for forming a coated lithium ion cathode materials specifically for use in a battery. The method comprises forming a first solution comprising a digestible feedstock of a first metal suitable for formation of a cathode oxide precursor and a multi-carboxylic acid. The digestible feedstock is digested to form a first metal salt in solution wherein the first metal salt precipitates as a salt of deprotonated multi-carboxylic acid thereby forming an oxide precursor and a coating metal is added to the oxide precursor. The oxide precursor is heated to form the coated lithium ion cathode material. 1. A method of forming a coated lithium ion cathode material comprising:forming a first solution comprising a digestible feedstock of a first metal suitable for formation of a cathode oxide precursor and a multi-carboxylic acid;digesting said digestible feedstock to form a first metal salt in solution wherein said first metal salt precipitates as a salt of deprotonated said multi-carboxylic acid thereby forming an oxide precursor;adding a coating metal precursor salt after said digestion;heating said oxide precursor to form said lithium ion cathode material with an oxide of said coating metal precursor salt as a coating on said lithium ion cathode material.2. The method of forming a coated lithium ion cathode material of wherein said coating metal precursor salt comprises niobium.3. The method of forming a coated lithium ion cathode material of wherein said oxide of said coating metal precursor salt is lithium niobate.4. The method of forming a coated lithium ion cathode material of wherein said coating metal precursor salt comprises a multi-carbonate salt.5. The method of forming a coated lithium ion cathode material of wherein said multi-carbonate is an oxalate.6. The method of forming a coated lithium ion cathode material of wherein said coating comprises at least 95 wt % said coating metal.7. The method of forming a coated lithium ion cathode ...

METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND SECONDARY BATTERY

A positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charging and discharging as compared with those of a known positive electrode active material. In order to form the positive electrode active material having the pseudo-spinel crystal structure in the charged state, it is preferable that a halogen source such as a fluorine and a magnesium source be mixed with particles of a composite oxide containing lithium, a transition metal, and oxygen, which is synthesized in advance, and then the mixture be heated at an appropriate temperature for an appropriate time. 1. A lithium ion secondary battery comprising:a positive electrode active material comprising lithium, cobalt, and oxygen,wherein dQ/dV vs V curve in a range of greater than or equal to 4.0V and less than or equal to 4.8V which is obtained by differentiating capacitance (Q) with voltage (V) does not have a maximum peak in a range of greater than or equal to 4.5V and less than or equal to 4.7 V.2. A lithium ion secondary battery comprising:a positive electrode active material comprising lithium, cobalt, and oxygen,wherein dQ/dV vs V curve which is obtained by differentiating capacitance (Q) with voltage (V) has a peak in a range of greater than or equal to 4.5V and less than or equal to 4.7V, andwherein the peak is not a maximum peak in a range of greater than or equal to 4.0V and less than or equal to 4.8V.3. A lithium ion secondary battery comprising:a positive electrode active material comprising lithium, cobalt, and oxygen,wherein dQ/dV vs V curve which is obtained by differentiating capacitance (Q) with voltage (V) has a peak in a range ...

Metal oxide and method for preparing the same

This application relates to a metal oxide and a method for preparing the same. Specifically, Co 3 O 4 is selected as a precursor of lithium cobalt oxide, and one or more metal elements M are doped in the particles of Co 3 O 4 to obtain a doped lithium cobalt oxide precursor Co 3−x M x O 4 , where 0<x≤0.3. The difference value, measured by a spectrometer of a scanning electron microscope, of the weight percentage of one of M in two identical area regions is E, wherein 0<E≤1% (wt. %). A lithium ion battery with lithium cobalt oxide prepared from the precursor as a cathode material shows great cycle stability, high-temperature energy storage performance and safety performance in a high-voltage (equal to or greater than 4.45 V) charging and discharging environment.

Melted magnesium aluminate grain rich in magnesium

A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of MgAl2O4 spinel structure and/or of the MgO—MgAl2O4 eutectic structure, and of inclusions essentially composed of magnesium oxide. The grain has the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 5.0% and less than 19.9% of Al2O3, Al2O3 and MgO together represent more than 95.0% of the weight of the grain. The cumulative content of CaO and of ZrO2 is less than 4000 ppm, by weight.

Method for the use of slurries in spray pyrolysis for the production of non-hollow, porous particles

A process for preparing a metal oxide-containing powder that comprises conducting spray pyrolysis that comprises aerosolizing a slurry that comprises solidphase particles in a liquid that comprises at least one precursor compound, which comprises one or more metallic elements of at least one metal oxide, to form droplets of said slurry, and calcining the droplets to at least partially decompose the at least one precursor compound and form the metal oxide-containing powder having a non-hollow morphology.

Alternative One-Pot Process for Making a Cam Precursor Using Metal Feedstocks

The present invention provides a method for forming a lithium ion cathode material. The method comprises reacting elemental metal with a multi-carboxylic acid to form an oxide precursor and heating the oxide precursor to form the lithium ion cathode material. In a preferred embodiment the elemental mixture comprises at least two of Ni, Mn, Co and Al.

Spinel-Type Lithium-Manganese-Containing Complex Oxide

Provided is a spinel-type lithium-manganese-containing complex oxide that is related to a 5 V-class spinel, and with which output characteristics and charge-discharge cycle ability can be enhanced while suppressing gas generation. Proposed is a spinel-type lithium-manganese-containing complex oxide comprising at least Li, Mn, O, and two or more other elements, and having an operating potential of 4.5 V or more with respect to a metal Li reference potential, wherein: D50 is 0.5 to 9 μm; a value of (|mode diameter−D50|/mode diameter)×100 is 0 to 25%; a value of (|mode diameter−D10|/mode diameter)×100 is 20 to 58%; a ratio of average primary particle diameter/D50, which is calculated from an average primary particle diameter calculated from a SEM image and the D50, is 0.20 to 0.99; and a primary particle is a polycrystal. 1. A spinel-type lithium-manganese-containing complex oxide ,comprising at least Li, Mn, O, and two or more other elements, andhaving an operating potential of 4.5 V or more with respect to a metal Li reference potential,wherein, with regard to a D50, a mode diameter, and a D10 according to a measurement of a volume-based particle size distribution obtained via measurements by a laser diffraction scattering-type particle size distribution measurement method (referred to as “D50”, “mode diameter”, and “D10” respectively),a D50 is 0.5 to 9 μm,a value of (|mode diameter−D50|/mode diameter)×100 is 0 to 25%,a value of (|mode diameter−D10|/mode diameter)×100 is 20 to 58%,a ratio of average primary particle diameter/D50, which is calculated from an average primary particle diameter calculated from a SEM (scanning-type electron microscope) image obtained by a SEM and the D50 is 0.20 to 0.99, anda primary particle is a polycrystal.2. A spinel-type lithium-manganese-containing complex oxide ,comprising at least Li, Mn, O, and two or more other elements, andhaving an operating potential of 4.5 V or more with respect to a metal Li reference potential,wherein, ...

Manganese-Cobalt Spinel Oxide Nanowire Arrays

Manganese-cobalt (Mn—Co) spinel oxide nanowire arrays are synthesized at low pressure and low temperature by a hydrothermal method. The method can include contacting a substrate with a solvent, such as water, that includes MnO4- and Co2 ions at a temperature from about 60° C. to about 120° C. The method preferably includes dissolving potassium permanganate (KMnO4) in the solvent to yield the MnO4— ions. the substrate is The nanoarrays are useful for reducing a concentration of an impurity, such as a hydrocarbon, in a gas, such as an emission source. The resulting material with high surface area and high materials utilization efficiency can be directly used for environment and energy applications including emission control systems, air/water purifying systems and lithium-ion batteries. 1. A method of making a manganese-cobalt (Mn—Co) spinel oxide nanoarray on a substrate , comprising:{'sub': '4', 'sup': −', '2+, 'contacting a substrate with a solvent comprising MnOand Coions at a temperature from about 60° C. to about 120° C.'}2. The method of claim 1 , further comprising dissolving potassium permanganate (KMnO) in the solvent to yield the MnOions.3. The method of claim 1 , further comprising dissolving cobalt nitrate in the solvent to yield the Coions.4. The method of claim 3 , wherein the cobalt nitrate is cobalt nitrate hexahydrate (CO(NO)⋅6HO).5. The method of claim 1 , wherein the solvent is water.6. The method of claim 1 , further comprising varying the concentration of MnOor Coions in the solvent to control deposition rate of the manganese-cobalt spinel oxide nanoarray.7. The method of claim 1 , further comprising controlling the temperature of the solvent to control deposition rate of the manganese-cobalt spinel oxide nanoarray.8. The method of claim 1 , wherein the substrate has a honeycomb structure.9. The method of claim 1 , wherein the substrate is a cordierite honeycomb.10. The method of claim 1 , further comprising contacting a substrate with a solvent ...

SPINEL COMPOUND OXIDE PARTICLE, METHOD FOR PRODUCING THE SAME, RESIN COMPOSITION INCLUDING SPINEL COMPOUND OXIDE PARTICLE, AND MOLDED ARTICLE

A spinel compound oxide particle includes metallic atoms, aluminum atoms, oxygen atoms, and molybdenum atoms, wherein the metallic atoms are selected from the group consisting of zinc atoms, cobalt atoms, and strontium atoms, and a crystallite size in a [111] plane is 100 nm or more. Included are a step (1) of firing a first mixture including a molybdenum compound and a metallic-atom-containing compound or a first mixture including a molybdenum compound, a metallic-atom-containing compound, and an aluminum compound to prepare an intermediate; and a step (2) of firing, at a temperature higher than a temperature selected in the step (1), a second mixture including the intermediate or a second mixture including the intermediate and an aluminum compound. 1. A spinel compound oxide particle comprising: metallic atoms , aluminum atoms , oxygen atoms , and molybdenum atoms ,wherein the metallic atoms are selected from the group consisting of zinc atoms, cobalt atoms, and strontium atoms, anda crystallite size in a [111] plane is 100 nm or more.2. The spinel compound oxide particle according to claim 1 , further comprising a surface-treated layer.3. A method for producing the spinel compound oxide particle according to claim 1 , the method comprising:a step (1) of firing a first mixture (A-1) including a molybdenum compound and a metallic-atom-containing compound or a first mixture (A-2) including a molybdenum compound, a metallic-atom-containing compound, and an aluminum compound to prepare an intermediate; anda step (2) of firing, at a temperature higher than a temperature selected in the step (1), in a case of using the mixture (A-2), a second mixture including the intermediate, or, in a case of using the mixture (A-1), a second mixture including the intermediate and an aluminum compound, to produce a spinel compound oxide particle,wherein the metallic-atom-containing compound is selected from the group consisting of zinc-containing compounds, cobalt-containing compounds ...

Cathode active material particles, lithium ion battery prepared by using the cathode active material particles, and method of preparing the cathode active material particles

A lithium ion secondary battery including: a cathode including a plurality cathode active material particles; an electrolyte; and an anode, wherein a cathode active material particle of the plurality of cathode active material particles has a plate-shaped crystal structure having an aspect ratio of 2 to 1000, wherein a major surface in at least one direction of the plate-shaped crystal structure is a 111 face, wherein the cathode active material particle also has a spinel-type crystal structure, and wherein the cathode active material particle has a composition represented by the formula LiCo 2-x Ni x O 4 , wherein 0<x<2.

PRODUCTION OF COMPOSITE SPINEL POWDERS IN CORE/SHELL STRUCTURE BY FLAME PYROLYSIS METHOD

The present invention relates to a method for the passivation of MgAlO(Mg-spinel) powders against hydrolysis exhibiting in aqueous media by coating the surfaces with AlOduring the synthesis via flame pyrolysis technique. Stable aqueous suspensions with high solid loading and low viscosity can be prepared from coated powders with a core/shell structure of MgO.nAlO(0.65 Подробнее

TITANIUM OXIDE PARTICLES, TITANIUM OXIDE PARTICLE PRODUCTION METHOD, POWER STORAGE DEVICE ELECTRODE INCLUDING TITANIUM OXIDE PARTICLES, AND POWER STORAGE DEVICE PROVIDED WITH ELECTRODE INCLUDING TITANIUM OXIDE PARTICLES

Provided are novel titanium oxide particles, production method thereof, and applications which do not need a conductive aid or minimize the conductive aid. Novel titanium oxide particles employ a three-dimensional network structure in which multiple crystallites are coupled in sequence, and a magneli phase is formed on the surface of the crystallites The crystallites are oriented at random, coupled with each other via pinacoid or end surface, and laminated as the three-dimensional network structure. A large number of spaces in nano size is present in the titanium oxide particles a grain boundary of the bonding interface is eliminated between the crystallites while a large number of pores is present. 1. A titanium oxide particles comprising:a three-dimensional network structure having crystallites of titanium oxide coupled in sequence, wherein a magneli phase is formed on surfaces of the crystallites.2. The titanium oxide particles according to claim 1 , wherein the titanium oxide is lithium titanate represented by a general formula of LiTiO.3. The titanium oxide particles according to claim 2 , wherein the titanium oxide is spinel type lithium titanate represented by LiTiO.4. The titanium oxide particles according to claim 1 , wherein the magneli phase is a titanium oxide represented by a general formula of TiO claim 1 , where 3≦n≦10.5. The titanium oxide particles according to claim 4 , wherein the magneli phase is TiO.6. The titanium oxide particles according to claim 1 , wherein the sequence of crystallites forms an electron path including the magneli phase.7. The titanium oxide particles according to claim 1 , wherein a plurality of spaces is formed in the three-dimensional network structure.8. The titanium oxide particles according to claim 7 , wherein a plurality of pores in communication with an interior of the three-dimensional network structure is formed between the crystallites.9. The titanium oxide particles according to claim 8 , wherein an ion path in ...

SPINEL PARTICLES, METHOD FOR PRODUCING SAME, AND COMPOSITION AND MOLDING INCLUDING SPINEL PARTICLES

Spinel has conventionally been used as mentioned above in applications, such as gems, catalyst carriers, adsorbents, photocatalysts, optical materials, and heat-resistant insulating materials, and is not expected to be used in an application of an inorganic filler having thermal conductive properties. Accordingly, an object of the present invention is to provide spinel particles having excellent thermal conductive properties. A spinel particle having spinel containing a magnesium atom, an aluminum atom, and an oxygen atom, and molybdenum being existed on the surface of and/or in the inside of the spinel, wherein the crystallite diameter of the spinel at the [311] plane is 100 nm or more. 1. A spinel particle comprising spinel containing a magnesium atom , an aluminum atom , and an oxygen atom , andmolybdenum being existed on the surface of and/or in the inside of the spinel,wherein the crystallite diameter of the spinel at the [311] plane is 100 nm or more.2. The spinel particle according to claim 1 , which has an average particle diameter of 0.1 to 1 claim 1 ,000 μm.3. A method for producing the spinel particles according to claim 1 , which comprises:a calcination step for calcining a first mixture containing magnesium molybdate and an aluminum compound; anda cooling step for cooing the calcined material obtained in the calcination step.4. The method according to claim 3 , which further comprises a precursor preparation step for calcining a second mixture containing a molybdenum compound and a magnesium compound to prepare the magnesium molybdate.5. The method according to claim 4 , wherein the molar ratio of a molybdenum element in the molybdenum compound to a magnesium element in the magnesium compound (molybdenum element/magnesium element) is from 0.01 to 10.6. A composition comprising the spinel particles according to and a resin.7. The composition according to claim 6 , which further comprises a curing agent.8. The composition according to claim 6 , which is a ...

Procédé de préparation d'un matériau actif d'électrode positive du type oxyde métallique lithié comprenant du titane

A method for preparing a positive electrode active material for a lithium battery consisting of a lithiated oxide comprising titanium and optionally one or more other metal elements comprising the following successive steps: a) a step of forming a precipitate comprising titanium and the optional other metal element(s) by contacting a titanium coordination complex and, if necessary, at least one salt of the other metal element(s) with an aqueous medium; b) a step of recovering the precipitate thus formed; c) a step of calcining the precipitate in the presence of a lithium source.

Linear hierarchical structure lithium titanate material, preparation and application thereof

A linear hierarchical structure lithium titanate material, preparation and application thereof. The crystal phase of the lithium titanate material is a spinel-type crystal phase or a monoclinic crystal phase or a composite crystal phase thereof; the lithium titanate material is mainly composed of a linear hierarchical structure; the linear hierarchical structure has an aspect ratio larger than 10; and the surface components of the linear hierarchical structure are nanosheets. The long-axis of the linear structure facilitates the effective migration of electrons, and the sheet-like hierarchical structure facilitates the rapid intercalation and deintercalation process of lithium ions, sodium ions or potassium ions, and a large specific surface area facilitates the contact area between the electrolyte solution and the electrodes and reduces the current density, thus is excellent in a rapid charge-discharge performance of the battery.

HIGH ENTROPY COMPOSITE OXIDE, MANUFACTURING METHOD THEREOF, AND ANODE MATERIALS COMPRISING THE SAME

Provided is a high entropy composite oxide of formula ([M]MnFeCrNi)Ohaving a spinel crystal, wherein the [M], p, q, x, y and z are as defined in the specification. A method for producing the high entropy composite oxide, and anode materials including the same are further provided. With the entropy stabilization effect and plenty of oxygen vacancies, the anode materials including the high entropy composite oxide show the advantage of high Li transport rate, high electric capacity, redox durability, and good cycling stability, thereby having a bright prospect for application.

PROCESS FOR PRODUCING MAGNETIC NANOCOMPOSITES AND MAGNETIC NANOCOMPOSITES THEREOF

The invention relates to a method for producing iron oxide-based composite magnetic nanocomposites, for modulating the magnet grade of the magnetic nanocomposites to, for example, a soft magnetic material, or a semi-hard magnetic material, or a hard magnetic material, comprising the following steps:

CORE-SHELL PARTICLE, FIRED PRODUCT OF CORE-SHELL PARTICLE, MANUFACTURING METHOD OF CORE-SHELL PARTICLE, EPSILON TYPE IRON OXIDE-BASED COMPOUND PARTICLE, MANUFACTURING METHOD OF EPSILON TYPE IRON OXIDE-BASED COMPOUND PARTICLE, MAGNETIC RECORDING MEDIUM, AND MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM

The invention provides a core-shell particle which can provide, by being calcinated, epsilon type iron oxide-based compound particles that have a small coefficient of variation of primary particle diameter and show excellent SNR and running durability when employed in a magnetic recording medium as well as applications thereof. The core-shell particle includes: a core including at least one iron oxide selected from FeOor FeO, or iron oxyhydroxide; and a shell that coats the core, the shell including a polycondensate of a metal alkoxide and a metal element other than iron, as well as applications thereof. 1. A core-shell particle comprising:{'sub': 2', '3', '3', '4, 'a core including at least one iron oxide selected from the group consisting of FeOand FeO, or iron oxyhydroxide; and'}a shell that coats the core, the shell including a polycondensate of a metal alkoxide and including a metal element other than iron.2. The core-shell particle according to claim 1 , wherein one core-shell particle comprises one core.3. The core-shell particle according to claim 1 , wherein the metal element is at least one metal element selected from the group consisting of Ga claim 1 , Al claim 1 , In claim 1 , Nb claim 1 , Co claim 1 , Zn claim 1 , Ni claim 1 , Mn claim 1 , Ti and Sn.4. The core-shell particle according to claim 1 , wherein the at least one iron oxide selected from the group consisting of FeOand FeOcomprises a spinel type structure.5. The core-shell particle according to claim 1 , wherein the iron oxyhydroxide comprises β-iron oxyhydroxide.6. The core-shell particle according to claim 1 , wherein the metal alkoxide comprises silicon.7. The core-shell particle according to claim 6 , wherein an element mass ratio of iron with respect to silicon is from 1/2 to 1/15.8. A method of manufacturing a core-shell particle claim 6 , the method comprising:{'sub': 2', '3', '3', '4, 'emulsifying, in an organic solvent including a surfactant, a core component including at least one ...

Active material, positive electrode mixture using same, and solid-state battery

An active material is provided for use in a solid-state battery. The active material exhibits at least one peak in the range of 0.145 to 0.185 nm and at least one peak in the range of 0.280 to 0.310 nm in a radial distribution function obtained through measurement of an X-ray absorption fine structure thereof. In the particle size distribution, by volume, of the active material obtained through a particle size distribution measurement by laser diffraction scattering method, the ratio of the absolute value of the difference between the mode diameter of the active material and the D 10 of the active material (referred to as the “mode diameter” and the “D 10 ” respectively) to the mode diameter in percentage terms, (|mode diameter−D 10 |/mode diameter)×100, satisfies 0%<((|mode diameter−D 10 |/mode diameter)×100)≤58.0%.

LITHIUM MANGANESE OXIDE SPINEL AND MANUFACTURING METHOD THEREFOR

Lithium manganese oxide material used in lithium ion battery is disclosed herein. The lithium manganese oxide material may be doped with suitable dopant. The lithium manganese oxide material may be represented by a first formula of LiMMnO, wherein the value of ‘x’, in the first formula, satisfies a relation −0.1 Подробнее

LITHIUM MANGANATE PARTICLES FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES AND PROCESS FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

The present invention relates to lithium manganate particles for non-aqueous electrolyte secondary batteries, having a spinel structure, an average primary particle diameter of 0.4 to 1.8 μm and an average secondary particle diameter (D50) of 8 to 20 μm, a ratio of the average secondary particle diameter (D50) to the average primary particle diameter (D50/average primary particle diameter) being in the range of 10 to 30, and pore diameters of pores in the lithium manganate particles as measured by a mercury intrusion porosimetry method being in the range of 100 to 500 nm, and a process for producing the lithium manganate particles, and a non-aqueous electrolyte secondary battery. The lithium manganate particles according to the present invention are excellent in high-temperature storage characteristics. 1. Lithium manganate particles for non-aqueous electrolyte secondary batteries , having a spinel structure , an average primary particle diameter of 0.4 to 1.8 μm and an average secondary particle diameter (D50) of 8 to 20 μm , a ratio of the average secondary particle diameter (D50) to the average primary particle diameter (D50/average primary particle diameter) being in the range of 10 to 30 , and pore diameters of pores in the lithium manganate particles as measured by a mercury intrusion porosimetry method being in the range of 100 to 500 nm.2. The lithium manganate particles for non-aqueous electrolyte secondary batteries according to claim 1 , wherein the lithium manganate particles have a specific surface area of 0.20 to 0.7 m/g as measured by BET method claim 1 , and a full width at half maximum (FWHM) on a (400) plane of the lithium manganate particles as measured by XRD (Cu-K ray) is in the range of 0.070 to 0.110°.3. The lithium manganate particles for non-aqueous electrolyte secondary batteries according to claim 1 , wherein a battery assembled with an electrode produced using the lithium manganate particles and a counter electrode formed of lithium claim ...

CATALYST FOR OXIDATIVE DEHYDROGENATION AND METHOD OF PREPARING THE SAME

The present invention relates to a method of preparing a catalyst for oxidative dehydrogenation. More particularly, the method of preparing a catalyst for oxidative dehydrogenation includes a first step of preparing an aqueous iron-metal precursor solution by dissolving a trivalent cation iron (Fe) precursor and a divalent cation metal (A) precursor in distilled water; a second step of obtaining a slurry of an iron-metal oxide by reacting the aqueous iron-metal precursor solution with ammonia water in a coprecipitation bath to form an iron-metal oxide (step b) and then filtering the iron-metal oxide; and a third step of heating the iron-metal oxide slurry. 1. A method of preparing a catalyst for oxidative dehydrogenation , the method comprising:a first step of preparing an aqueous iron-metal precursor solution by dissolving a trivalent cation iron (Fe) precursor and a divalent cation metal (A) precursor in distilled water;a second step of obtaining a slurry of an iron-metal oxide by reacting the aqueous iron-metal precursor solution with ammonia water in a coprecipitation bath to form an iron-metal oxide and then filtering the iron-metal oxide; anda third step of heating the iron-metal oxide slurry.2. The method according to claim 1 , wherein a mole ratio of ions of the ammonia water supplied in the second step to iron-metal cations in the aqueous iron-metal precursor solution is greater than 100:22 and less than 100:26.3. The method according to claim 1 , wherein claim 1 , before the filtering of the iron-metal oxide obtained in the second step claim 1 , stirring and aging steps are further performed.4. The method according to claim 3 , wherein claim 3 , when the filtering is performed claim 3 , washing is not performed.5. The method according to claim 1 , wherein the heating of the iron-metal oxide slurry in the third step comprises drying and firing.6. The method according to claim 1 , wherein a ratio of an iron (Fe) atom number to a metal (A) atom number in an ...

MODIFIED NI-ZN FERRITES FOR RADIOFREQUENCY APPLICATIONS

Embodiments disclosed herein relate to using cobalt (Co) to fine tune the magnetic properties, such as permeability and magnetic loss, of nickel-zinc ferrites to improve the material performance in electronic applications. The method comprises replacing nickel (Ni) with sufficient Cosuch that the relaxation peak associated with the Cosubstitution and the relaxation peak associated with the nickel to zinc (Ni/Zn) ratio are into near coincidence. When the relaxation peaks overlap, the material permeability can be substantially maximized and magnetic loss substantially minimized. The resulting materials are useful and provide superior performance particularly for devices operating at the 13.56 MHz ISM band. 1. (canceled)2. A fine-tuned nickel-zinc ferrite material comprising:{'sup': '2+', 'sub': 1-x-y', 'x', 'y', '2', '4, 'a base nickel-zinc ferrite material doped with cobalt (CO) to adjust a nickel to zinc ratio of the base nickel-zinc ferrite material thereby providing a Ni/Zn relaxation absorption peak at a desired frequency above a desired low magnetic loss frequency, the cobalt being doped into the base nickel-zinc ferrite material to a level where a cobalt dominated relaxation peak merges into a low frequency end of the Ni/Zn relaxation absorption peak, the fine-tuned nickel-zinc ferrite material being represented by the formula NiZnCoFeO, x being between 0.2 and 0.6, and y being between 0 and 0.2'}3. The fine-tuned nickel-zinc ferrite material of wherein the fine-tuned nickel-zinc ferrite material has a composition NiCoZnFeO.4. The fine-tuned nickel-zinc ferrite material of wherein the base nickel-zinc ferrite material has a composition NiZnFeO.5. The fine-tuned nickel-zinc ferrite material of wherein the fine-tuned nickel-zinc ferrite material has a permeability in excess of 100.6. The fine-tuned nickel-zinc ferrite material of wherein the desired frequency is about 100 MHz.7. A radiofrequency component comprising:{'sup': '2+', 'sub': 1-x-y', 'x', 'y', '2', '4, ...

Production of nanostructured li4ti5o12 with superior high rate performance

A process of preparing nanostructured lithium titanate particles. The process contains the steps of providing a solvent containing a soft-template compound, a lithium ion-containing compound, and a titanium ion-containing compound; removing the solvent to obtain a lithium titanate precursor; and calcining the precursor followed by milling and annealing. Also disclosed is a nanostructured lithium titanate particle prepared by this process.

Ceramic Material, Component, and Method for Producing the Component

A ceramic material, a component, and a method for producing a component are disclosed. In an embodiment a ceramic material includes a structure based on a system selected from the group consisting of Ni—Co—Mn—O, Ni—Mn—O and Co—Mn—O, and at least one dopant selected from lanthanides, wherein the ceramic material has a negative temperature coefficient of an electrical resistance.

BLACK MIXED OXIDE MATERIAL AND METHOD FOR MANUFACTURING SAME

Provided are a black mixed oxide that contains chromium per se of any valency as a main component, and fails to contain cobalt as the main component material, and has a high safety, an excellent color tone and economical efficiency, and a method for producing the same, and various products using the black mixed oxide material. The mixed oxides comprise oxides containing La, Mn and Cu as main components but containing neither Cr nor Co as a main component, wherein the contents of La, Mn and Cu in the mixed oxides satisfy the following ratios, as oxide equivalent amount with respect to 100% by weight of the oxide equivalent amount: the La content as LaObeing 35-70 wt %; the Mn content as MnObeing 25-60 wt %; and the Cu content as CuO being 0.5-10 wt %. 1. A black pigment containing an oxide containing La , Mn and Cu as main components , and not containing Cr and Co as the main components , wherein{'sub': 3', '4', '2', '3', '2, 'Mn is made from MnO, the contents of La, Mn, and Cu in the black pigment satisfy the following ratio: 35 to 70% by weight as LaO; and 25 to 60% by weight as MnO; and 0.5 to 10% by weight as CuO, respectively, as oxide equivalent amounts in which the total weight is 100% by weight,'}the black pigment has an average particle size of 20 urn or less,the black pigment in a L*a*b* color system pursuant to JIS-Z-8729 presents a black color with the degree of black (L value) of 25.0 or less,the black pigment has a perovskite phase exhibiting a maximum intensity diffraction peak in a range of 31° to 34° of a diffraction angle 2θ in X-ray diffraction measurement using CuKα ray as an X-ray source, and{'sub': 3', '4, 'the black pigment contains MnOthat has a spinel structure, as an oxide of Mn.'}23.-. (canceled)4. The black pigment according to claim 1 , whereinthe black pigment further contains an oxide of Mo as the main component, and{'sub': 2', '3', '2', '3, 'in an oxide equivalent amount in which the total weight of three kinds of oxides that are LaOas ...

USE OF IONIC LIQUIDS IN COMPOSITIONS FOR GENERATING OXYGEN

The present invention is directed to the use of an ionic liquid as a dispersant or solvent and as a heat sink in a composition for generating oxygen, the composition further comprising at least one oxygen source formulation, and at least one metal oxide compound formulation, wherein the oxygen source formulation comprises a peroxide compound, the ionic liquid is in the liquid state at least in a temperature range from −10° C. to +50° C., and the metal oxide compound formulation comprises a metal oxide compound which is an oxide of one single metal or of two or more different metals, said metal(s) being selected from the metals of groups 2 to 14 of the periodic table of the elements. 1. Use of an ionic liquid as a dispersant or solvent and as a heat sink in a composition for generating oxygen , the composition further comprising at least one oxygen source formulation , andat least one metal oxide compound formulation, whereinthe oxygen source formulation comprises a peroxide compound,the ionic liquid is in the liquid state at least in a temperature range from −10° C. to +50° C., andthe metal oxide compound formulation comprises a metal oxide compound which is an oxide of one single metal or of two or more different metals, said metal(s) being selected from the metals of groups 2 to 14 of the periodic table of the elements.2. The use according to claim 1 , wherein the peroxide compound is selected from alkali metal percarbonates claim 1 , alkali metal perborates claim 1 , urea hydrogen peroxide claim 1 , and mixtures thereof.3. The use according to claim 1 , wherein the peroxide compound is one or more of NaCO×1.5HO claim 1 , NaBO×4HO claim 1 , NaBO×HO claim 1 , and urea hydrogen peroxide.4. The use according to claim 1 , wherein the ionic liquid is at least one salt having a cation and an anion claim 1 , wherein the cation is selected from the group consisting of imidazolium claim 1 , pyrrolidinium claim 1 , ammonium claim 1 , choline claim 1 , pyridinium claim 1 , ...

METHOD FOR GENERATING OXYGEN FROM COMPOSITIONS COMPRISING IONIC LIQUIDS

The present invention is directed to a method for generating oxygen comprising providing at least one oxygen source, providing at least one ionic liquid, providing at least one metal oxide compound, wherein the oxygen source is a peroxide compound, the ionic liquid is in the liquid state at least in the temperature range from −10° C. to +50° C., and the metal oxide compound is an oxide of one single metal or of two or more different metals, said metal(s) being selected from the metals of groups 2 to 14 of the periodic table of the elements, and contacting the oxygen source, the ionic liquid, and the metal oxide compound. 1. A method for generating oxygen comprisingproviding at least one oxygen source,providing at least one ionic liquid, the oxygen source is a peroxide compound,', 'the ionic liquid is in the liquid state at least in the temperature range from −10° C. to +50° C., and', 'the metal oxide compound is an oxide of one single metal or of two or more different metals, said metal(s) being selected from the metals of groups 2 to 14 of the periodic table of the elements, and, 'providing at least one metal oxide compound, wherein'}contacting the oxygen source, the ionic liquid, and the metal oxide compound.2. The method according to claim 1 , wherein the oxygen source and the ionic liquid are provided as a first component claim 1 , the metal oxide compound is provided as a second component claim 1 , and the step of contacting comprises mixing the first and the second components.3. The method according to claim 1 , wherein the metal oxide compound and the ionic liquid are provided as a first component claim 1 , the oxygen source is provided as a second component claim 1 , and the step of contacting comprises mixing the first and the second component.4. The method according to claim 1 , wherein the oxygen source and the metal oxide compound are provided as a first component claim 1 , the ionic liquid is provided as a second component claim 1 , and the step of ...

MIXED CONDUCTOR, ELECTROCHEMICAL DEVICE INCLUDING THE SAME, AND METHOD OF PREPARING THE MIXED CONDUCTOR

A mixed conductor represented by Formula 1. A mixed conductor represented by Formula 1:{'br': None, 'sub': 1±x', '2±y', '4−δ, 'AMO\u2003\u2003Formula 1'} A is a monovalent cation,', 'M is at least one of a monovalent cation, a divalent cation, a trivalent cation, a tetravalent cation, a pentavalent cation, or a hexavalent cation,', '0≤x≤1, 0≤y≤2, and', '0≤δ≤1, with the proviso that when M includes vanadium, 0<δ≤1, and', 'wherein the mixed conductor has an inverse spinel crystal structure., 'wherein, in Formula 1,'}2. The mixed conductor of claim 1 , wherein A in Formula 1 is a monovalent alkali metal cation.3. The mixed conductor of claim 2 , wherein A is at least one of Li claim 2 , Na claim 2 , or K.4. The mixed conductor of claim 1 , wherein M is at least one of Co claim 1 , Ni claim 1 , Fe claim 1 , Mn claim 1 , V claim 1 , Ti claim 1 , Cr claim 1 , Cu claim 1 , Zn claim 1 , Mo claim 1 , Ru claim 1 , Nb claim 1 , Ta claim 1 , Pd claim 1 , Ag claim 1 , Mg claim 1 , Ca claim 1 , Sr claim 1 , Sc claim 1 , Y claim 1 , La claim 1 , Ce claim 1 , Pr claim 1 , Nd claim 1 , Sm claim 1 , Eu claim 1 , Gd claim 1 , Tb claim 1 , Dy claim 1 , Ho claim 1 , Er claim 1 , Tm claim 1 , Yb claim 1 , Lu claim 1 , Zr claim 1 , Hf claim 1 , Nb claim 1 , Ta claim 1 , W claim 1 , Tc claim 1 , Re claim 1 , Ru claim 1 , Os claim 1 , Rh claim 1 , Ir claim 1 , Pd claim 1 , Pt claim 1 , Au claim 1 , Cd claim 1 , Hg claim 1 , Al claim 1 , Ga claim 1 , In claim 1 , TI claim 1 , Ge claim 1 , Sn claim 1 , Pb claim 1 , Sb claim 1 , Bi claim 1 , Po claim 1 , As claim 1 , Se claim 1 , or Te.5. The mixed conductor of claim 1 , wherein in Formula 1A is Li, andM is at least one of Co, Ni, Fe, Mn, V, Ti, Cr, Cu, Zn, Mo, Ru, Nb, Ta, Pd, Ag, Mg, Ca, Sr, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Zr, Hf, Nb, Ta, W, Tc, Re, Ru, Os, Rh, Ir, Pd, Pt, Au, Cd, Hg, Al, Ga, In, TI, Ge, Sn, Pb, Sb, Bi, Po, As, Se, or Te.6. The mixed conductor of claim 1 , wherein M is located in both a ...

Method for manufacturing sputtering target, method for forming oxide film, and transistor

A method for manufacturing a sputtering target with which an oxide semiconductor film with a small amount of defects can be formed is provided. Alternatively, an oxide semiconductor film with a small amount of defects is formed. A method for manufacturing a sputtering target is provided, which includes the steps of: forming a polycrystalline In-M-Zn oxide (M represents a metal chosen among aluminum, titanium, gallium, yttrium, zirconium, lanthanum, cesium, neodymium, and hafnium) powder by mixing, sintering, and grinding indium oxide, an oxide of the metal, and zinc oxide; forming a mixture by mixing the polycrystalline In-M-Zn oxide powder and a zinc oxide powder; forming a compact by compacting the mixture; and sintering the compact.

MIXED CONDUCTOR, ELECTROCHEMICAL DEVICE INCLUDING THE SAME, AND METHOD OF PREPARING MIXED CONDUCTOR

A mixed conductor represented by Formula 1: 1. A mixed conductor represented by Formula 1:{'br': None, 'sub': 4+x', '5-y', 'y', '12-δ, 'AMM′O\u2003\u2003Formula 1'} A is a monovalent cation;', 'M is at least one of a divalent cation, a trivalent cation, or a tetravalent cation;', 'M′ is at least one of a monovalent cation, a divalent cation, a trivalent cation, a tetravalent cation, a pentavalent cation, or a hexavalent cation;, 'wherein, in Formula 1,'} '0.3≤x<3, 0.01 Подробнее

METHOD FOR MANUFACTURING SPUTTERING TARGET, METHOD FOR FORMING OXIDE FILM, AND TRANSISTOR

A method for manufacturing a sputtering target with which an oxide semiconductor film with a small amount of defects can be formed is provided. Alternatively, an oxide semiconductor film with a small amount of defects is formed. A method for manufacturing a sputtering target is provided, which includes the steps of: forming a polycrystalline In-M-Zn oxide (M represents a metal chosen among aluminum, titanium, gallium, yttrium, zirconium, lanthanum, cesium, neodymium, and hafnium) powder by mixing, sintering, and grinding indium oxide, an oxide of the metal, and zinc oxide; forming a mixture by mixing the polycrystalline In-M-Zn oxide powder and a zinc oxide powder; forming a compact by compacting the mixture; and sintering the compact. 1. (canceled)2. A method for manufacturing a sputtering target , comprising the steps of:forming a polycrystalline In-M-Zn oxide powder, M representing a metal selected from the group consisting of aluminum, titanium, yttrium, zirconium, lanthanum, cesium, neodymium, and hafnium, by mixing, sintering, and grinding indium oxide, an oxide of the metal, and zinc oxide;forming a mixture by mixing the polycrystalline In-M-Zn oxide powder and a zinc oxide powder;forming a compact by compacting the mixture; andsintering the compact,wherein an atomic ratio of zinc in the sputtering target is higher than an atomic ratio of M in the sputtering target.3. The method for manufacturing a sputtering target according to claim 2 ,wherein the polycrystalline In-M-Zn oxide powder is formed from a homologous compound of an In-M-Zn oxide.4. The method for manufacturing a sputtering target according to claim 2 ,wherein the atomic ratio of zinc in the sputtering target is higher than an atomic ratio of indium in the sputtering target.5. A method for manufacturing a sputtering target claim 2 , comprising the steps of:forming a polycrystalline In-M-Zn oxide powder from a homologous compound of an In-M-Zn oxide, M representing a metal selected from the group ...

Method for manufacturing sputtering target, method for forming oxide film, and transistor

A method for manufacturing a sputtering target with which an oxide semiconductor film with a small amount of defects can be formed is provided. Alternatively, an oxide semiconductor film with a small amount of defects is formed. A method for manufacturing a sputtering target is provided, which includes the steps of: forming a polycrystalline In-M-Zn oxide (M represents a metal chosen among aluminum, titanium, gallium, yttrium, zirconium, lanthanum, cesium, neodymium, and hafnium) powder by mixing, sintering, and grinding indium oxide, an oxide of the metal, and zinc oxide; forming a mixture by mixing the polycrystalline In-M-Zn oxide powder and a zinc oxide powder; forming a compact by compacting the mixture; and sintering the compact.

Lithium Battery Electrodes

Electrode materials for electrochemical cells and batteries and methods of producing such materials are disclosed herein. The electrode materials comprise an active lithium metal oxide material prepared by: (a) contacting the lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and (b) heating the so-contacted lithium metal oxide from step (a) to dryness at a temperature below 200° C. The metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and a main group metal ion.

Modified Black Spinel Pigments For Glass And Ceramic Enamel Applications

Modified copper chromite spinel pigments exhibit lower coefficients of thermal expansion than unmodified structures. Three methods exist to modify the pigments: (1) the incorporation of secondary modifiers into the pigment core composition, (2) control of the pigment firing profile, including both the temperature and the soak time, and (3) control of the pigment core composition. 1: A modified copper chromite black spinel pigment comprising a copper chromite based solid solution having a formula ACuMnCrO , wherein A is at least one metal selected from the group consisting of Al , Mg , Ti , Fe , Co , Ni , Zn , Zr , Nb , Y , W , Sb , and Ca , and wherein 2.6≤a+b+c+d≤3.2 , wherein none of a , b , and d is zero.2: The modified copper chromite black spinel pigment of wherein the modified cooper chromite black spinel pigment exhibits a reduced extrapolated CTE relative to a CuMnCrO4 where x+y+z=3.3: The modified copper chromite black spinel pigment of wherein a subscript “a” ranges from 0.01 to 0.60 and an extrapolated CTE is less than 94×10° C.4: The modified copper chromite black spinel pigment of wherein the subscript “a” ranges from 0.04 to 0.4.5: The modified copper chromite black spinel pigment of wherein the pigment has X-ray powder diffraction peaks wherein the (4 4 0) reflection has a full width at half maximum height of 2θ<0.30° after subtraction of the Cu Kα2 component.6: The modified copper chromite black spinel pigment of claim 1 , wherein a subscript “b”≤0.5.7: The modified copper chromite black spinel pigment of claim 1 , wherein 0.3≤b≤0.5.8: A glass or ceramic substrate bearing an enamel comprising the modified copper chromite black spinel pigment of .9: An enamel comprising the modified copper chromite black spinel pigment of .10: A method of producing a modified copper chromite black spinel pigment claim 1 , comprising:{'sub': a', 'b', 'c', 'd', '4, 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'providing precursor materials to form the formula ...

METHODS FOR MANUFACTURING SPINEL-TYPE TERNARY METAL OXIDES AS HOLE TRANSPORT MATERIALS

Methods for preparation of surfactant-free ultra-small spinel ternary metal oxide nanoparticles are provided. A method comprises dissolving first and second metal salts in deionized water in a specific mole ratio to form a solution comprising two different metal ions, applying a coprecipitation method and adding an alkaline solution to the solution to form a colloidal suspension, wherein a colloid of the colloidal suspension is a metal hydroxide, adjusting the amount and the addition rate of the alkaline solution to form a specific structure of metal hydroxide precipitate; washing and drying the metal hydroxide to form a structured metal hydroxide powder, and applying a calcination method to the structured metal hydroxide powder to form a surfactant-free spinel-type (ABO) ternary metal oxide, wherein A and B each respectively comprise a metal element. 1. A method of preparing a surfactant-free spinel-type (ABO) ternary metal oxide , the method comprising:dissolving first and second metal salts in deionized water in a specific molar ratio to form a solution comprising two different metal ions;applying a coprecipitation method and adding an alkaline solution to the solution comprising two different metal ions to form a colloidal suspension,wherein a colloid of the colloidal suspension is a metal hydroxide;adjusting the amount and the addition rate of the alkaline solution to form a specific structure of metal hydroxide precipitate;washing and drying the metal hydroxide precipitate to form a structured metal hydroxide powder; and{'sub': 2', '4, 'applying a calcination method to the structured metal hydroxide powder to form a surfactant-free spinel-type (ABO) ternary metal oxide,'}wherein A and B each respectively comprise a metal element.2. The method of claim 1 , wherein a particle of the metal hydroxide in the suspension has a diameter of less than lOnm.3. The method of claim 1 , wherein the surfactant-free spinel-type (ABO) ternary metal oxide has crystal structure ...

Storage battery

An object is to provide a storage battery using materials for an electrode active material without waste. Another object is to provide an electrode active material with an appropriate compounding ratio. A lithium-ion storage battery includes a positive electrode, a negative electrode, and an electrolytic solution therebetween. The positive electrode includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material. The charge capacity of the first positive electrode active material is higher than the discharge capacity thereof. The discharge capacity of the second positive electrode active material is higher than the charge capacity thereof. The first positive electrode active material may be a lithium-manganese composite oxide, and the second positive electrode active material may be a lithium-manganese oxide with a spinel crystal structure.

METHOD OF MANUFACTURING POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY

A positive active material for a rechargeable lithium battery includes a first oxide particle having a layered structure and a second oxide layer located in a surface of the first oxide particle and including a second oxide represented by the following Chemical Formula 1: MLO, wherein in Chemical Formula 1, 0 Подробнее

METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND SECONDARY BATTERY

A positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charging and discharging as compared with those of a known positive electrode active material. In order to form the positive electrode active material having the pseudo-spinel crystal structure in the charged state, it is preferable that a halogen source such as a fluorine and a magnesium source be mixed with particles of a composite oxide containing lithium, a transition metal, and oxygen, which is synthesized in advance, and then the mixture be heated at an appropriate temperature for an appropriate time. 110-. (canceled)11. A method for forming a positive electrode active material , comprising the steps of:mixing a lithium source, a fluorine source, and a magnesium source to form a first mixture;mixing a composite oxide containing lithium, a transition metal, and oxygen with the first mixture to form a second mixture; andheating the second mixture.12. The method for forming a positive electrode active material according to claim 11 ,wherein the positive electrode active material contains cobalt and nickel as the transition metal, andwherein a proportion of nickel atoms to a sum of cobalt atoms and nickel atoms is less than 0.1.13. The method for forming a positive electrode active material according to claim 11 , wherein the first mixture contains lithium fluoride as the lithium source and the fluorine source.14. The method for forming a positive electrode active material according to claim 13 ,wherein the first mixture contains magnesium fluoride as the fluorine source and the magnesium source,wherein a molar ratio of the lithium fluoride ...

Process for Producing Magnesium Oxide

Process for producing nanomaterials such as graphenes, graphene composites, magnesium oxide, magnesium hydroxides and other nanomaterials by high heat vaporization and rapid cooling. In some of the preferred embodiments, the high heat is produced by an oxidation-reduction reaction of carbon dioxide and magnesium as the primary reactants, although additional materials as reaction catalysts, control agents, or composite materials can be included in the reaction, if desired. The carbon dioxide and magnesium are combusted together in a reactor to produce nano-magnesium oxide, graphenes, graphene composites, and possibly other products which are then separated or excluded by suitable processes or reactions to provide the individual reaction products. The reaction is highly energetic, producing very high temperatures on the order of 5610° F. (3098° C.), or higher, and also produces large amounts of useful energy in the form of heat and light, including infrared and ultraviolet radiation, all of which can be captured and reused in the invention or utilized in other applications. The products of combustion, particularly the magnesium oxide, can be recycled to provide additional oxidizing agents for combustion with the carbon dioxide. By varying the process parameters, such as reaction temperature and pressure, the type and morphology of the carbon nanoproducts and other nanoproducts can be controlled. The reaction also produces nanomaterials from a variety of input materials. The reaction products include novel nanocrystals of MgO (percilase) and MgAlO(spinels) as well as composites of these nanocrystals with multiple layers of graphene deposited on or intercalated with them. 1. A process for producing magnesium oxide (MgO) nanoparticles , comprising the steps of combusting magnesium and carbon dioxide (CO) together at a temperature of about 2000° F.-5610° F. to produce MgO and carbon nanoparticles , separating the MgO nanoparticles from the carbon nanoparticles and any ...

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, BATTERY, BATTERY PACK, ELECTRONIC DEVICE, ELECTRIC VEHICLE, POWER STORAGE DEVICE, AND POWER SYSTEM

A positive electrode active material includes powder of composite particles including a lithium transition metal composite oxide having a lamellar rock-salt structure and a spinel phase. The spinel phase includes an oxide including lithium and at least a first element X1 selected from the group consisting of magnesium, aluminum, titanium, manganese, yttrium, zirconium, molybdenum, and tungsten, and the lithium transition metal composite oxide includes nickel or cobalt and the first element X1. 1. A positive electrode active material , comprising:powder of composite particles including a lithium transition metal composite oxide having a lamellar rock-salt structure and a spinel phase,wherein the spinel phase includes an oxide including lithium and at least a first element X1 selected from the group consisting of magnesium, aluminum, titanium, manganese, yttrium, zirconium, molybdenum, and tungsten, andwherein the lithium transition metal composite oxide includes nickel or cobalt and the first element X1.2. The positive electrode active material according to claim 1 , wherein a concentration of the first element X1 is higher on surfaces of the composite particles than inside of the composite particles.3. The positive electrode active material according to claim 1 , wherein the spinel phase is eccentrically populated to be more abundant on the surfaces of the composite particles.4. The positive electrode active material according to claim 1 , wherein the composite particles further include a compound including a second element X2 selected from the group consisting of sulfur claim 1 , phosphorous claim 1 , and fluorine.5. The positive electrode active material according to claim 4 , wherein the compound including the second element X2 is eccentrically populated to be more abundant on either or both of the surfaces and a crystal grain boundary of the composite particles.6. The positive electrode active material according to claim 1 , wherein a content amount of the ...

PARTICLES FOR MONOLITHIC REFRACTORY

Particles for a monolithic refractory are made of a spinet porous sintered body which is represented by a chemical formula of MgAlO, wherein pores having a pore size of 0.01 μm or more and less than 0.8 μm occupy 10 vol % or more and 50 vol % or less with respect to a total volume of pores having a pore size of 10 μm or less in the particles, and the particles for a monolithic refractory have grain size distribution in which particles having a particle size of less than 45 μm occupy 60 vol % or less, particles having a particle size of 45 μm or more and less than 100 μm occupy 20 vol % or more and 60 vol % or less, and particles having a particle size of 100 μm or more and 1000 μm or less occupy 10 vol % or more and 50 vol % or less. 1wherein pores having a pore size of 0.01 μm or more and less than 0.8 μm occupy 10 vol % or more and 50 vol % or less with respect to a total volume of pores having a pore size of 10 μm or less in the particles for a monolithic refractory, andthe particles for a monolithic refractory have grain size distribution in which particles having a particle size of less than 45 μm occupy 60 vol % or less, particles having a particle size of 45 μn or more and less than 100 μm occupy 20 vol % or more and 60 vol % or less, and particles having a particle size of 100 μm or more and 1000 μm or less occupy 10 vol % or more and 50 vol % or less.. Particles for a monolithic refractory made of a spinel porous sintered body which is represented by a chemical formula of MgA1O, Field of the InventionThe present invention relates to particles for a monolithic refractory which are made of a spinel porous sintered body.Description of the Related ArtAs a powder material that is a raw material for a monolithic refractory, various kinds of ceramic materials are often used, and in particular, in the light of heat resistance and corrosion resistance, alumina-spinel ceramics can be exemplified as a favorable form.For example, JP 2002-187782 A discloses an alumina- ...

Process for producing composite material of metal oxide with conductive carbon

Provided is a method whereby metal oxide nanoparticles having evenness of size are efficiently and highly dispersedly adhered to conductive carbon powder. This method comprises: a preparation step in which a reaction solution containing water, a compound with a transition metal selected from the group consisting of Mn, Fe, Co, and Ni, and conductive carbon powder and having a pH in the range of 9 to 11 is introduced into a rotatable reactor; a supporting step in which the reactor is rotated to apply shear stress and centrifugal force to the reaction solution, thereby yielding a core of a hydroxide of the transition metal and dispersing the thus-yielded core of a hydroxide of the transition metal and the conductive carbon powder and simultaneously supporting the hydroxide of the transition metal by the conductive carbon powder; and a heat treatment step in which the conductive carbon powder loaded with the hydroxide of the transition metal is heated to thereby convert the hydroxide supported by the conductive carbon powder into an oxide nanoparticle.

Sintered Body Containing Lithium Titanate and Lithium Lanthanum Titanate, Method for Producing Same, and Lithium Battery

Provided is a sintered body which is a composite of an electrode active material and an oxide-based solid electrolyte. The sintered body used is characterized by containing lithium titanate having the spinel crystal structure and/or lithium titanate having the ramsdellite crystal structure, and lithium lanthanum titanate having the perovskite crystal structure. The sintered body can be obtained by, for example, a sintered body production method including a step for obtaining a molded body by molding a mixture of a precursor for lithium titanate and a precursor for lithium lanthanum titanate, or a mixture of lithium titanate and lithium lanthanum titanate, and a sintering step for sintering the molded body, or the like. 1. A sintered body comprising a lithium titanate having a spinel-type crystal structure and/or a lithium titanate having a ramsdellite-type crystal structure , anda lithium lanthanum titanate having a perovskite-type crystal structure.2. The sintered body according to wherein a mol ratio of titanium and lanthanum included in the sintered body is La/Ti=0.0001 to 0.66.3. The sintered body according to claim 1 , wherein a mol ratio of titanium and lanthanum included in the sintered body is La/Ti=0.05 to 0.2.4. The sintered body according to claim 1 , wherein an actual density of the sintered body is no less than 2.5 g/cm.5. The sintered body according to claim 1 , wherein a lithium ion conductivity of the sintered body at 25° C. is no less than 1×10S/cm.6. The sintered body according to claim 1 , wherein the sintered body has a plate form or sheet form claim 1 , with a thickness of no less than 3 μm.7. The sintered body according to claim 6 , wherein a diameter of a crystal grain of the lithium titanate constituting the sintered body claim 6 , and a diameter of a crystal grain of the lithium lanthanum titanate constituting the sintered body are each no greater than ⅓ of the thickness of the sintered body.8. The sintered body according to claim 1 , ...

SPINEL SLURRY AND CASTING PROCESS

A magnesium aluminate spinel nanopowder including: 1. A magnesium aluminate spinel nanopowder comprising:a particle size of from 200 to 800 nm;a median particle size of from 200 to 400 nm; and{'sup': '2', 'a surface area by BET is from 2 to 10 m/g.'}2. The nanopowder of wherein:the particle size is from 200 to 600 nm; and{'sup': '2', 'the particle surface area is from 4 to 10 m/g.'}3. The nanopowder of wherein:the particle size is from 200 to 400 nm;the median particle size is from 250 to 350 nm; and{'sup': '2', 'the particle surface area is from 6 to 8 m/g.'}4. The nanopowder of wherein the median particle size is 300 nm.5. A method of making the magnesium aluminate spinel nanopowder of claim 1 , comprising:{'sub': 4', '2', '3', '4', '4', '2', '3', '2, 'contacting an aqueous solution of (NH)COand an aqueous solution of a mixture of (NH)Al(SO)and Mg(NO)at about 45 to 55° C.;'}aging the reaction mixture at about 45 to 55° C. for 5 to 15 hrs while mixing to produce a solid;separating, washing, and drying, the resulting solid; andsintering the resulting solid at from 1300 to 1500° C. to form a spinel product.6. The method of wherein the contacting comprising controlled addition the aqueous solution of a mixture of 0.5 mol % (NH)Al(SO)and 0.25 mol % Mg(NO)to the aqueous solution of 1.5 mol % (NH)COusing a syringe pump. This application claims the benefit of priority under 35 U.S.C. §119 of U.S. Provisional Application Ser. No. 62/113,830 filed on Feb. 9, 2015, the content of which is relied upon and incorporated herein by reference in its entirety.The present application is related commonly owned and assigned U.S. Provisional Application Ser. No. 62/019,649, filed Jul. 1, 2014, entitled “TRANSPARENT SPINEL ARTICLE AND TAPE CAST METHODS FOR MAKING,” but does not claim priority thereto. The content of this document and the entire disclosure of any publication or patent document mentioned herein is incorporated by reference.The present disclosure generally relates to a ...

LIQUID-CRYSTAL-DISPLAY PROTECTION PLATE AND METHOD FOR PRODUCING LIQUID-CRYSTAL-DISPLAY PROTECTION PLATE

Provided are a liquid-crystal-display protection plate that has a high strength, is produced at a reduced cost, and has a shape including a curved surface; and a method for producing the liquid-crystal-display protection plate. The liquid-crystal-display protection plate is formed of a spinel sintered body. The spinel sintered body has an average grain size of 10 μm or more and 100 μm or less. The liquid-crystal-display protection plate has a shape including a curved surface. 1: A liquid-crystal-display protection plate formed of a spinel sintered body ,the spinel sintered body having an average grain size of 10 μm or more and 100 μm or less,the liquid-crystal-display protection plate having a shape including a curved surface.2: The liquid-crystal-display protection plate according to claim 1 , wherein the liquid-crystal-display protection plate has a surface roughness Ra of 20 nm or less.3: The liquid-crystal-display protection plate according to claim 1 , wherein the liquid-crystal-display protection plate has a Si element content of 20 ppm or less.4: The liquid-crystal-display protection plate according to claim 1 , wherein the liquid-crystal-display protection plate has claim 1 , with a thickness of 1 mm claim 1 , an average optical transmittance of 85% or more for light of wavelengths of 400 nm to 800 nm.5: A method for producing the liquid-crystal-display protection plate according to claim 1 , the method comprising:a step of preparing an inner mold having an outer peripheral surface including a curved surface, and an outer mold that is elastic and covers the outer peripheral surface of the inner mold with a gap width therebetween;a step of filling a gap formed between the inner mold and the outer mold, with a raw material mixture containing spinel particles;a step of applying pressure to the outer mold to obtain a spinel molded body containing the raw material mixture; anda step of sintering the spinel molded body to obtain a spinel sintered body.6: A method ...

METHOD FOR OBTAINING CALCIUM ALUMINATES FROM NON-SALINE ALUMINUM SLAGS

The present invention relates to a method for obtaining calcium aluminates for metallurgical use from non-saline aluminum slags by means of reactive grinding and thermal treatment. 1. A method for obtaining calcium aluminates CaAlO(CA) , CaAlO(CA) , CaAlO(CA) , CaAlO(CA) and CaAlO(CA) , where C=CaO and A=AlO , comprising the following steps:{'sub': '3', 'a) carry out a reactive grinding of the non-saline aluminum slag from recovery by means of melting aluminum scrap metal or products of secondary smelting of this metal in the presence of calcium carbonate CaCO;'}b) thermally treating the product obtained in step a) at a temperature between 700° C. and 750° C.;c) thermally treating the product obtained in step b) at a temperature between 1300° C. and 1400° C.2. The method for obtaining according to the previous claim , wherein the non-saline aluminum slag of step a) has a percentage of hydrated aluminum oxides between 5% and 65%.3. The method according to any of or , wherein the AlO:CaO molar ratio of the non-saline aluminum slag of step a) is 1:3.4. The method according to any of to , wherein the grinding of step a) is carried out by means of a ball mill.5. The method according to any of to , where the product obtained in step a) has an average particle size of less than 40 μm.6. The method according to any of claim 3 , wherein the calcium aluminate content CaAlO(CA) claim 3 , CaAlO(CA) claim 3 , CaAlO(CA) claim 3 , CaAlO(CA) and CaAlO(CA) claim 3 , where C═CaO and A═AlO claim 3 , of step c) is comprised between 70% and 92%.7. The method according to any of or claim 3 , wherein the tricalcium aluminate content CaAlO(CA) is comprised between 71% and 85%. The present invention relates to a method for obtaining calcium aluminates for metallurgical use from non-saline aluminum slags by means of reactive grinding and thermal treatment.Calcium aluminates are described in the binary phase diagram CaO-AlO[R. W. Nurse, J. H. Welch and A. J. Majumdar, The CaO-AlSystem in a ...

Layered and spinel lithium titanates and processes for preparing the same

A process for producing lithium titanate which includes the steps of synthesizing a lithium titanate hydrate intermediate via aqueous chemical processing, and thermally treating the lithium titanate hydrate intermediate to produce the lithium titanate. The lithium titanate hydrate is preferably (Li 1.81 H 0.19 )Ti 2 O<<2H 2 O. The lithium titanate is preferably Li 4 Ti 5 O 12 (LTO). Synthesizing the lithium titanate hydrate intermediate may include mixing a titanium-containing compound with a lithium-containing compound in a solvent to produce a lithium-titanium precursor mixture. Preferably the titanium-containing compound includes titanium tetrachloride TiCl 4 . Also, a lithium titanate obtained according to the process and a lithium battery including the lithium titanate.

Positive electrode and secondary battery using same

The present invention relates to a positive electrode comprising a Mn composite oxide having a tetragonal structure represented by formula (1): Li a (M x Mn 2-x-y Y y )(O 4-w Z w )(wherein 1<a≦2.6, 0≦x≦1.2, 0≦y, x+y<2, 0≦w≦1; M is at least one selected from the group consisting of Co, Ni, Fe, Cr and Cu; Y is at least one selected from the group consisting of Li, B, Na, Mg, Al, Ti, Si, K and Ca; Z is at least one of F or Cl; and a composite oxide having a layered structure represented by formula (2): Li(Li x M 1-x-y Y y )O 2 (wherein 0≦x<0.3, 0≦y<0.3; M is at least one selected from the group consisting of Co, Fe, Ni and Mn; Y is at least one selected from the group consisting of Mg, Al, Zr, Ti and Zn. According to the present invention, a lithium secondary battery having a high capacity and being excellent in cycle life can be provided.

Method for Producing Magnesium Aluminate Spinels

A process for producing a magnesium aluminate spinel comprising the steps of: i) preparing a magnesium suspension containing a magnesium compound; ii) preparing an aluminum suspension containing an aluminum compound; iii) feeding the magnesium suspension and aluminum suspension independently into a spray dryer nozzle to form a mixed magnesium, aluminum suspension; iv) feeding the mixed magnesium, aluminium suspension from the spray dryer nozzle into a spray dryer to form a mixed magnesium and aluminum compound; and v) calcining the mixed magnesium and aluminum compound to generate a magnesium aluminate spinel. 1. A process for producing a magnesium aluminate spinel comprising the following steps:i) preparing a magnesium suspension containing a magnesium compound;ii) preparing an aluminum suspension containing an aluminum compound;iii) feeding the magnesium suspension and aluminum suspension independently into a spray dryer nozzle to form a mixed magnesium, aluminum suspension;iv) feeding the mixed magnesium, aluminium suspension from the spray dryer nozzle into a spray dryer to form a mixed magnesium and aluminum compound; andv) calcining the mixed magnesium and aluminum compound to generate a magnesium aluminate spinel.2. The process according to claim 1 , wherein the magnesium suspension and the aluminum suspension are fed into the spray dryer by a spray dryer nozzle comprising at least two inlets that allows the magnesium suspension and the aluminum suspension to be fed independently into the spray dryer nozzle where they are combined and fed out into the spray dryer as a mixed magnesium aluminum suspension.3. The process according to wherein a pump system is used to feed the magnesium and aluminum suspensions independently into the spray dryer nozzle.4. The process according to claim 1 , wherein the aluminum compound comprises aluminum oxyhydroxide claim 1 , aluminum oxide claim 1 , aluminum hydroxide claim 1 , or mixtures thereof.5. The process according to ...

NEGATIVE ELECTRODE ACTIVE MATERIAL, ELECTRICAL STORAGE DEVICE, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL

A negative-electrode active material disclosed herein contains a lithium titanate having a spinel structure, and satisfies the relationship B×P<50, where B is a specific surface (unit: m/g) of the lithium titanate as measured by a BET technique; and P is obtained by immersing 1 g of the lithium titanate in 50 cmof redistilled water and determining a pH of the redistilled water after 30 minutes of agitation. 1. A negative-electrode active material comprising a lithium titanate having a spinel structure , whereinthe relationship B×P<18.5 is satisfied,{'sup': 2', '3, 'where B is a specific surface (unit: m/g) of the lithium titanate as measured by a BET technique; and P is obtained by immersing 1 g of the lithium titanate in 50 cmof redistilled water and determining a pH of the redistilled water after 30 minutes of agitation.'}2. The negative-electrode active material of claim 1 , wherein B is not less than 0.7 m/g and not more than 1.8 m/g claim 1 , and P is not less than 9.7 and not more than 10.3.3. The negative-electrode active material of claim 1 , wherein the lithium titanate has a composition expressed as LiTiO.4. (canceled)5. The negative-electrode active material of claim 1 , wherein the lithium titanate has been washed with water.6. The negative-electrode active material of claim 1 , wherein the lithium titanate has been washed with hot water.7. An electricity storage device comprising a negative electrode containing the negative-electrode active material of .8. A method of producing the negative-electrode active material of claim 1 , comprising:a step of, after synthesizing the lithium titanate, washing the lithium titanate with a liquid.9. The method of producing the negative-electrode active material of claim 8 , wherein a main component of the liquid is water claim 8 , and the water has a temperature of not less than 40° C. and not more than 80° C.10. A method of producing a negative-electrode active material of claim 1 , comprising a step of baking ...

METHOD OF MAKING CHROMIUM-SUBSTITUTED SPINEL FERRITE NANOPARTICLES FOR MICROBE TREATMENT

Methods of forming spinel ferrite nanoparticles containing a chromium-substituted copper ferrite as well as properties (e.g. particle size, crystallite size, pore size, surface area) of these spinel ferrite nanoparticles are described. Methods of preventing or reducing microbe growth on a surface by applying these spinel ferrite nanoparticles onto the surface in the form of a suspension or an antimicrobial product are also described. 1: A method of making spinel ferrite nanoparticles , the method comprising:mixing a copper(II) salt, a chromium(III) salt, an iron(III) salt, an inorganic base, and water to form a mixture;heating the mixture to form a precipitate; anddrying the precipitate thereby producing the spinel ferrite nanoparticles, {'br': None, 'sub': x', '2-x', '4, 'CuCrFeO\u2003\u2003(I)'}, 'wherein the spinel ferrite nanoparticles comprise a chromium-substituted copper ferrite of formula (I)'}wherein X is greater than 0 and smaller than 2.2: The method of claim 1 , wherein the inorganic base is sodium hydroxide.3: The method of claim 1 , wherein the mixture has a pH in a range of 10-12.4: The method of claim 1 , wherein the mixture is heated at a first temperature of 40-100° C. for 0.1-3 hours claim 1 , and subsequently at a second temperature of 110-180° C. for 1-6 hours.5: The method of claim 1 , wherein the precipitate is dried at a temperature of 40-100° C. for 1-24 hours.6: The method of claim 1 , wherein the copper(II) salt is copper(II) nitrate.7: The method of claim 1 , wherein the chromium(III) salt is chromium(III) chloride.8: The method of claim 1 , wherein the iron(III) salt is iron(III) nitrate.9: The method of claim 1 , wherein the chromium-substituted copper ferrite of formula (I) is at least one selected from the group consisting of CuCrFeO claim 1 , CuCrFeO claim 1 , CuCrFeO claim 1 , CuCrFeO claim 1 , and CuCrFeO.10: The method of claim 1 , wherein the spinel ferrite nanoparticles have an average particle size in a range of 20-90 nm.11: ...

LOW-COST PROCESS OF MANUFACTURING TRANSPARENT SPINEL

The invention provides ballistic-resistant transparent objects of complex shapes consisting of magnesium aluminate spinel. The invention also provides a cost-effective industrial process for making the objects, including slip casting and sintering. 1. A high-yield and low-cost process of manufacturing a transparent object essentially consisting of magnesium aluminate spinel without metal dopants , comprisingi) preparing an aqueous slurry comprising at least 55 wt % pure spinel powder, water, a dispersant, a pH-adjusting agent, and an organic agent to maintain low viscosity, said slurry lacking metal dopants;ii) milling the slurry of step i) in a ball mill for at least 24 hours, whereby obtaining a suspension of fine spinel particles in aqueous solution, wherein said organic agent enables to maintain low viscosity during said milling and over prolonged periods, and wherein the suspension contains at least 65 wt % non-aqueous components;iii) providing a mold without employing gypsum, having essentially the desired shape of said object, wherein the inner surface of the mold in contact with the slurry is a nano-pore filter essentially impermeable to the particles of said spinel powder, the mold being hermetically sealed except for an inlet of said mold and for the pores of said filter;iv) pouring said suspension of fine spinel particles of step ii) into said mold of step iii) through said inlet;v) connecting said inlet with pressure source and adjusting the pressure in said mold to up to 4 MPa, the pressure pushing the aqueous solution through said filter out of the mold;vi) keeping said pressure on until at least about 75% of the originally present liquid leaves the mold, whereby obtaining a green body;vii) extracting the green body from the mold and drying it in a humidity-controlled environment;viii) heating the body at between 680 and 720° C. until the organic materials are removed;ix) sintering at about 1600° C. for between 1.5 and 2.5 hours;x) subjecting the body ...

Method of Manufacturing Superparamagnetic Nanocomposite and Superparamagnetic Nanocomposite Manufactured Using the Same

The present invention relates to a method of manufacturing a superparamagnetic nanocomposite and a superparamagnetic nanocomposite manufactured using the same, and more particularly to a method of manufacturing a superparamagnetic nanocomposite suitable for use in magnetic separation for the detection of a target biomaterial and a superparamagnetic nanocomposite manufactured using the same. The method of manufacturing the superparamagnetic nanocomposite according to the present invention has a higher yield and a high rate without complicated processing than a conventional method of manufacturing a magnetic nanoparticle for magnetic separation and is capable of mass production of the superparamagnetic nanocomposite having excellent properties with uniform size and particle size distribution, high aqueous solution dispersibility and high magnetization and being capable of maintaining superparamagnetism.

Surface Treatment For Lithium Battery Electrode Materials

Electrode materials for electrochemical cells and batteries and methods of producing such materials are disclosed herein. A method of preparing an active lithium metal oxide material suitable for use in an electrode for a lithium electrochemical cell comprises the steps of: (a) contacting the lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and (b) heating the so-contacted lithium metal oxide from step (a) to dryness at a temperature below 200° C. The metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and a main group metal ion.

ACTIVE MATERIAL, ACTIVE MATERIAL PRODUCTION METHOD, NONAQUEOUS ELECTROLYTE BATTERY, AND BATTERY PACK

According to one embodiment, an active material includes a lithium-titanium composite oxide. The lithium-titanium composite oxide includes a lithium compound including at least one of lithium carbonate and lithium hydroxide. A lithium amount of the lithium compound is within a range of 0.017 to 0.073 mass %. 115.-. (canceled)16. An active material production method comprising:synthesizing a lithium-titanium composite oxide by calcining a material containing a lithium salt and titanium oxide andwashing the lithium-titanium composite oxide with water containing carbon dioxide.17. The active material production method according to claim 16 ,wherein the lithium-titanium composite oxide subjected to the washing is subjected to a heat treatment.18. The active material production method according to claim 17 ,wherein a temperature of the heat treatment is within a range of 250° C. to 900° C.19. The active material production method according to claim 16 ,wherein a temperature of the calcination is within a range of 680° C. to 1000° C.20. The active material production method according to claim 16 ,wherein a temperature of the calcination is within a range of 900° C. to 1300° C.21. The active material production method according to claim 16 ,wherein the lithium-titanium composite oxide before the washing comprises lithium carbonate, and a mole number of the carbon dioxide relative to a mole number of the lithium carbonate is 1 or more.22. The active material production method according to claim 16 ,wherein a temperature of an atmosphere under which the washing is performed is within a range of −40° C. to 50° C.23. The active material production method according to claim 16 ,wherein the lithium-titanium composite oxide comprises at least one lithium compound selected from the group consisting of lithium carbonate and lithium hydroxide, and a lithium amount of the lithium compound is within a range of 0.017 to 0.073 mass %.24. The active material production method according ...

Open vessels and their use

Vessels selected from crucibles, pans, open cups and saggars essentially comprising of two components, from which (A) one component being a ceramic matrix composite, and (B) the second component being from metal or alloy, and wherein component (A) is the inner one.

Methods and catalysts for green biodiesel production from unrefined low grade feedstock

This invention provides a catalyst comprising a new form of ZnFe 2 O 4 spinel nanoparticles, and a method for preparing same. The catalyst is useful for catalyzing the esterification of fatty acids or transesterification of triglycerides, wherein the reaction rate and conversion can be enhanced by free fatty acids.

Method of Manufacturing Superparamagnetic Nanocomposite and Superparamagnetic Nanocomposite Manufactured Using the Same

The present invention relates to a method of manufacturing a superparamagnetic nanocomposite and a superparamagnetic nanocomposite manufactured using the same, and more particularly to a method of manufacturing a superparamagnetic nanocomposite suitable for use in magnetic separation for the detection of a target biomaterial and a superparamagnetic nanocomposite manufactured using the same. The method of manufacturing the superparamagnetic nanocomposite according to the present invention has a higher yield and a high rate without complicated processing than a conventional method of manufacturing a magnetic nanoparticle for magnetic separation and is capable of mass production of the superparamagnetic nanocomposite having excellent properties with uniform size and particle size distribution, high aqueous solution dispersibility and high magnetization and being capable of maintaining superparamagnetism. 116-. (canceled)17: A superparamagnetic nanocomposite comprising a magnetic nanocrystal which is FeOhaving a diameter of from more than 0 to 10 nm , wherein a surface of the magnetic nanocrystal is stabilized by carboxylate (COO) group , wherein the superparamagnetic nanocomposite has a plurality of magnetic nanocrystals clustered therein , has a nanoclustered shape having a diameter of 200 nm to 450 nm and has hydrophilicity so as to be dispersed in an aqueous solution. The present invention relates to a method of manufacturing a superparamagnetic nanocomposite and a superparamagnetic nanocomposite manufactured using the same, and more particularly to a method of manufacturing a superparamagnetic nanocomposite suitable for use in the detection of a target biomaterial and a superparamagnetic nanocomposite manufactured using the same.The development of methods of detecting and quantifying a biomolecule such as a target biomarker at high sensitivity is regarded as very important in the fields of medical and life sciences, such as in the diagnosis of diseases and the ...

Production of a Spinel Material

A process for producing a lithium-manganese-oxide spinel material includes producing a raw lithium-manganese-oxide (‘LMO’) material by means of combustion synthesis; optionally, subjecting the raw LMO material to microwave treatment, to obtain a treated material; annealing the raw LMO material or the treated material, to obtain an annealed material; and optionally, subjecting the annealed material to microwave treatment. At least one of the microwave treatments must take place. 2. The process according to claim 1 , wherein the combustion synthesis by means of which the raw LMO material is produced is solution combustion synthesis (‘SCS’) comprising subjecting or exposing a homogeneous solution of reactants to an initial high temperature to initiate an exothermic reaction of the reactants throughout the solution claim 1 , with the raw LMO material being in powdered or granular form.3. The process according to claim 2 , wherein the reactants comprise a lithium compound selected from lithium nitrate claim 2 , acetate claim 2 , sulphate and/or carbonate claim 2 , and a manganese compound selected from manganese nitrate claim 2 , acetate claim 2 , sulphate and/or carbonate.4. The process according to claim 3 , wherein water is used as the solvent so that the solution is an aqueous solution.5. The process according to claim 4 , wherein the homogeneous solution includes a combustion aid or fuel for the reaction.6. The process according to claim 5 , which includes dissolving the lithium compound claim 5 , the manganese compound and the fuel in water claim 5 , with the initial high or elevated temperature to which the solution is subjected or exposed being at least 500° C.7. The process according to claim 6 , which includes continuing to subject the solution and the raw LMO material or product claim 6 , as it forms claim 6 , to the high temperature of at least 500° C. while the exothermic or self-sustaining reaction takes place.8. The process according to claim 2 , wherein ...

METAL OXIDE CATALYST, METHOD OF PREPARING THE CATALYST, AND METHOD OF ALCOHOL USING THE SAME

A metal oxide catalyst involved in a hydrogenation reaction in which a ketone is converted into an alcohol, a method of preparing the metal oxide catalyst, and a method of preparing an alcohol using the same are provided. The metal oxide catalyst has a spinel structure represented by the following Formula 1: 1. A metal oxide catalyst involved in a hydrogenation reaction in which a ketone is converted into an alcohol , wherein the metal oxide catalyst has a spinel structure represented by the following Formula 1:{'br': None, 'sub': 2', '4, 'XAlO, \u2003\u2003'}wherein X represents nickel or copper.2. The metal oxide catalyst of claim 1 , wherein a content of the nickel in the metal oxide catalyst is in a range of 20 to 65% by weight.3. The metal oxide catalyst of claim 1 , wherein a content of the copper in the metal oxide catalyst is in a range of 20 to 65% by weight.4. The metal oxide catalyst of claim 1 , wherein the metal oxide catalyst has an average particle size of 100 to 1 claim 1 ,000 nm.5. A method of preparing a metal oxide catalyst claim 1 , comprising:(a) dissolving a nickel or copper precursor and an aluminum precursor in a polar solvent to prepare a precursor solution;(b) pyrolyzing the precursor solution while spraying the precursor solution into a reactor using a carrier gas so as to form a catalyst powder; and(c) transferring the catalyst powder to a storage tank, followed by calcining the catalyst powder in the storage tank to increase a surface area of the catalyst powder.6. The method of claim 5 , wherein the polar solvent in step (a) is distilled water.7. The method of claim 5 , wherein the pyrolysis in step (b) is carried out at a temperature of 600 to 850° C.8. The method of claim 5 , wherein the calcination in step (c) is carried out at a temperature of 350 to 450° C.9. A method of preparing an alcohol claim 5 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'allowing hydrogen to react with a ketone in the presence of ...

POLYCRYSTALLINE METAL OXIDES WITH ENRICHED GRAIN BOUNDARIES

Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles. 1. An electrochemical cell comprising a cathode , and anode and an electrolyte , the cathode comprising electrochemically active polycrystalline secondary particle comprising:{'sub': 1+x', '2+y, 'claim-text': −0.1≤x≤0.3,', '−0.3≤y≤0.3, and', 'wherein M comprises nickel at greater than or equal to 10 atomic percent; and, 'a plurality of crystallites, the plurality of crystallites comprising a first composition defined by LiMO, wherein'}{'sub': '2', 'a grain boundary between adjacent crystallites of said plurality of crystallites and comprising a second composition optionally having an α-NaFeO-type layered structure, a cubic structure, spinel structure, or a combination thereof, wherein a concentration of aluminum in the grain boundary is greater than a concentration of aluminum in the crystallites.'}2. The electrochemical cell of wherein the aluminum is substantially uniformly distributed through said grain boundary.3. The electrochemical cell of wherein the amount of aluminum averaged in the grain boundary is 0.01 at % to 10 at % relative to the total transition metal averaged in the first composition.4. The electrochemical cell of wherein the concentration of aluminum in the second composition is equal to or less than the concentration of Co in the second composition.51. The electrochemical cell of claim 1 , wherein the grain boundary comprises cobalt in an amount of about 2 at % to about 99 at % relative to total transition metal in the second composition claim 1 ...

5V-Class Spinel-Type Lithium-Manganese-Containing Composite Oxide

Provided is a new 5 V-class spinel-type lithium-manganese-containing composite oxide capable of achieving both the expansion of a high potential capacity region and the suppression of gas generation. Proposed is the spinel-type lithium-manganese-containing composite oxide comprising Li, Mn, O and two or more other elements, and having an operating potential of 4.5 V or more at a metal Li reference potential, wherein a peak is present in a range of 14.0 to 16.5° at 2θ, in an X-ray diffraction pattern measured by a powder X-ray diffractometer (XRD) using CuKα1 ray. 1. A spinel-type lithium-manganese-containing composite oxide , comprisingLi, Mn, O and two or more other elements,and having an operating potential of 4.5 V or more at a metal Li reference potential,wherein, in an X-ray diffraction pattern measured by a powder X-ray diffractometer (XRD) using CuKα1 ray,a peak is present in a range of 14.0 to 16.5° at 2θ.2. The spinel-type lithium-manganese-containing composite oxide according to claim 1 , wherein{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'at least one element from the “two or more other elements” according to is selected from the group consisting of Ni, Co and Fe, and'}another element is selected from the group consisting of Mg, Ti, Al, Ba, Cr, W, Mo, Y, Zr and Nb.3. The spinel-type lithium-manganese-containing composite oxide according to claim 1 , wherein{'sub': a', '2-a-b-c', 'b', 'c', '4-δ, 'the spinel-type lithium-manganese-containing composite oxide is represented by formula (1): Li[LiMnM1M2]O (wherein M1 represents one or two or more elements selected from the group consisting of Ni, Co and Fe, M2 represents one or two or more elements selected from the group consisting of Mg, Ti, Al, Ba, Cr, W, Mo, Y, Zr and Nb, a is 0.00 to 0.20, b is 0.20 to 1.20, and c is 0.001 to 0.400).'}4. The spinel-type lithium-manganese-containing composite oxide according to claim 1 , wherein{'sub': a', '2-a-b-c', 'b', 'c', '4-δ, 'the spinel-type lithium-manganese- ...

5V-Class Spinel-Type Lithium-Manganese-Containing Composite Oxide

Provided is a new 5 V class spinel-type lithium manganese-containing composite oxide which enables the expansion of a high potential capacity region and the suppression of gas generation. The 5 V class spinel-type lithium manganese-containing composite oxide has an operating potential of 4.5 V or more at a metal Li reference potential, and contains Li, Mn, O and two or more other elements. The spinel-type lithium manganese-containing composite oxide is characterized in that, in an electronic diffraction image from a transmission electron microscope (TEM), a diffraction spot observed in the Fd-3m structure as well as a diffraction spot not observed in the Fd-3m structure are confirmed. 1. A spinel-type lithium manganese-containing composite oxide , comprisingLi, Mn, O and two or more other elements,and having an operating potential of 4.5 V or more at a metal Li reference potential, wherein, in an electronic diffraction image from a transmission electron microscope (TEM), a diffraction spot which is observed in Fd-3m structure as well as a diffraction spot which is not observed in the Fd-3m structure are confirmed.2. The spinel-type lithium manganese-containing composite oxide according to claim 1 , wherein claim 1 ,in an electronic diffraction image from a transmission electron microscope (TEM),the diffraction spot which is not observed in the Fd-3m structure has an intensity equal to or lower than that of the diffraction spot which is observed in the Fd-3m structure.3. The spinel-type lithium manganese-containing composite oxide according to claim 1 , wherein claim 1 ,in an electronic diffraction image from a transmission electron microscope (TEM),{'sub': '3', 'the diffraction spot which is not observed in the Fd-3m structure is a diffraction spot which is observed in P432 structure.'}4. A spinel-type lithium manganese-containing composite oxide claim 1 , comprisingLi, Mn, O and two or more other elements,and having an operating potential of 4.5 V or more at a ...

MAGNESIUM OXIDE-CONTAINING SPINEL POWDER AND METHOD FOR PRODUCING SAME

Provided is a magnesium oxide-containing spinel powder capable of producing a ceramic sintered body having high strength and excellent strength stability. In the magnesium oxide-containing spinel powder, a 50% particle diameter (D50) is 0.30 to 10.00 μm, a ratio (D90-D50)/(D50-D10) of a difference between a 90% particle diameter (D90) and the 50% particle diameter (D50) and a difference between the 50% particle diameter (D50) and a 10% particle diameter (D10) is 1.0 to 5.0, and a composition ratio of Mg and Al in terms of an oxide equivalent content is 50 to 90% by weight of MgO and 10 to 50% by weight of AlO. 1. A magnesium oxide-comprising spinel powder , which has a volume-based cumulative 50% particle diameter (D50) in a range of from [[is]] 0.30 to 10.00 μm ,a ratio (D90-D50)/(D50-D10) of a difference between a volume-based cumulative 90% particle diameter (D90) and D50 to a difference between D50 and a volume-based cumulative 10% particle diameter (D10) in a range of from 1.0 to 5.0, and{'sub': 2', '3', '2', '3, 'a composition ratio of Mg and Al, in terms of an oxide equivalent content, of to 90% by weight of MgO and 10 to 50% by weight of AlO, based on 100% by weight of both of MgO and AlO,'}wherein D50, D90, and D10 are measured by a laser diffraction scattering particle size distribution measurement.2. The magnesium oxide-comprising spinel powder of to claim 1 , which has a loose bulk density in a range of from 0.20 to 1.50 g/cm claim 1 , and a tight bulk density in a range of from 0.30 to 2.50 g/cm.3. The magnesium oxide-comprising spinel powder of claim 1 , wherein a ceramic sintered body obtained by firing a molded product of the magnesium oxide-comprising spinel powder has a three-point bending strength of 150 MPa or more and a Weibull coefficient of 13.0 or more.4. A method for producing the magnesium oxide-comprising spinel powder of claim 1 , the method comprising: wherein the at least one kind of magnesium sources particles has a D50 in a range of ...

SPINEL PARTICLES, METHOD FOR PRODUCING SAME AND COMPOSITION AND MOLDED ARTICLE INCLUDING SPINEL PARTICLES

Alumina is generally used as an inorganic filler, while spinel, which is known to be lower in thermal conductivity than alumina, is used in applications such as gems, fluorescence emitters, catalyst carriers, adsorbents, photocatalysts and heat-resistant insulating materials, but not expected to be used as a thermally conductive inorganic filler. Thus, an object of the invention is to provide spinel particles having excellent thermal conductive properties. The invention relates to a spinel particle including magnesium, aluminum and oxygen atoms and molybdenum and having a [111] plane crystallite diameter of 220 nm or more. 1. A spinel particle comprising magnesium , aluminum , and oxygen atoms and molybdenum and having a [111] plane crystallite diameter of 220 nm or more.2. The spinel particle according to claim 1 , which has a [311] plane crystallite diameter of 100 nm or more.3. The spinel particle according to claim 1 , which has a ratio of the crystalline peak intensity of the [111] plane to the crystalline peak intensity of the [311] plane ([111] plane/[311] plane) of 0.3 or more.4. The spinel particle according to claim 1 , which has an average particle diameter of 0.1 to 1 claim 1 ,000 μm.5. A method for producing the spinel particle according to claim 1 , comprising:a firing step in which a magnesium compound and an aluminum compound are subjected to solid solution formation and crystallization in the presence of molybdenum so that a spinel particle crystal is grown; anda cooling step in which the spinel particle crystal grown in the firing step is crystallized.6. The production method according to claim 5 , wherein the aluminum compound contains molybdenum.7. The production method according to claim 5 , wherein the aluminum compound is aluminum oxide.87. The production method according to claim 5 , wherein the aluminum compound has a molar ratio of molybdenum element to aluminum element (molybdenum element/aluminum element) of 0.00001 to 0.05.9. The ...

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

A composite cathode active material, and a cathode and a lithium battery each including the composite cathode active material. The composite cathode active material includes: a core including a first lithium transition metal oxide represented by Formula 1, 2. The composite cathode active material of claim 1 , wherein the dopant comprises at least one non-nickel Group 4 to Group 13 element.4. The composite cathode active material of claim 3 , wherein M′ comprises Co claim 3 , Zn claim 3 , Fe claim 3 , Cu claim 3 , Mn claim 3 , Zr claim 3 , Ti claim 3 , Mg claim 3 , or a combination thereof.5. The composite cathode active material of claim 3 , wherein the second lithium transition metal oxide has electrochemical activity.6. The composite cathode active material of claim 1 , wherein the shell has a thickness of about 100 nanometers or less.7. The composite cathode active material of claim 1 , wherein a content of the shell is about 6 weight percent or less claim 1 , based on a total weight of the composite cathode active material.8. The composite cathode active material of claim 1 , wherein the spinel crystal structure belongs to an Fdm space group.9. The composite cathode active material of claim 1 , wherein a peak intensity ratio of an intensity of a (003) peak to an intensity of a (104) peak of the composite cathode active material is less than a peak intensity ratio of an intensity of a (003) peak to an intensity of a (104) peak of the core.10. The composite cathode active material of claim 1 , wherein a maximum peak intensity in a Raman spectrum of the composite cathode active material is positioned at about 530 inverse centimeters or greater.11. The composite cathode active material of claim 1 , wherein a peak intensity ratio of an intensity of a peak at about 530 electron volts to 533 electron volts to an intensity of a peak at about 528 electron volts to about 530 electron volts in a surface X-ray photoelectron spectrum of the composite cathode active material ...

METHOD FOR THE USE OF SLURRIES IN SPRAY PYROLYSIS FOR THE PRODUCTION OF NON-HOLLOW, POROUS PARTICLES

A process for preparing a metal oxide-containing powder that comprises conducting spray pyrolysis that comprises aerosolizing a slurry that comprises solid-phase particles in a liquid that comprises at least one precursor compound, which comprises one or more metallic elements of at least one metal oxide, to form droplets of said slurry, and calcining the droplets to at least partially decompose the at least one precursor compound and form the metal oxide-containing powder having a non-hollow morphology. 1. A material comprising a plurality of mesoporous , metal oxide-containing secondary particles with a non-hollow morphology and a mean size that is in a range of about 1 μm to about 15 μm , wherein the secondary particles comprise primary particles with a mean size that is in a range of about 50 nm to about 500 nm.2. The material of claim 1 , wherein the mean size of the secondary particles in a range of about 4 μm to about 10 μm claim 1 , wherein the standard deviation with respect to the median size for the secondary particles is in the range about 0 to about 10 claim 1 , wherein the secondary particles have an inter-primary particle spacing that is in the range of about 2 nm to about 100 nm claim 1 , and wherein the secondary particles have a Brunnauer-Emmett-Teller surface area that is in the range of about 1 m/g to about 100 m/g.3. The material of claim 1 , wherein the relative concentration of each element within any 1 micrometer region of the material does not vary more than about 4% from the mean and that the standard deviation throughout the material is no greater than about 4%.4. The material of claim 1 , wherein the metal oxide has a general chemical formula Li(NiCoMn)MOR claim 1 , wherein:M is selected from a group consisting of Al, Mg, Fe, Cu, Zn, Cr, Ag, Ca, Na, K, In, Ga, Ge, V, Mo, Nb, Si, Ti, Zr, and mixtures thereof;R is selected from a group consisting of F, Cl, Br, I, H, S, N, O and mixtures thereof; and0≦α≦0.50; 0 Подробнее

OXYGEN STORAGE CAPACITY OF NON-COPPER SPINEL OXIDE MATERIALS FOR TWC APPLICATIONS

Zero-Rare Earth Metal (ZREM) and Zero-platinum group metals (ZPGM) compositions of varied binary spinel oxides are disclosed as oxygen storage material (OSM) to be used within TWC systems. The ZREM-ZPGM OSM systems comprise binary non-Cu spinel oxides of Co—Fe, Fe—Mn, Co—Mn, or Mn—Fe. The oxygen storage capacity (OSC) property associated with the non-Cu ZREM-ZPGM OSM systems is determined employing isothermal OSC oscillating condition testing. Further, the OSC test results compare the OSC properties of a ZREM-ZPGM reference OSM system including a Cu—Mn binary spinel oxide and PGM reference catalysts including Ce-based OSMs. The non-Cu spinel oxides ZREM-ZPGM OSM systems exhibit significantly improved OSC properties, which are greater than the OSC property of the Ce-based OSM PGM reference systems. 1. A catalyst composition comprising a spinel oxide having the formula ABOwhere X is from about 0.001 to about 2.99 , A and B are different from each other and selected from the group consisting of aluminum (Al) , magnesium (Mg) , manganese (Mn) , gallium (Ga) , nickel (Ni) , silver (Ag) , cobalt (Co) , iron (Fe) , chromium (Cr) , titanium (Ti) , tin (Sn) , strontium (Sr) , and mixtures thereof , and wherein the composition is characterized by the absence of a copper (Cu) containing spinel.2. The composition of claim 1 , wherein the catalyst composition is free of platinum group metals.3. The composition of claim 1 , wherein the catalyst composition is free of rare earth metals.4. The composition of claim 1 , wherein the spinel oxide is selected from the group consisting of Co—Fe binary spinel structures claim 1 , Fe—Mn binary spinel structures claim 1 , Co—Mn binary spinel structures claim 1 , Mn—Fe binary spinel structures claim 1 , and combinations thereof.5. The composition of claim 4 , wherein the spinel oxide is CoFeO.6. The composition of claim 4 , wherein the spinel oxide is FeMnO.7. The composition of claim 4 , wherein the spinel oxide is CoMnO.8. The composition ...

Anode active material for secondary battery, preparation method thereof and secondary battery comprising the same

The present disclosure relates to an anode active material for a sodium ion secondary battery, a method for preparing the same, and a sodium ion secondary battery including the same. More particularly, the anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide obtained by a simple precipitation process, and can be applied to a sodium ion secondary battery having high capacity characteristics.

LiwNixMnyOz SPINELS AND METHOD OF MAKING AND USING THE SAME

A process is provided for synthesizing a lithium, nickel, manganese and oxygen composition, LiNiMnO, where w is from about 0.8 to about 1.2, x is from about 0.3 to about 0.8, y is from about 1.3 to about 1.8, and z is from about 3.8 to about 4.2. The composition has a lattice parameter “a” value and wt % crystalline spinel value within the bounds defined by the following lattice parameter “a” and wt % crystalline spinel coordinate values of about (8.1690 Å, 98.5%), about (8.1765 Å, 98.5%), about (8.1810 Å, 96.2%), about (8.1810 Å, 93.4%), about (8.1771 Å, 93.4%), and about (8.1690 Å, 97.6%). 1. A method , comprising:providing a precursor mixture having a molar ratio of lithium:nickel:manganese of about 2 to about 1 to about 3;charging a ball mill with the precursor mixture;milling the precursor mixture to form a milled precursor;adding a chelating agent to the milled precursor to form a chelated mixture and thereafter milling with at least one reversal of the milling direction the chelated mixture to form a milled chelated mixture; andadding a polymeric, aqueous medium to the milled chelated mixture to form a polymeric mixture and, thereafter milling with more than two reversals of the milling direction the polymeric mixture to form a milled polymeric mixture.2. The method of claim 1 , wherein the milling with at least one reversal comprises a pause of no more than 1 second between each of the least one reversal of directions.3. The method of claim 1 , wherein the milling with more than two reversals of the milling direction comprises a pause of more than 1 second between each of the more than two reversal of directions.4. The method of claim 3 , wherein the milling with more than two reversals of the milling direction further comprises two or more sub-milling steps.5. The method of claim 4 , wherein each of the two or more sub-milling steps comprise a reversal of the sub-step milling direction and wherein each of the reversal of the sub-step milling direction ...

Method for producing composite body of lithium titanate particles and carbonaceous material, and composite body of lithium titanate particles and carbonaceous material

Provided is a production method that enables the production of a composite body of lithium titanate particles and a carbonaceous material, the composite body having excellent electrical characteristics and so on, and the composite body of lithium titanate particles and a carbonaceous material. A method for producing a composite body of lithium titanate particles and a carbonaceous material includes the steps of: preparing a raw material mixture using a titanium compound, a lithium compound, and an oligomer and/or raw material monomer of an alkali-soluble resin; and subjecting the raw material mixture to heat treatment under a non-oxidizing atmosphere to produce the composite body.

MOLECULAR SIEVE COMPOSITION, PROCESS OF PREPARING SAME AND USE THEREOF

The invention relates to a molecular sieve composition, a process of preparing same and use thereof in the production of lower olefins. The molecular sieve composition comprises an aluminophosphate molecular sieve and a CO adsorbing component, both of which are present independently of each other. When the molecular sieve composition is used as a catalyst for producing lower olefins using synthesis gas as a raw material, the molecular sieve composition has the advantages of high selectivity to lower olefins and the like. 1. A molecular sieve composition comprising an aluminophosphate molecular sieve and a CO adsorbing component , wherein the CO adsorbing component comprises at least one metal oxide selected from the group consisting of an oxide of Group IIB metal of the periodic table , an oxide of Group VIB metal of the periodic table , gallium oxide and indium oxide (preferably at least one metal oxide selected from the group consisting of zinc oxide , chromium oxide , gallium oxide and indium oxide , more preferably at least one metal oxide selected from the group consisting of zinc oxide and chromium oxide , or more preferably a composite metal oxide of zinc oxide and chromium oxide) , wherein the aluminophosphate molecular sieve and the CO adsorbing component are present separately from each other , such as packed individually or mechanically mixed with each other.2. The molecular sieve composition according to claim 1 , wherein the aluminophosphate molecular sieve is at least one selected from the group consisting of AlPO4-5 claim 1 , AlPO4-11 claim 1 , AlPO4-17 claim 1 , AlPO4-18 claim 1 , AlPO4-20 claim 1 , AlPO4-31 claim 1 , AlPO4-33 claim 1 , AlPO4-34 claim 1 , AlPO4-35 claim 1 , AlPO4-44 claim 1 , and AlPO4-56 claim 1 , preferably at least one selected from the group consisting of AlPO4-17 claim 1 , AlPO4-18 claim 1 , AlPO4-31 claim 1 , AlPO4-33 claim 1 , AlPO4-34 claim 1 , and AlPO4-35 claim 1 , or preferably at least one selected from AlPO4-18 and AlPO4 ...

Surface Treatment For Lithium Battery Electrode Materials

Electrode materials for electrochemical cells and batteries and methods of producing such materials are disclosed herein. The electrode materials comprise an active lithium metal oxide material prepared by: (a) contacting the lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and (b) heating the so-contacted lithium metal oxide from step (a) to dryness at a temperature below 200° C. The metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and a main group metal ion. 1. An electrode for a non-aqueous electrochemical cell comprising an active lithium metal oxide material coated on a current collector; wherein the active lithium metal oxide is prepared by a method comprising the sequential steps of:(a) contacting a first lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and(b) heating the so-contacted first lithium metal oxide from step (a) to dryness at a temperature below 200° C. to form the active lithium metal oxide material;wherein the metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and aluminum ion; and the aqueous acidic solution has a pH of in the range of about 4 to about 7; and the first lithium metal oxide material in step (a) is a compound with a layered structure, a spinel structure, a rock salt structure, a blend of two or more of the foregoing structures, or a structurally-integrated composite of two or more of the forgoing structures.2. The electrode of claim 1 , wherein the aqueous acidic solution comprises aluminum ion and the active lithium metal oxide material exhibits a peak of about 531.5 eV adjacent to a peak at about 529.5 eV in an XPS spectrum of the material.3. The electrode of claim 1 , wherein the temperature ...

LITHIUM-CONTAINING TRANSITION METAL OXIDE AND LITHIUM ION SECONDARY CELL USING SAME

The present invention provides, as a lithium-containing transition metal oxide, a substance which is given by the chemical compositional formula LiMO(M=Cr, Co, or Zr) and has a spinel-type crystal structure. Provided is a lithium ion secondary cell having a positive electrode configured from a lithium-containing transition metal oxide which has a spinel-type crystal structure and has the chemical compositional formula LiMO(M=Cr or Co). The present invention further provides a lithium ion secondary cell having a negative electrode configured from a lithium-containing transition metal oxide which has a spinel-type crystal structure and has the chemical compositional formula LiMO(M=Zr). 1. A negative electrode material for lithium ion secondary battery comprising:{'sub': 4', '5', '12, 'a lithium-containing transition metal oxide having a spinel-type crystal structure and having the chemical compositional formula LiMO(M=Zr).'}2. A lithium ion secondary battery having:{'sub': 4', '5', '12, 'a positive electrode comprising a lithium-containing transition metal oxide having a spinel-type crystal structure and having the chemical compositional formula LiMO(M=Cr or Co);'}{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a negative electrode comprising the negative electrode material according to ; and'}a liquid or solid electrolyte having lithium ionic conductivity.3. A lithium ion secondary battery having:a positive electrode;{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a negative electrode comprising the negative electrode material according to ; and'}a liquid or solid electrolyte having lithium ionic conductivity.4. The lithium ion secondary battery according to claim 3 ,{'sub': 4', '5', '12, 'wherein the positive electrode comprises a lithium-containing transition metal oxide having a spinel-type crystal structure and having the chemical compositional formula LiCrO.'}5. The lithium ion secondary battery according to claim 3 ,{'sub': 4', '5', '12, 'wherein the ...

FERRITE POWDER, RESIN COMPOSITION, ELECTROMAGNETIC SHIELDING MATERIAL, ELECTRONIC CIRCUIT SUBSTRATE, ELECTRONIC CIRCUIT COMPONENT, AND ELECTRONIC DEVICE HOUSING

The present invention provides a powdered ferrite having high dispersibility in a resin and high electromagnetic shielding characteristics. The powdered ferrite comprises platy ferrite particles having a spinel crystal structure. The powdered ferrite comprises at least 50 number % platy ferrite particles each having at least one protrusion on a surface of the particle, and the protrusion has a shape selected from the group consisting of a rectangular pyramid, a truncated rectangular pyramid, an elongated rectangular pyramid, and combinations thereof. 1. A powdered ferrite comprising platy ferrite particles having a spinel crystal structure ,wherein the powdered ferrite comprises at least 50 number % platy ferrite particles each having at least one protrusion on a surface of the particle, and the at least one protrusion has a shape selected from the group consisting of a rectangular pyramid, a truncated rectangular pyramid, an elongated rectangular pyramid, and combinations thereof.2. The powdered ferrite according to claim 1 , wherein the height of the protrusion is smaller than the thickness of the platy ferrite particle.3. The powdered ferrite according to claim 1 , wherein the platy ferrite particles have an average plate diameter of 10 to 2000 μm.4. The powdered ferrite according to claim 1 , wherein the platy ferrite particles have an average thickness of 0.5 to 100 μm.5. The powdered ferrite according to claim 1 , wherein the platy ferrite particles have an aspect ratio of 4 to 1000.6. The powdered ferrite according to claim 1 , wherein the platy ferrite particles have indefinite shapes.7. The powdered ferrite according to claim 6 , wherein the platy ferrite particles have a shape factor SF-2 of 135 to 300.8. The powdered ferrite according to claim 1 , wherein the platy ferrite particles comprise Ni—Zn ferrite or Ni—Zn—Cu ferrite.9. A resin composition claim 1 , comprising the powdered ferrite according to and a resin.10. An electromagnetic shielding material ...

POSITIVE-ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF PRODUCING THE SAME

A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The method includes obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese, heat-treating the resulting precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product, mixing the first heat-treated product and a lithium compound, and heat-treating the resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product. The second heat-treated product contains a group of lithium transition metal composite oxide particles having an average particle diameter Dof from 0.5 μm to less than 3 μm and D/Dof 1 to 2.5. The lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese. 1. A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery , the method comprising:obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese;heat-treating the precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product;mixing the first heat-treated product and a lithium compound, and heat-treating a resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product,{'sub': SEM', '50', 'SEM', '50, 'wherein the second heat-treated product contains lithium transition metal composite oxide particles, the lithium transition metal composite oxide particles have an average particle diameter based on SEM observation Dof from 0.5 μm to less than 3 μm, and a ratio of D/Dof 1 to 2.5 where Dis a particle diameter corresponding to 50% in its volume-based cumulative particle size distribution, and the lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese.'}2. The ...

THERMALLY CONDUCTIVE COMPLEX OXIDE, PRODUCTION METHOD THEREFOR, THERMALLY CONDUCTIVE COMPLEX OXIDE-CONTAINING COMPOSITION, AND USE THEREFOR

An object of the present invention is to provide a thermally conductive composite oxide that can realize physical properties required for coating films, films, and molded products obtained by single use of the thermally conductive composite oxide blended into paints and resin compositions without the need for an improvement measure such as surface treatment and that is excellent in thermal conductivity, water resistance, acid resistance, and electric insulation. The object is achieved by a thermally conductive composite oxide and the production process thereof, the thermally conductive composite oxide being a composite oxide having a spinel structure and containing aluminum as a main component metal and at least one metal other than aluminum, and in the thermally conductive composite oxide, the metal other than aluminum is at least one selected from the group consisting of magnesium, zinc, calcium, and strontium, the ratio, (b mol)/(a mol), of the number of moles (b) of the metal other than aluminum to the number of moles (a) of an aluminum element in the alumina-based compound is 0.1 or more and 1.0 or less, and the Mohs hardness of the thermally conductive composite oxide is less than 9. 1. A thermally conductive composite oxide being a composite oxide having a spinel structure , obtained by firing at least an alumina-based compound and a compound of a metal other than aluminum , and comprising:aluminum as a main component metal; andat least one metal other than aluminum,wherein the metal other than aluminum is at least one selected from the group consisting of magnesium, zinc, calcium and strontium,a ratio, (b mol)/(a mol), of a number of moles (b) of the metal other than aluminum to a number of moles (a) of an aluminum element in the alumina-based compound is 0.1 or more and 1.0 or less, anda Mohs hardness of the thermally conductive composite oxide is less than 9.2. The thermally conductive composite oxide according to claim 1 , wherein a content ratio of each ...

Core-shell particle and manufacturing method and fired product of the same, epsilon type iron oxide compound particle and manufacturing method of the same, and magnetic recording medium and manufacturing method of the same

A core-shell particle includes: a core including an iron oxyhydroxide compound represented by Formula A3a3Fe1−a3OOH (in which A3 represents at least one metal element other than Fe, and a3 satisfies 0<a3<1) or at least one iron oxide compound selected from the group consisting of Fe2O3, a compound represented by Formula A1a1Fe2−a1O3 (in which A1 represents at least one metal element other than Fe, and a1 satisfies 0<a1<2), Fe3O4, and a compound represented by Formula A2a2Fe3−a2O4 (in which A2 represents at least one metal element other than Fe, and a2 satisfies 0<a2<2); and a shell which covers the core and includes a polycondensate of a metal alkoxide.

SPINEL MATERIAL

A process for producing a doped lithium manganese-oxide spinel material includes producing, by means of a solid-state reaction, a spinel precursor comprising lithium-manganese-oxide doped with nickel. The precursor is subjected to microwave treatment, to obtain a treated precursor. The treated precursor is annealed to obtain a nickel-doped lithium-manganese-oxide spinel material. 1. A process for producing a doped lithium-manganese-oxide spinel material , which process includesproducing, by means of a solid-state reaction, a spinel precursor comprising lithium-manganese-oxide doped with nickel;subjecting the precursor to microwave treatment, to obtain a treated precursor; andannealing the treated precursor, to obtain a nickel-doped lithium-manganese-oxide spinel material.2. The process according to claim 1 , wherein the solid state reaction includes heating a mixture of a solid manganese precursor material claim 1 , a solid nickel precursor material claim 1 , a solid lithium precursor material and a fuel or reducing agent to an elevated temperature claim 1 , and maintaining it at the elevated temperature for a period of time.3. The process according to claim 2 , wherein the solid manganese precursor material is an oxide claim 2 , a hydroxide or a salt of manganese; the solid nickel precursor material is an oxide claim 2 , a hydroxide or a salt of nickel; the solid lithium precursor material is an oxide claim 2 , a hydroxide or a salt of lithium; and the fuel or reducing agent is urea claim 2 , hydrazine claim 2 , glycine claim 2 , or a carbohydrate.4. The process according to claim 2 , wherein the elevated temperature to which the mixture is heated is at least 400° C.5. The process according to claim 2 , wherein the period of time for which the mixture is maintained at the elevated temperature is at least 5 minutes.6. The process according to claim 1 , wherein the microwave treatment comprises subjecting the precursor to microwaves for between 10 and 30 minutes.7. ...

Positive manganese lithium oxide-stabilised electrode for a secondary lithium battery and a method for producing same

The present invention provides the compound LiMn2--x-yNaxMyO4/Na1-zMnLizMtO2/Na2CO3, to be used as a positive electrode for rechargeable lithium ion battery, where M is a metal or metalloid, 0.0≤x≤0.5; 0.0≤y≤0.5; 0.1≤z≤0.5; 0.0≤t≤0.3; as well as the method for producing it. The synthesis process includes disolving or mixing the precursor metals and then calcining them in air or controlled atmosphere in a temperature range between 250° C. and 1000° C., and for a time range of 0.5 h to 72 h to obtain the composite proposed with the interaction of its three present phases, presenting a high retention capacity during repeated loading/unloading cycles and excellent discharge capacity both at room temperature and up to 55° C.