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Iron component is active material

Subclass of:

429 - Chemistry: electrical current producing apparatus, product, and process

429122000 - CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS

429209000 - Electrode

429218100 - Chemically specified inorganic electrochemically active material containing

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DocumentTitleDate
20080261114ANODE ACTIVE MATERIAL AND SECONDARY BATTERY - A secondary battery having a high capacity and superior cycle characteristics and an anode active material used for it are provided. The anode active material contains, as an element, at least tin (Sn), iron (Fe), cobalt (Co), and carbon (C). A carbon content is in the range from 11.9 wt % to 29.7 wt %, a total ratio of iron and cobalt to a total of tin, iron, and cobalt is in the range from 26.4 wt % to 48.5 wt %, and a cobalt ratio to a total of iron and cobalt is in the range from 9.9 wt % to 79.5 wt %. A reactive phase capable of reacting with an electrode reactant is included. A half-width of a diffraction peak obtained by X-ray diffraction (peak observed at diffraction angle 2θ of between 41 degrees and 45 degrees) is 1.0 degree or more.10-23-2008
20080261113SECONDARY ELECTROCHEMICAL CELL WITH HIGH RATE CAPABILITY - The invention provides an electrochemical cell which includes a first electrode having a electrode active material, a second electrode which is a counter electrode to the first electrode, and an electrolyte. The negative electrode active material is represented by the general formula E10-23-2008
20130136989LITHIUM ION PHOSPHATE HIERARCHICAL STRUCTURE, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - A lithium iron phosphate hierarchical structure includes a plurality of lithium iron phosphate nano sheets and has an overall spherical-shaped structure. The overall spherical-shaped structure is constructed by a plurality of lithium iron phosphate nano sheets layered together. A method for making a lithium iron phosphate hierarchical structure includes several steps. In the method, a lithium ion contained liquid solution, a ferrous ion contained liquid solution, and a phosphate ion contained liquid solution are respectively provided. A concentration of lithium ions in the lithium ion contained liquid solution is equal to or larger than 1.8 mol/L. The lithium ion contained liquid solution, the ferrous ion contained liquid solution, and the phosphate ion contained liquid solution are mixed to form a liquid mixture. The liquid mixture is heated in a sealed reactor to form the lithium iron phosphate hierarchical structure.05-30-2013
20120183855Positive active electrode material for lithium secondary battery, process for preparing the same and lithium secondary battery - Positive active electrode material for lithium secondary batteries comprising a mixed oxide represented by the general formula Li07-19-2012
20100112446ACTIVE ELECTRODE MATERIAL, MANUFACTURING METHOD OF SAME, AND LITHIUM-ION BATTERY USING THAT ACTIVE ELECTRODE MATERIAL - Electrode active material is provided which is mainly an amorphous iron-phosphate complex represented by Li05-06-2010
20130078518Electrode Structures and Surfaces For Li Batteries - This invention relates to positive electrode materials for electrochemical cells and batteries. It relates, in particular, to electrode precursor materials comprising manganese ions and to methods for fabricating lithium-metal-oxide electrode materials and structures using the precursor materials, notably for lithium cells and batteries. More specifically, the invention relates to lithium-metal-oxide electrode materials with layered-type structures, spinel-type structures, combinations thereof and modifications thereof, notably those with imperfections, such as stacking faults and dislocations. The invention extends to include lithium-metal-oxide electrode materials with modified surfaces to protect the electrode materials from highly oxidizing potentials in the cells and from other undesirable effects, such as electrolyte oxidation, oxygen loss and/or dissolution.03-28-2013
20130078517ELECTRODE ACTIVE MATERIAL, ELECTRODE COMPRISING THE SAME, LITHIUM BATTERY COMPRISING THE ELECTRODE, AND METHOD OF PREPARING THE ELECTRODE ACTIVE MATERIAL - An electrode active material, an electrode including the electrode active material, a lithium battery including the electrode, and a method of preparing the electrode active material. The electrode active material includes a core having at least one of a metal or a metal oxide that enables intercalation and deintercalation of lithium ions and a crystalline carbon thin film that is formed on at least a portion of a surface of the core. The electrode active material has a nano-structure.03-28-2013
20130078519PRODUCTION PROCESS FOR LITHIUM-SILICATE-BASED COMPOUND - A production process for lithium-silicate-based compound according to the present invention is characterized in that: a lithium-silicate compound being expressed by Li03-28-2013
20120244443CATHODE ACTIVE MATERIAL, CATHODE ELECTRODE AND NON-AQUEOUS SECONDARY BATTERY - A cathode active material comprising a composition represented by the following general formula (1):09-27-2012
20120244442BATTERY ACTIVE MATERIAL, NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK - According to one embodiment, a battery active material includes a complex oxide containing Nb and Ti and an element M. In the active material, the molar ratio (M/Ti) of the element M to Ti satisfies the following formula (I): 009-27-2012
20090155689Lithium iron phosphate cathode materials with enhanced energy density and power performance - The invention is related to a cathode material comprising particles having a lithium metal phosphate core and a pyrolytic carbon deposit, said particles having a synthetic multimodal particle size distribution comprising at least one fraction of micron size particles and one fraction of submicron size particles, said lithium metal phosphate having formula LiMPO06-18-2009
20100143801LITHIUM METAL COMPOSITE OXIDE PARTICLES, PROCESS OF PRODUCING LITHIUM METAL COMPOSITE OXIDE PARTICLES, ELECTRODE STRUCTURE CONTAINING LITHIUM METAL COMPOSITE OXIDE PARTICLES, PROCESS OF PRODUCING ELECTRODE STRUCTURE , AND LITHIUM SECONDARY BATTERY HAVING ELECTRODE STRUCTURE - There is provided a lithium secondary battery having a high capacity and excellent high-rate discharge characteristic and charge/discharge cycle characteristic. The lithium secondary battery comprises a negative electrode, a positive electrode and an ionic conductor, wherein the positive electrode comprises lithium metal composite oxide particles; the lithium metal composite oxide particles comprise a plurality of secondary particles in an elongated shape each comprised of a plurality of primary particles with an average particle size of 0.1 to 1 μm so aggregated as to form a void therebetween; and the secondary particle is columnar or planar and has an average size in a long length direction of 5 to 15 μm.06-10-2010
20130029227POLYANION ACTIVE MATERIALS AND METHOD OF FORMING THE SAME - A method of forming a polyanion active material that includes providing a carbon source, providing a mobile ion source, providing an active metal material, providing a network material, providing a flux material, and mixing the various materials. In one aspect, the mixing step may include grinding or pulverizing materials to a uniform fine mixture. In one aspect, a ball mill may be utilized to mix the components. Following the mixing of the materials, the mixture is heated to a predetermined temperature in a non-oxidizing atmosphere to form a reaction product. In one aspect, the mixture is heated to a temperature above a melting temperature of the flux material. In this manner, the flux material provides a medium in which the various reactants may react to form the desired reaction product. Following the heating of the mixture the reaction product is washed, forming a carbon coated polyanion active material. Also disclosed is a polyanion active material that includes the in situ reaction product of a carbon source, mobile ion source, active metal material, network material, and a flux material wherein the polyanion active material includes a carbon coating formed thereon.01-31-2013
20090123841SECONDARY BATTERY ELECTRODE INK, LITHIUM-ION BATTERY, AND ELECTRONIC DEVICE - A secondary battery electrode ink is adapted to be discharged from a droplet discharge device to make an electrode layer of a secondary battery. The secondary battery electrode ink includes an active substance including at least one of a positive electrode active substance and a negative electrode active substance, and a liquid medium. The liquid medium dissolves and/or disperses the active substance. The liquid medium has a characteristic in which, when a cured epoxy adhesive material is put into the liquid medium under a sealed condition at an atmospheric pressure and a temperature of approximately 50° C. and left for ten days, a weight increase rate of the cured epoxy adhesive material is 130% or less.05-14-2009
20130089786ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING THE ELECTRODE ACTIVE MATERIAL, ELECTRODE FOR LITHIUM SECONDARY BATTERY INCLUDING THE SAME, AND LITHIUM SECONDARY BATTERY USING THE SAME - An electrode active material for a lithium secondary battery, a method of preparing the electrode active material, an electrode for a lithium secondary battery which includes the same, a lithium secondary battery using the electrode. The electrode active material includes a core active material and a coating layer including magnesium aluminum oxide (MgAlO04-11-2013
20130071747High Density Lithium Cobalt Oxide for Rechargeable Batteries - The disclosure relates to positive electrode material used for Li-ion batteries, a precursor and process used for preparing such materials, and Li-ion battery using such material in its positive electrode. The disclosure describes a higher density LiCoO03-21-2013
20130071746NEGATIVE-ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND BATTERY - A negative-electrode active material includes a compound that has a pseudobrookite structure.03-21-2013
20120308891METHOD OF MANUFACTURING ELECTRODE - To increase the conductivity and electric capacity of an electrode which includes active material particles and the like and is used in a battery, a graphene net including 1 to 100 graphene sheets is used instead of a conventionally used conduction auxiliary agent add binder. The graphene net which has a two-dimensional expansion and a three-dimensional structure is more likely to touch active material particles or another conduction auxiliary agent, thereby increasing the conductivity and the bonding strength between active material particles. This graphene net is obtained by mixing graphene oxide and active material particles and then heating the mixture in a vacuum or a reducing atmosphere.12-06-2012
20090297950Lithium battery - The present invention is to provide a lithium iron battery includes cathode films, each having an accumulation structure added with activated materials, anode films, and electrolysis liquid. In that, an activated material (i.e. lithium phosphate based cathode added with lithium-nickel-cobalt-manganese mixed metal oxide) has a voltage plateau larger than the lithium phosphate applied to the cathode.12-03-2009
20130065130METHOD OF FABRICATING ELECTRODES INCLUDING HIGH-CAPACITY, BINDER-FREE ANODES FOR LITHIUM-ION BATTERIES - An electrode (03-14-2013
20130065129POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - Provided is a positive electrode for a rechargeable lithium battery including a positive active material including a lithium phosphate compound particle and fiber-type carbon attached inside the lithium phosphate compound particle, a method of preparing the same, and a rechargeable lithium battery including the same.03-14-2013
20130164622POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A positive active material for a rechargeable lithium battery including a compound represented by the following Chemical Formula 1:06-27-2013
20110020703CATHODE PLATE FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREOF AND SECONDARY BATTERY PROVIDED WITH THE CATHODE PLATE - Disclosed is a cathode plate for a secondary battery, which includes a collector, and a cathode active material layer, wherein the cathode active material layer is formed of multiple layers of coating films formed on a surface of the collector and obtained by application and drying of an aqueous paste, which is obtained by kneading and dispersing an iron lithium phosphate material having an olivine structure as the cathode active material, an electroconductive material, a water-soluble thickner, a binder, and water as a dispersion medium.01-27-2011
20120237828NANOARCHITECTURED MULTI-COMPONENT ELECTRODE MATERIALS AND METHODS OF MAKING THE SAME - At least one embodiment of the present invention provides preparation methods and compositions for nanoarchitectured multi-component materials based on carbon-coated iron-molybdenum mixed oxide as the electrode material for energy storage devices. A sol-gel process containing soluble organics is a preferred method. The soluble organics could become a carbon coating for the mixed oxide after thermal decomposition. The existence of the carbon coating provides the mixed oxide with an advantage in cycling stability over the corresponding carbon-free mixed oxide. For the carbon-coated mixed oxide, a stable cycling stability at high charge/discharge rate (3A/g) can be obtained with Mo/Fe molar ratios ≧1/3. The cycling stability and rate capability could be tuned by incorporating a structural additive such as Al09-20-2012
20100183923Electrode Active Material and Lithium Secondary Battery - Electrode active material that is used together with an electrolyte solution having an electrolyte decomposition potential Ve is represented by the general expression LixFeMyO2 and is amorphous. In the expression, x and y are values which independently satisfy 107-22-2010
20100092865CARBON COMPOSITE MATERIALS AND PROCESS FOR PRODUCTION THEREOF - The invention provides materials capable of giving electrodes having the smaller rate of the capacity loss due to an irreversible capacity in the initial cycle in the charge and discharge cycle test as compared with electrodes comprising conventional materials; and a process for the production thereof. A carbon composite material comprising a carbon material and a metal oxide coating on the surface of the carbon material, wherein the metal oxide is an Fe-containing metal oxide; a carbon composite material, wherein the above-described carbon material is mesoporous carbon; a carbon composite material, wherein the above-described Fe-containing metal oxide is Fe04-15-2010
20120129050FLUOROSULPHATES USEFUL AS ELECTRODE MATERIALS - A material is made up of particles of an optionally-doped fluorosulphate. The fluorosulphate has a distorted Tavorite type structure of formula (A05-24-2012
20110300446LITHIUM BATTERY CATHODE COMPOSITE MATERIAL - A lithium battery cathode composite material includes a number of composite particles. Each of the composite particles includes one lithium vanadium phosphate particle and a lithium iron phosphate layer. The lithium iron phosphate layer is disposed on a surface of the lithium vanadium phosphate particle. The lithium iron phosphate layer includes a number of uniformly disposed lithium iron phosphate particles.12-08-2011
20110086273ELECTRODE MATERIALS WITH HIGH SURFACE CONDUCTIVITY - The present invention concerns electrode materials capable of redox reactions by electrons and alkali ions exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, super capacitors and light modulating system of the super capacitor type.04-14-2011
20110281167THIN FILM SOLID STATE LITHIUM ION SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - A high-performance and inexpensive thin film solid state lithium ion secondary battery that is able to be charged and discharged in the air and is able to be manufactured stably at a favorable yield, and a method of manufacturing the same are provided. The thin film solid state lithium ion secondary battery has an electric insulating substrate 11-17-2011
20100167127LITHIUM IRON PHOSPHATE BATTERY ELECTRODE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an electrode for the lithium iron phosphate battery and the manufacturing method thereof, and more particularly, to a coated electrode for the lithium iron phosphate with a smooth surface and without de-powder phenomenon and the manufacturing method thereof. The electrode provided in the present invention uses an arabic gum modified by adding silicone-based gel into the arabic gum. The lithium iron phosphate active material and the conductive agent in a certain ratio are added into the aforesaid modified arabic gums, after the mixing process, a liquid slurry with a certain viscosity is formed. Then, the liquid slurry is coated uniformly onto a positive current collector of aluminum foil or mesh, and followed by the process like drying, calendaring, cutting and etc. to form positive electrode plate. The electrode in the present invention has the characteristics of smooth surface and no de-powder phenomenon. The difficult-to-coat problem in manufacturing lithium ion battery electrode with lithium iron phosphate in the prior art is overcome.07-01-2010
20130022873HIGH-POWER NANOCOMPOSITE CATHODES FOR LITHIUM ION BATTERIES - A method of growing electrochemically active materials in situ within a dispersed conductive matrix to yield nanocomposite cathodes or anodes for electrochemical devices, such as lithium-ion batteries. The method involves an in situ formation of a precursor of the electrochemically active materials within the dispersed conductive matrix followed by a chemical reaction to subsequently produce the nanocomposite cathodes or anodes, wherein: the electrochemically active materials comprise nanocrystalline or microcrystalline electrochemically active metal oxides, metal phosphates or other electrochemically active materials; the dispersed conductive matrix forms an interconnected percolation network of electrically conductive filaments or particles, such as carbon nanotubes; and the nanocomposite cathodes or anodes comprise a homogeneous distribution of the electrochemically active materials within the dispersed conductive matrix.01-24-2013
20100227220LITHIUM-OXYGEN (AIR) ELECTROCHEMICAL CELLS AND BATTERIES - This invention provides a lithium-oxygen or lithium-air electrochemical cell comprising a negative electrode, an electrolyte, and a porous activated positive electrode comprising lithium-rich electrocatalytic materials suitable for use in lithium-oxygen (air) cells and batteries. The activated positive electrode is produced by activating a precursor electrode formed from a material comprising one or more metal oxide compounds of general formula xLi09-09-2010
20100035154ELECTRODE ACTIVE MATERIAL AND MANUFACTURING METHOD OF SAME - Electrode active material of the invention is such that a Li02-11-2010
20090017381ELECTRODE FOR NON-AQUEOUS ELECTROLYTE BATTERY AND NON-AQUEOUS ELECTROLYTE BATTERY - An electrode for a non-aqueous electrolyte battery includes a current collector formed of aluminum foil or aluminum alloy foil, and an active material-containing layer formed on a surface of the current collector and containing an active material, a conductive agent and a binder. The conductive agent comprises a carbon particle group containing first carbon particles each exhibiting an aspect ratio of more than one. A portion of each of the first carbon particles is embedded into the current collector to the depth corresponding to 20 to 50% of the thickness of the current collector. A major axis of each of the first carbon particles has a length of 1.05 to 1.50 times as large as the thickness of the active material-containing layer.01-15-2009
20110269023POWER STORAGE DEVICE - A power storage device including a positive electrode having a positive electrode active material and a positive electrode current collector; and a negative electrode which faces the positive electrode with an electrolyte provided between the negative electrode and the positive electrode is provided. The positive electrode active material includes a first region which includes a phosphate compound containing lithium and nickel; and a second region which covers the first region and includes a compound containing lithium and one or more of iron, manganese, and cobalt, but not containing nickel. Since the entire superficial portion of a particle of the positive electrode active material does not contain nickel, nickel is not in contact with an electrolyte solution; thus, generation of a catalyst effect of nickel can be suppressed, and a high discharge potential of nickel can be utilized.11-03-2011
20110269021LITHIUM ION BATTERY - A lithium ion battery includes a negative electrode, a positive electrode, an separator between the electrodes, and electrolyte for submerging the electrodes. The negative electrode is made of active materials including at least one lowly graphitized carbon material and least one highly graphitized carbon material. The positive electrode made of active materials including lithium ion, transition metal ion and polyanion. The polyanion is selected from the group consisting of phosphate, silicate, sulfate and hydrofluoric acid. The transition metal ion is selected from the group consisting of the divalent ions of iron and manganese.11-03-2011
20100028777Nonaqueous Electrolyte Secondary Batteries - The present invention is intended to improve load characteristics at the time of charging or discharging by assuring a lithium ion transport pathway in the crystal structure of olivine lithium-containing manganese phosphate. There is used a positive electrode active material which is a composite material comprising a material having an olivine structure and represented by Li02-04-2010
20100112444ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERIES - An electrode for non-aqueous secondary batteries that is capable of intercalating and de-intercalating an alkali metal, such as lithium, and a non-aqueous secondary battery comprising the electrode are disclosed. The electrode comprises an electrode current collector, and, on the electrode current collector, an electrode active material. The electrode active material has the overall composition: Si05-06-2010
20090148771CATHODE AND NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolyte battery includes a cathode having a cathode active material layer including a lithium phosphate compound having an olivine structure; an anode having an anode active material; and a nonaqueous electrolyte, wherein the cathode active material layer includes a carbon material, of which a ratio of a peak intensity at 1,360 cm06-11-2009
20100086851POSITIVE ELECTRODE AND METHOD FOR MANUFACTURING THE SAME AND LITHIUM BATTERY UTILIZING THE SAME - Disclosed is a positive electrode applied in lithium battery and method for manufacturing the same. First, a lithium alloy oxide layer is formed on a substrate. Subsequently, an additional high density and low energy plasma treatment is processed, such that the lithium alloy oxide layer has a top surface composed of uniform, dense, and inter-necked nano grains, and the in-side/bottom grains of the oxide layer remain unchanged. According to experiments, the positive electrode with such properties has higher capacity and longer cycle lifetime, thereby improving the lithium battery performance.04-08-2010
20100266899Electrodes Comprising Mixed Active Particles - An electrode active material comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from: 10-21-2010
20090297949Lithium Primary Cells - Primary lithium cells are provided, the cells having an anode comprising lithium and a cathode comprising iron disulfide. Features of the cells are optimized in order to enhance the cell performance within the constraints imposed by the maximum permitted level of lithium and standard cell dimensions.12-03-2009
20100086852Room Temperature Single Phase Li Insertion/Extraction Material for Use in Li-Based Battery - The invention relates to active materials for the manufacture of Li-based batteries. A crystalline nanometric powdered material with formula Li04-08-2010
20100081054Lithium battery - A lithium battery includes anode piece, cathode piece and electrolyte. The anode piece includes anode accumulation structure and anode film attached thereto; the cathode piece includes cathode accumulation structure and cathode film attached thereto; on an identical area surface, reversible capacities of cathode/anode activated materials are in the range of 1.4˜2.4. The lithium battery of the present invention with capacity larger than 5 Ah can achieve preferable safety.04-01-2010
20120295161LITHIUM ION BATTERY CATHODE AND LITHIUM ION BATTERY USING THE SAME - The present disclosure relates to a lithium ion battery cathode. The lithium ion battery cathode includes a plurality of cathode active material particles and a conductive carrier. The conductive carrier includes a plurality of carbon nanotubes. The plurality of carbon nanotubes are entangled with each other to form a net structure. The present disclosure also relates to a lithium ion battery.11-22-2012
20090263718Positive electrode for lithium secondary cell and lithium secondary cell using the same - A positive electrode for a lithium secondary cell is provided that is excellent in dispersibility and adhesion of the conductive agent and provides a lithium secondary cell excellent in performance. The positive electrode for a lithium secondary cell contains a positive electrode active substance represented by the following formula (I), a conductive agent and a binder, and the conductive agent has an average particle diameter of from 3 to 20 μm measured by a laser diffraction scattering method:10-22-2009
20110200879NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material, a negative electrode, and a non-aqueous electrolyte. The positive electrode active material includes a lithium-containing oxide obtained by ion exchanging a portion of sodium contained in a cobalt-containing oxide with lithium, the cobalt-containing oxide represented by the formula Li08-18-2011
20100124703CATHODE ACTIVE MATERIAL, CATHODE, AND NONAQUEOUS SECONDARY BATTERY - The present invention realizes a cathode active material which not only excels in safety and cost but also makes it possible to provide a long-life battery. The cathode active material is represented by the general formula (1):05-20-2010
20090280411POSITIVE ELECTRODE, PRODUCTION METHOD THEREOF, AND LITHIUM SECONDARY BATTERY USING THE SAME - A positive electrode for a lithium secondary battery obtained by bonding a positive electrode-active material, a conductive material, and a current collector with a carbon which has a graphitization degree expressed by a peak intensity ratio, i.e. the ratio of peak intensity at 1360 cm11-12-2009
20120295162POSITIVE ELECTRODE MATERIAL FOR A LITHIUM-ION ACCUMULATOR - A compound of formula Li11-22-2012
20090280412LITHIUM COMPOSITE METAL OXIDE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a lithium composite metal oxide containing Li and at least one transition metal element, wherein at least one lithium composite metal oxide particle constituting the lithium composite metal oxide has both hexagonal and monoclinic crystal structures. Further, the present invention also provides a lithium composite metal oxide containing Li, Ni and M (where, M represents one or more kinds of transition metal elements selected from the group consisting of Mn, Co and Fe), having a diffraction peak (diffraction peak A) at an angle 2θ in a range from 20° to 23° in a powder X-ray diffraction pattern of a lithium composite metal oxide which is obtained by powder X-ray diffraction measurement made in the condition that CuKα is used as a radiation source and the measurement range of diffraction angle 2θ is in a range from 10° to 90°.11-12-2009
20130216913NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery comprises: a positive electrode containing a lithium-transition metal complex oxide having a layered structure as a positive electrode active material; a negative electrode containing a negative electrode active material capable of occluding and releasing lithium ions; and a nonaqueous electrolyte, wherein the lithium-transition metal complex oxide is represented by the general formula Li08-22-2013
20090169996Hybrid nano-filament anode compositions for lithium ion batteries - This invention provides a hybrid nano-filament composition for use as an electrochemical cell electrode. The composition comprises: (a) an aggregate of nanometer-scaled, electrically conductive filaments that are substantially interconnected, intersected, or percolated to form a porous, electrically conductive filament network comprising substantially interconnected pores, wherein the filaments have an elongate dimension and a first transverse dimension with the first transverse dimension being less than 500 nm (preferably less than 100 nm) and an aspect ratio of the elongate dimension to the first transverse dimension greater than 10; and (b) micron- or nanometer-scaled coating that is deposited on a surface of the filaments, wherein the coating comprises an anode active material capable of absorbing and desorbing lithium ions and the coating has a thickness less than 20 μm (preferably less than 1 μm). Also provided is a lithium ion battery comprising such an electrode as an anode. The battery exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life.07-02-2009
20110206989Method for Producing Composite Lithium Iron Phosphate Material and Composite Lithium Iron Phosphate Material Produced by Same - A method for producing a composite lithium iron phosphate material, which comprises formulating lithium iron phosphate material and purified water at a weight ratio of 1:5-15 into a suspension solution, slowly adjusting the pH value of the suspension solution to 1-3 with phosphoric acid at a concentration of 5-30%, adding an analytically pure soluble chloride in an amount of 0.05-2% based on the molar amount of the lithium iron phosphate material; then adding ammonia water into the solution to adjust the pH value of the solution to 5-6 to obtain hydroxide colloid; drying liquid through spraying to prepare powder, and calcining at 300-450° C. for 3-6 hours under an inert atmosphere; coating the oxide with high conductivity obtained by thermally decomposing the hydroxide colloid on the surface of the lithium iron phosphate material grains; ball milling and sieving the calcined material into a finished product. Also disclosed is the composite lithium iron phosphate material produced by such a method.08-25-2011
20090169997NON-AQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery includes an electrode group includes a positive electrode and a negative electrode disposed through a separator, and a non-aqueous electrolyte. The negative electrode comprises a current collector and a porous negative electrode layer formed on the current collector and containing a lithium compound. The porous negative electrode layer has a first peak at a pore diameter of 0.04 to 0.15 μm and a second peak at a pore diameter of 0.8 to 6 μm in the relation between the pore diameter and log differential intrusion obtained in the mercury press-in method.07-02-2009
20080241690Crystalline Nanometric LiFePO4 - The present invention relates to lithium secondary batteries and more specifically to positive electrode materials operating at potentials greater than 2.8 V vs. Li10-02-2008
20090186276Hybrid nano-filament cathode compositions for lithium metal or lithium ion batteries - This invention provides a hybrid nano-filament composition for use as a cathode active material. The composition comprises (a) an aggregate of nanometer-scaled, electrically conductive filaments that are substantially interconnected, intersected, or percolated to form a porous, electrically conductive filament network, wherein the filaments have a length and a diameter or thickness with the diameter or thickness being less than 500 nm; and (b) micron- or nanometer-scaled coating that is deposited on a surface of the filaments, wherein the coating comprises a cathode active material capable of absorbing and desorbing lithium ions and the coating has a thickness less than 10 μm, preferably less than 1 μm and more preferably less than 500 nm. Also provided is a lithium metal battery or lithium ion battery that comprises such a cathode. Preferably, the battery includes an anode that is manufactured according to a similar hybrid nano filament approach. The battery exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life.07-23-2009
20090186277MIXED METAL OLIVINE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES - A positive electrode material is provided including an electroactive material having one or more phases comprising lithium (Li), an electroactive metal (M), and phosphate (PO07-23-2009
20090004567Cathode Active Material and Battery - A battery capable of improving load characteristics, low-temperature characteristics and high-temperature cycle characteristics is provided. A cathode (01-01-2009
20090004568ANODE AND BATTERY - A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution. The anode has an anode current collector, an anode active material layer provided on the anode current collector, and a coat provided on the anode active material layer, in which the coat contains a fluorine resin having an ether bond.01-01-2009
20130216912ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE ELECTRODE, AND LITHIUM SECONDARY BATTERY INCLUDING THE ELECTRODE - An electrode for a lithium secondary battery includes a silicon-based alloy, and has a surface roughness of about 1 to about 10 μm and a surface roughness deviation of 5 μm or less. A method of manufacturing the electrode includes mixing an electrode composition, milling the composition, coating the milled composition on a current collector, and drying the milled composition. A lithium secondary battery includes the electrode.08-22-2013
20090286159Lithium secondary battery and electrodes for use therein - The present invention relates to a positive electrode for a rechargeable lithium ion battery comprised of single particles containing a compound of the formula LiMPCU, whereby M is a metal selected from the group consisting of Co, Ni, Mn, Fe, Ti or combinations thereof, and whereby in a X-Ray diffraction chart of the electrode the ratio of the intensity I11-19-2009
20110143204Lithium-Containing Electrode Material for Electrochemical Cell Systems - An electrode material is provided to include a Li-containing oxide of the formula of Li(Ni06-16-2011
20110229764POWER STORAGE DEVICE AND MANUFACTURING METHOD THEREOF - A power storage device comprising a positive electrode which includes in a positive electrode active material layer, lithium iron phosphate particles whose surface is supported by a carbon material and whose half width of the X-ray diffraction peak is less than or equal to 0.17°, or greater than or equal to 0.13° and less than or equal to 0.165′ or whose particle size is greater than or equal to 20 nm and less than 50 nm or greater than or equal to 30 nm and less than 40 nm; or a method for manufacturing a power storage device comprising the steps of mixing the lithium iron phosphate particles, a conduction auxiliary agent, and a binder so as to be a paste, and applying the paste on a current collector, thereby manufacturing a positive electrode.09-22-2011
20110229765Electrodes Comprising Mixed Active Particles - An electrode active material comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from: 09-22-2011
20090117464FABRICATION METHOD FOR ELECTRODE ACTIVE MATERIAL AND LITHIUM BATTERY COMPRISING ELECTRODE ACTIVE MATERIAL FABRICATED THEREFROM - Disclosed is a fabrication method for an electrode active material, and a lithium battery comprising an electrode active material fabricated therefrom. The fabrication method for an electrode active material comprises preparing an aqueous solution by dissolving a precursor that can simultaneously undergo positive ion substitution and surface-reforming processes in water; mixing and dissolving raw materials for an electrode active material with a composition ratio for a final electrode active material in the aqueous solution, thereby preparing a mixed solution; removing a solvent from the mixed solution, thereby forming a solid dry substance; thermal-processing the solid dry substance; and crushing the thermal-processed solid dry substance.05-07-2009
20090239148HIGH VOLTAGE CATHODE COMPOSITIONS - Cathode compositions for lithium-ion electrochemical cells are provided that have excellent stability at high voltages. These materials include a plurality of particles having an outer surface and a lithium electrode material in contact with at least a portion of the outer surface of the particles. The particles includes a lithium metal oxide that includes manganese, nickel, and cobalt, and the lithium electrode material has a recharged voltage that is lower vs. Li/Li09-24-2009
20100261060LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR ANALYZING THE SAME - Provided is an olivine-type lithium iron phosphate having a composition represented by Formula I, comprising 0.1 to 5% by weight of Li10-14-2010
20110111299LITHIUM ION BATTERIES WITH TITANIA/GRAPHENE ANODES - Lithium ion batteries having an anode comprising at least one graphene layer in electrical communication with titania to form a nanocomposite material, a cathode comprising a lithium olivine structure, and an electrolyte. The graphene layer has a carbon to oxygen ratio of between 15 to 1 and 500 to 1 and a surface area of between 400 and 2630 m05-12-2011
20100239909CATHODE MIX CONTAINING HAVING IMPROVED EFFICIENCY AND ENERGY DENSITY OF ELECTRODE - Provided is a cathode mix for lithium secondary batteries, comprising a cathode active material having a composition represented by the following Formula I: LiFe(P09-23-2010
20130216911ACTIVE MATERIAL, ELECTRODE, SECONDARY BATTERY, BATTERY PACK, ELECTRIC VEHICLE, ELECTRIC ENERGY STORAGE SYSTEM, ELECTRIC POWER TOOL, AND ELECTRONIC UNIT - A secondary battery includes: a cathode; an anode; and an electrolytic solution. The cathode includes two or more kinds of lithium transition metal complex phosphate particles including lithium and one or two or more transition metals as constituent elements, and the composition of the one or two or more transition metals differs between the two or more kinds of lithium transition metal complex phosphate particles.08-22-2013
20100255374NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery comprising 10-07-2010
20090291366Method of preparing cathode containing Iron disulfide for a lithium cell - A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS11-26-2009
20100112445SECONDARY BATTERY WITH IMPROVED SAFETY - The present invention provides a cathode comprising two or more lithium-containing metal composite oxides, having different potentials versus lithium (Li/Li+) and different impedances, the cathode comprising: (a) a first lithium-containing metal composite oxide; and (b) a second lithium-containing metal composite oxide, which has a high impedance and low potential versus lithium (Li/Li+), compared to those of the first lithium-containing metal composite oxide. In the invention, two or more lithium-containing metal composite oxides are used in combination as cathode components in a battery, whereby, when a short circuit occurs in the battery, the instantaneous flow of a large amount of current can be minimized and, at the same time, the accumulation of heat in the battery can be reduced, thus ensuring the safety of the battery.05-06-2010
20120196185POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention relates to a positive electrode active substance for non-aqueous electrolyte secondary batteries which comprises particles comprising a polyanionic compound and carbon, and a lipophilic treatment agent with which the respective particles are coated, wherein the positive electrode active substance has an average particle diameter of 1 to 50 μm. The positive electrode active substance preferably has an oil absorption of not more than 20 mL/100 g. The positive electrode active substance according to the present invention exhibits a good compatibility with a resin and is excellent in packing property and dispersibility in the resin, and therefore can provide an electrode sheet in which the positive electrode active substance is filled with a high packing density.08-02-2012
20090325073MATERIAL FOR CONTACT COMPONENTS OR BATTERY COMPONENTS, AND BATTERY USING THE SAME - A material for contact components or battery components, which includes a metal sheet having a surface layer portion containing a first metal element, the metal sheet including a Cr-containing steel plate or a surface-treated steel plate, and at least a part of the first metal element on an outermost surface of the surface layer portion being substituted by a second metal element having a nobler standard electrode potential than the first metal element, the second metal element being deposited on the outermost surface in a state of a particulate metal, oxide, or hydroxide.12-31-2009
20090111024Lithium transition-metal phosphate powder for rechargeable batteries - Methods of manufacture and use of phosphates of transition metals are described as positive electrodes for secondary lithium batteries, including a process for the production of LiMPO04-30-2009
20100310934POSITIVE ACTIVE MATERIAL AND POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE POSITIVE ELECTRODE - A positive electrode for a rechargeable lithium battery includes a first positive active material represented by Li12-09-2010
20100310935CATHODE MATERIALS FOR SECONDARY (RECHARGEABLE) LITHIUM BATTERIES - The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine, a modified olivine, or the rhombohedral NASICON structure and the polyanion (PO12-09-2010
20110111298COATED POSITIVE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES - High specific capacity lithium rich lithium metal oxide materials are coated with inorganic compositions, such as metal fluorides, to improve the performance of the materials as a positive electrode active material. The resulting coated material can exhibit an increased specific capacity, and the material can also exhibit improved cycling. The materials can be formed while maintaining a desired relatively high average voltage such that the materials are suitable for the formation of commercial batteries. Suitable processes are described for the synthesis of the desired coated compositions that can be adapted for commercial production.05-12-2011
20110244330ELECTRODE CONFIGURATION FOR BATTERIES - An electrode for an electrochemical cell including a polymer substrate, a conductive material in contact with the polymer substrate, a conductive ink in contact with the conductive material, and an active electrode material in contact with the conductive ink. The conductive ink is configured to enhance the adhesion between the conductive material and the active electrode material.10-06-2011
20110129733NEGATIVE ELECTRODE FOR LITHIUM BATTERY AND LITHIUM BATTERY INCLUDING NEGATIVE ELECTRODE - A negative electrode for a lithium battery and a lithium battery including the negative electrode, the negative electrode including: a matrix of a Sn grain and a metal M grain; and a carbon-based material grown on the matrix.06-02-2011
20090311602ELECTRODE FOR LITHIUM BATTERIES AND METHOD OF MANUFACTURING ELECTRODE FOR LITHIUM BATTERIES - To accelerate a film formation rate in forming a negative electrode active material film by vapor deposition using an evaporation source containing Si as a principal component, and to provide an electrode for lithium batteries which is superior in productivity, and keeps the charge and discharge capacity at high level are contemplated. The method of manufacturing an electrode for lithium batteries of the present invention includes the steps of: providing an evaporation source containing Si and Fe to give a molar ratio of Fe/(Si+Fe) being no less than 0.0005 and no greater than 0.15; and vapor deposition by melting the evaporation source and permitting evaporation to allow for vapor deposition on a collector directly or through an underlying layer. The electrode for lithium batteries of the present invention includes a collector, and a negative electrode active material film which includes SiFe12-17-2009
20100035155CATHODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD OF THE SAME - In a non-aqueous electrolyte secondary battery, in order to adjust a cathode active material in which guest cation such as Na and Li is included, alkaline metal fluoride which is expressed by a general formula AF and transition metal fluoride which is expressed by a formula M′ F02-11-2010
20110081577LITHIUM SECONDARY CELL WITH HIGH CHARGE AND DISCHARGE RATE CAPABILITY - A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4 C, the negative electrode potential is above the potential of metallic lithium.04-07-2011
20110151327ELECTRODE ACTIVE MATERIAL, ELECTRODE, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides an electrode active material, an electrode and a nonaqueous electrolyte secondary battery. The electrode active material comprises a mixture of 10 parts by weight to 900 parts by weight of a first lithium mixed metal oxide and 100 parts by weight of a second lithium mixed metal oxide, wherein06-23-2011
20120148920POSITIVE ACTIVE MATERIAL FOR LITHIUM BATTERIES AND LITHIUM BATTERY INCLUDING THE SAME - A positive active material for lithium batteries, the positive active material comprising a lithium-nickel-iron oxide, and a lithium battery including the positive active material. The lithium-nickel-iron oxide is represented by Formula 1: Li06-14-2012
20120034526LITHIUM ION SECONDARY BATTERY AND BATTERY SYSTEM - This lithium ion secondary battery includes a cathode (02-09-2012
20100310936CATHODE ACTIVE MATERIAL, CATHODE AND NONAQUEOUS SECONDARY BATTERY - The present invention allows production of a battery which not only excels in terms of safety and cost, but also has a long life. A cathode active material of the present invention is represented by the following General Formula (1):12-09-2010
20100112443Lithium Secondary Batteries with Positive Electrode Compositions and Their Methods of Manufacturing - Positive electrodes for secondary batteries formed with a plurality of substantially aligned flakes within a coating. The flakes can be formed from metal oxide materials and have a number average longest dimension of greater than 60 μm. A variety of metal oxide or metal phosphate materials may be selected such as a group consisting of LiCoO05-06-2010
20090023066NEGATIVE ELECTRODE ACTIVE MATERIAL FOR CHARGING DEVICE - To present a carbon material which provides an electrical storage device not only ensuring a high energy density but also realizing a high output and an excellent low temperature performance.01-22-2009
20080248390Non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery includes: a positive electrode comprising a positive electrode active material capable of intercalating and deintercalating lithium ions; a negative electrode; and a non-aqueous electrolyte. The positive electrode active material contains Li10-09-2008
20110052988MIXED METAL OLIVINE ELECTRODE MATERIALS FOR LITHIUM ION BATTERIES HAVING IMPROVED SPECIFIC CAPACITY AND ENERGY DENSITY - Improved positive electrode material and methods for making the same are described. Lithium-iron-manganese phosphate materials, doped with one or more dopant Co, Ni, V, and Nb, and methods for making the same are described. The improved positive electrode material of the present invention is capable of exhibiting improved energy density and/or specific capacity for use in wide range of applications. In certain embodiments, energy density of greater than 340 mWh/g is possible.03-03-2011
20110052987BATTERY SEPARATOR AND NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolyte battery of the present invention includes a positive electrode having a positive active material capable of intercalating and deintercalating a lithium ion, a negative electrode having a negative active material capable of intercalating and deintercalating a lithium ion, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The heat generation starting temperature of the positive electrode is 180° C. or higher. The separator includes heat-resistant fine particles and a thermoplastic resin. The proportion of particles with a particle size of 0.2 μm or less in the heat-resistant fine particles is 10 vol % or less and the proportion of particles with a particle size of 2 μm or more in the heat-resistant fine particles is 10 vol % or less. The separator effects a shutdown in the range of 100° C. to 150° C.03-03-2011
20110052989LITHIUM DOPED CATHODE MATERIAL - Lithium dopant is introduced into lithium rich high capacity positive electrode active materials as a substitution for manganese within the complex metal oxides. In some embodiments, the lithium doped compositions can be written in a two component notation as x.Li03-03-2011
20100330428METHOD OF MAKING TIN-BASED ALLOYS FOR NEGATIVE ELECTRODE COMPOSITIONS - Powder milling techniques, tin-based alloys formed thereby, and the use of such alloys as electrode compositions for lithium ion batteries are provided. The alloys include tin and at least one transition metal but contain no silicon. The powder milling is done using low energy roller milling (pebble milling).12-30-2010
20100028776CATHODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING THE SAME - Disclosed are a cathode active material and a secondary battery including the same. Herein, the cathode active material includes (a) a first lithium-containing metal composite oxide and (b) a second lithium-containing metal composite oxide coated on an entire particle surface of the first lithium-containing metal composite oxide, the second lithium-containing metal composite oxide having a higher resistance and a lower potential vs. lithium potential (Li/Li″ 1) than the first lithium-containing metal composite oxide. In the disclosed cathode active material, an entire surface of a first lithium-containing metal composite oxide is coated with a second lithium-containing metal composite oxide having a high resistance value and a low potential vs. lithium potential. Therefore, during an internal short of a secondary battery, it is possible to slow down the moving rate of a large amount of lithium ions and electrons from an anode to a cathode, and thus to prevent heat generation caused by the occurrence of temporary over-current. Also, it is possible to increase the temperature where a cathode active material is decomposed and gas is generated, and to improve thermal stability by inhibiting side reactions of the cathode active material and electrolyte.02-04-2010
20100183924ELECTRODE-ACTIVE ANION-DEFICIENT NON-STOICHIOMETRIC LITHIUM IRON PHOSPHATE, METHOD FOR PREPARING THE SAME, AND ELECTROCHEMICAL DEVICE USING THE SAME - The invention provides an anion-deficient non-stoichiometric lithium iron phosphate as an electrode-active material, which is represented by the formula Li07-22-2010
20100178562CARBON COATED LITHIUM MANGANESE PHOSPHATE CATHODE MATERIAL - The present invention concerns a carbon coated lithium metal phosphate material containing a manganese oxide layer between the LiMnPO4 material or the C/LiMn07-15-2010
20110070496COMPOSITION AND ENERGY STORAGE DEVICE - In accordance with one aspect of the present invention, a cathode composition is provided that includes at least one transition metal or a transition metal salt, wherein the transition metal is at least one selected from the group consisting of nickel, iron, cobalt, chromium, manganese, molybdenum, and antimony; an alkali metal halide; a salt comprising an alkali metal halide and a metal halide; and a metal polysulfide compound MS03-24-2011
20110070495METHOD OF FABRICATING ELECTRODES INCLUDING HIGH-CAPACITY, BINDER-FREE ANODES FOR LITHIUM-ION BATTERIES - An electrode (03-24-2011
20090253039LITHIUM-TRANSITION METAL COMPLEX COMPOUNDS HAVING Nth ORDER HIERARCHICAL STRUCTURE, METHOD OF PREPARING THE SAME AND LITHIUM BATTERY COMPRISING AN ELECTRODE COMPRISING THE SAME - A lithium-transition metal complex compound has an n10-08-2009
20110065002Positive Electrode Active Material for Lithium Ion Battery, Positive Electrode for Secondary Battery using said Positive Electrode Active Material, and Lithium Ion Secondary Battery using Secondary Battery Positive Electrode - Provided is a positive electrode active material for a lithium ion battery, wherein the oil absorption of NMP (N-methylpyrrolidone) measured with a method that is compliant with JIS K5101-13-1 is 30 mL or more and 50 mL or less per 100 g of powder, and wherein [the positive electrode active material] is represented with Li03-17-2011
20120308893POSITIVE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An object is to provide a positive active material for nonaqueous electrolyte secondary battery, which is capable of providing a battery with excellent cycle performance. Provided are a positive active material for nonaqueous electrolyte secondary battery, which includes an Fe-containing lithium vanadium phosphate compound having a NASICON-type structure, wherein in the Fe-containing lithium vanadium phosphate compound, the percentage of iron atoms relative to the sum of vanadium and iron atoms is 2% or more and 20% or less; and the like.12-06-2012
20120308892HIGH-POWER LITHIUM-ION STORAGE BATTERY - A Lithium-ion storage battery includes: LiFePO12-06-2012
20120003539METHOD FOR MANUFACTURING ULTRA SMALL PARTICLE, POSITIVE ELECTRODE ACTIVE MATERIAL OF SECOND BATTERY USING THE METHOD FOR MANUFACTURING ULTRA SMALL PARTICLE AND METHOD FOR MANUFACTURING THE SAME, AND SECONDARY BATTERY USING THE POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING THE SAME - An object is to form a positive electrode active material having small and highly uniform particles by a simple process. A template is formed by forming holes in the template by a nanoimprinting method, and the template is filled with a gel-like LiFePO01-05-2012
20120015249LITHIUM PHOSPHORUS COMPLEX OXIDE-CARBON COMPOSITE, METHOD FOR PRODUCING SAME, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - A lithium phosphorus complex oxide-carbon composite which has high electrode density and is capable of improving the rate characteristics of a lithium secondary battery. Specifically disclosed is a lithium phosphorus complex oxide-carbon composite which is characterized by being an aggregate of lithium phosphorus complex oxide particles represented by general formula (1), the lithium phosphorus complex oxide particles aggregating via a conductive carbon material. The lithium phosphorus complex oxide-carbon composite is also characterized in that the aggregate has an average particle diameter of 1-30 μm and a tap density of not less than 0.8 g/cm01-19-2012
20120058396OXIDATION-RESISTANT METAL SUPPORTED RECHARGEABLE OXIDE-ION BATTERY CELLS AND METHODS TO PRODUCE THE SAME - The invention describes the application of oxidation-resistant metal (preferably, stainless steel) 03-08-2012
20120064409Graphene-enhanced anode particulates for lithium ion batteries - A nano graphene-enhanced particulate for use as a lithium-ion battery anode active material, wherein the particulate is formed of a single sheet of graphene or a plurality of graphene sheets and a plurality of fine anode active material particles with a size smaller than 10 μm. The graphene sheets and the particles are mutually bonded or agglomerated into the particulate with at least a graphene sheet embracing the anode active material particles. The amount of graphene is at least 0.01% by weight and the amount of the anode active material is at least 0.1% by weight, all based on the total weight of the particulate. A lithium-ion battery having an anode containing these graphene-enhanced particulates exhibits a stable charge and discharge cycling response, a high specific capacity per unit mass, a high first-cycle efficiency, a high capacity per electrode volume, and a long cycle life.03-15-2012
20120070742LITHIUM SECONDARY BATTERY WITH HIGH ENERGY DENSITY - The present invention relates to electrodes for a lithium secondary battery with a high energy density and a secondary battery with a high energy density using the same. A negative electrode includes a material which can be alloyed with lithium alloy. A positive electrode is made of a transition metal oxide which can reversibly intercalate or deintercalate lithium. Here, the entire reversible lithium storage capacity of the positive electrode is greater than the capacity of lithium dischargeable from the positive electrode.03-22-2012
20120156565POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD OF MANUFACTURING THE POSITIVE ELECTRODE ACTIVE MATERIAL, AND LITHIUM BATTERY EMPLOYING THE POSITIVE ELECTRODE ACTIVE MATERIAL - In one aspect, a positive electrode active material is provided, a method of manufacturing the positive electrode active material, and a lithium battery employing the positive electrode active material. The positive electrode active material may have high thermal stability and low capacity deterioration despite repetitive charging and discharging.06-21-2012
20120107691POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME - A positive active material for a lithium secondary battery comprises a core comprising a compound that can reversibly intercalate and deintercalate lithium; and a compound attached to the surface of the core and represented by Chemical Formula 1:05-03-2012
20110091772PROCESS FOR PRODUCING LITHIUM IRON PHOSPHATE PARTICLES, LITHIUM IRON PHOSPHATE PARTICLES HAVING OLIVINE TYPE STRUCTURE, AND POSITIVE ELECTRODE SHEET AND NON-AQUEOUS SOLVENT-BASED SECONDARY BATTERY USING THE LITHIUM IRON PHOSPHATE PARTICLES - The present invention relates to a process for producing lithium iron phosphate particles having an olivine type structure, comprising a first step of mixing an iron oxide or an iron oxide hydroxide as an iron raw material which comprises at least one element selected from the group consisting of Na, Mg, Al, Si, Cr, Mn and Ni in an amount of 0.1 to 2 mol % for each element based on Fe, and a carbon element C in an amount of 5 to 10 mol % based on Fe, and has a content of Fe04-21-2011
20110104570CATHODE COMPOSITIONS COMPRISING ZN AND CHALCOGENIDE AND ENERGY STORAGE CELL COMPRISING SAME - A cathode composition and a rechargeable electrochemical cell comprising same are disclosed. The cathode composition is described as comprising (i) particles including a transition metal selected from the group consisting of Ni, Fe, Cr, Mn, Co, V, and combinations thereof; (ii) alkali halometallate; (iii) alkali halide; (iv) source of Zn; and (v) source of chalcogenide. Also described is a rechargeable electrochemical cell comprising the composition. The source of Zn and source of chalcogenide in the cathode composition of a cell may be effective to improve the extractable capacity of cells, and decrease the cell resistance, relative to their absence.05-05-2011
20120164534GRAPHENE/LiFePO4 CATHODE WITH ENHANCED STABILITY - A lithium ion battery having an anode, an electrolyte, and a cathode comprising nano-structured carbon in electrical communication with LiFePO06-28-2012
20100248032LITHIUM MIXED METAL OXIDE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A lithium mixed metal oxide comprising Ni, Mn and Fe and having a BET specific surface area of 2 m09-30-2010
20120214067NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A negative electrode active material for a lithium ion secondary battery contains a lithium titanium complex oxide having a composition expressed as Li08-23-2012
20120129051POSITIVE ELECTRODE AND LITHIUM BATTERY UTILIZING THE SAME - Disclosed is a positive electrode applied in lithium battery and method for manufacturing the same. First, a lithium alloy oxide layer is formed on a substrate. Subsequently, an additional high density and low energy plasma treatment is processed, such that the lithium alloy oxide layer has a top surface composed of uniform, dense, and inter-necked nano grains, and the in-side/bottom grains of the oxide layer remain unchanged. According to experiments, the positive electrode with such properties has higher capacity and longer cycle lifetime, thereby improving the lithium battery performance.05-24-2012
20100047691LITHIUM SECONDARY BATTERY - The present invention provides a lithium secondary battery having a positive electrode, a negative electrode, and a solid electrolyte and characterized in that the positive electrode contains positive electrode active material particles made of particles of a material capable of doping/dedoping lithium ion and an element M-containing compound (herein, the element M-containing compound is a compound containing one or more elements selected from B, Al, Mg, Co, Cr, Mn, and Fe as the element M) disposed on the surfaces of the particles as particles or in a layered state.02-25-2010
20100273054ELECTRODES AND ELECTRODE MATERIAL FOR LITHIUM ELECTROCHEMICAL CELLS - An electrode and an electrode material for lithium electrochemical cells are disclosed. The electrode material is in powder form and has a particle size distribution wherein the measured particle size distribution of the electrode material has a median size D10-28-2010
20100273053Electrochemical Cell - An electrochemical cell comprising a cathode, an anode and an electrolyte is provided, wherein:10-28-2010
20120258362ELECTRODE ACTIVE MATERIAL, METHOD OF PREPARING ELECTRODE ACTIVE MATERIAL, ELECTRODE INCLUDING ELECTRODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING ELECTRODE - An electrode active material, a method of preparing the electrode active material, an electrode including the electrode active material, and a lithium secondary battery including the electrode; the electrode active material comprising a core active material; and a coating layer formed on a surface of the core active material, wherein the coating layer comprises a composition including a compound represented by Formula 1 below and a carbonaceous material, or a first coating layer including a carbonaceous material and a second coating layer including the compound represented by Formula 1 below:10-11-2012
20110123866Methods and systems for making electrodes having at least one functional gradient therein and devices resulting therefrom - The invention disclosed herein provides for methods and apparatuses that yield electrodes having at least one functional gradient therein. In many embodiments, the electrodes comprise an electrode matrix having a plurality of layers, where at least two of the layers differs functionally, in composition, structure, or, organization. High-throughput electrode screening apparatuses are disclosed that include array formers and testers. Electrodes and battery cells arising from the methods and apparatuses disclosed herein are likewise disclosed. The methods, apparatuses, and resulting electrode and cell devices are, in some embodiments, ideally suited for use in lithium-ion batteries.05-26-2011
20120231340TRANSITION-METAL-CONTAINING HYDROXIDE AND LITHIUM-CONTAINING METAL OXIDE - The present invention provides a transition metal mixed hydroxide and a lithium mixed metal oxide. The transition metal mixed hydroxide consists of primary particles and approximately spherical secondary particles formed by aggregation of primary particles, and has an average particle diameter of from 1 μm to 20 μm and contains Mn, Ni, Fe and Co in a molar ratio of a:b:c:d, wherein a is from 0.3 to 0.7, b is from 0.4 to 0.7, c is more than 0 and not more than 0.1, d is from 0 to 0.2, and a+b+c+d=1. The lithium mixed metal oxide is produced by calcining a mixture of the transition metal mixed hydroxide and a lithium compound, and has an average particle diameter of from 1 μm to 20 μm.09-13-2012
20120231339NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed are a negative active material for a rechargeable lithium battery including lithium silicide having a I41-a crystalline phase structure, a method of manufacturing the same, and a rechargeable lithium battery including the same.09-13-2012
20120264019ELECTRODE ACTIVE MATERIAL, ELECTRODE, AND SODIUM SECONDARY BATTERY - The present invention provides an electrode active material, an electrode and a sodium secondary battery. The electrode active material contains the following powder (A) and powder (B): 10-18-2012
20120321957CONDUCTOR HAVING A PERMEATION REGION - Conductor for an electrode of an electrochemical energy storage means, in particular of, essentially, prismatic shape, with a passage region through which electrons may enter into the conductor or through which electrons may exit from the conductor.12-20-2012
20110236757POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME - A power storage device with favorable battery characteristics and a manufacturing method thereof are provided. The power storage device includes at least a positive electrode and a negative electrode provided so as to face the positive electrode with an electrolyte provided therebetween. The positive electrode includes a collector and a film containing an active material over the collector. The film containing the active material contains Li09-29-2011
20100233541METHOD OF MANUFACTURING ACTIVE MATERIAL, ACTIVE MATERIAL, ELECTRODE USING THE SAME, AND LITHIUM-ION SECONDARY BATTERY EQUIPPED THEREWITH - A method of manufacturing an active material having a sufficient discharge capacity at a high discharge current density, an active material obtained thereby, an electrode using the same, and a lithium-ion secondary battery equipped therewith are provided. The method of manufacturing an active material comprises a step of polymerizing a mixture containing an Fe ion, an Li ion, a PO09-16-2010
20120321958FERROUS PHOSPHATE (II) POWDERS, LITHIUM IRON PHOSPHATE POWDERS FOR LI-ION BATTERY, AND METHODS FOR MANUFACTURING THE SAME - Ferrous phosphate (II) (Fe12-20-2012
20120328947LiFePO4 FLAKES FOR Li-ION BATTERY AND METHOD FOR MANUFACTURING THE SAME12-27-2012
20120288764NOVEL POSITIVE ELECTRODE FOR SECONDARY BATTERY - Disclosed herein are a cathode for a secondary battery, which includes a combination of one or more selected from compounds represented by Formula 1 and or more selected from compounds represented by Formula 2, as illustrated below, and a secondary battery having the same,11-15-2012
20120288763CATHODE ACTIVE MATERIAL, CATHODE ELECTRODE, AND NON-AQUEOUS SECONDARY BATTERY - A cathode active material comprising a composition represented by the following general formula (1):11-15-2012
20120288765CATHODE OF LITHIUM BATTERY AND METHOD FOR FABRICATING THE SAME - A cathode of the lithium battery includes a composite film. The composite film includes a carbon nanotube film structure and a plurality of active material particles dispersed in the carbon nanotube film structure.11-15-2012
20120100430CATHODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING THE SAME - Disclosed are a cathode active material and a secondary battery including the same, wherein the cathode active material includes (a) a first lithium-containing metal composite oxide and (b) a second lithium-containing metal composite oxide coated on an entire particle surface of the first lithium-containing metal composite oxide particle, the second lithium-containing metal composite oxide having a higher resistance and a lower potential vs. lithium potential (Li/Li+) than the first lithium-containing metal composite oxide.04-26-2012
20120100429POSITIVE ELECTRODE ACTIVE MATERIAL, PRODUCTION METHOD THEREOF AND ITS USE - A method of producing a positive electrode active material, comprising the steps of: 04-26-2012
20130011739PROCESS FOR PREPARING ELECTROACTIVE INSERTION COMPOUNDS AND ELECTRODE MATERIALS OBTAINED THEREFROM - A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.01-10-2013
20130011738CATHODE MATERIAL OF LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A cathode material of a lithium ion secondary battery is provided, which includes a cathode active material and a glassy material coating on a surface of the cathode active material. The glassy material is capable of selectively allowing lithium ions to pass therethrough. The lithium ion secondary battery using the cathode material has the long cycle life and the high safety performance.01-10-2013
20130017447Positive Electrode Material - An electrode material comprising a Li01-17-2013
20130171523LITHIUM-ION SECONDARY BATTERY AND THE CATHODE MATERIAL THEREOF - The present invention relates to the field of lithium-ion battery, and particularly to high-capacity cathode material, and high-energy density lithium-ion secondary battery prepared using the same. The cathode material comprises cathode active material, a binder and a conductive agent, in which the cathode active material is a compound material of lithium cobalt oxide-based active material A and nickel-based active material B pretreated before being mixed, and the mass ratio B/A of the lithium cobalt oxide-based active material A and nickel-based active material B is between 0.82 and 9. The present invention can produce a battery having both larger capacity and higher energy density, and address the problem of gas generation in the battery at high temperature.07-04-2013
20130171524POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the positive active material. The positive active material includes a lithiated intercalation compound capable of reversibly intercalating and deintercalating lithium and a metal oxide represented by the following Chemical Formula 1.07-04-2013
20080254365NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Negative active materials for rechargeable lithium batteries, manufacturing methods thereof, and rechargeable lithium batteries including the negative active materials are provided. The negative active material includes a compound represented by the Formula Li10-16-2008
20130143122CARBON-TREATED CATHODE MATERIAL USABLE FOR BATTERIES AND METHOD OF MAKING SAME - A method for preparing a cathode material is provided, which includes: providing particles of a cathode material; coating a carbon layer onto the particles of the cathode material, in which the carbon layer is formed of a carbon-containing compound; and mixing the carbon-containing compound with the particles at a temperature equal to or lower than 0° C. According to the method, the lithium ferrous phosphate powder does not agglomerate in the carbon coating process, and the carbon-coated particles have slightly increased volumes so that the nano-lithium ferrous phosphate material maintains its nano size after being coated with carbon.06-06-2013
20130143123MESOPOROUS METAL PHOSPHATE MATERIALS FOR ENERGY STORAGE APPLICATION - Mesoporous particles each including LiFePO06-06-2013
20110269022POSITIVE ELECTRODE ACTIVE MATERIAL OF POWER STORAGE DEVICE, POWER STORAGE DEVICE, ELECTRICALLY PROPELLED VEHICLE, AND METHOD FOR MANUFACTURING POWER STORAGE DEVICE - An object is to improve the characteristics of a power storage device such as a charging and discharging rate or a charge and discharge capacity. The grain size of particles of a positive electrode active material is nano-sized so that a surface area per unit mass of the active material is increased. Specifically, the grain size is set to greater than or equal to 10 nm and less than or equal to 100 nm, preferably greater than or equal to 20 nm and less than or equal to 60 nm. Alternatively, the surface area per unit mass is set to 10 m11-03-2011
20130095385CARBON-CONTAINING COMPOSITE MATERIAL CONTAINING AN OXYGEN-CONTAINING LITHIUM TRANSITION METAL COMPOUND - The present invention relates to a carbon-containing composite material of particles of an oxygen-containing lithium transition metal compound which are coated with essentially two carbon-containing layers, a method for its production as well as an electrode containing the composite material.04-18-2013
20130115514POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY - Provided is a positive electrode active material giving nonaqueous-electrolyte secondary batteries superior in cycle characteristics. The positive electrode active material according to the present invention includes a lithium-containing composite metal oxide having the composition represented by the following General Formula (1):05-09-2013
20130122372Spinel-Type Lithium Transition Metal Oxide and Positive Electrode Active Material for Lithium Battery - Provided is spinel-type lithium transition metal oxide (LMO) used as a positive electrode active material for lithium battery, said LMO being capable of simultaneously achieving all output characteristics (rate characteristics), high temperature cycle life characteristics, and rapid charging characteristics. The disclosed is spinel-type lithium transition metal oxide including, besides Li and Mn, one or more elements selected from a group consisting of Mg, Ti, Ni, Co, and Fe, and having crystallite size of between 200 nm and 1000 nm and strain of 0.0900 or less. Because the crystallite size is markedly large, oxygen deficiency is markedly little, and the structure is strong, when the LMO is used as a positive electrode active material for lithium secondary batteries, all output characteristics (rate characteristics), high temperature cycle life characteristics, and rapid charging characteristics can be achieved simultaneously.05-16-2013
20130130111Hydrothermal Process for the Production of LiFePO4 Powder - The present invention relates to a process for the production of LiFePO05-23-2013
20130157135LITHIUM SALT-GRAPHENE-CONTAINING COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF - A lithium salt-graphene-containing composite material and its preparation method are provided. The composite material has the microstructure which comprises carbon nanoparticles, lithium salt nanocrystals and graphene, wherein the surface of lithium salt nanocrystals is coated with carbon nanoparticles and graphene. The preparation method comprises concentrating and drying a mixed solution, then calcinating the solid. The lithium salt-graphene-containing composite material has excellent electric performance and stability since the problem of low electric performance resulted from carbon coating on the surface of lithium salt or coating imperfection resulted from graphene coating on the surface of lithium salt is effectively solved. For the more uniform and compacted combination between graphene and lithium salt nanocrystals, the graphene will not fall off and the composite material has a high capacity ratio, energy density and conductivity. Furthermore, particle agglomeration and growing up are reduced in the process of calcination.06-20-2013
20110212365Carbon-Coated Li-Containing Powders and Process for Production Thereof - The invention provides a new route for the synthesis of carbon-coated powders having the olivine or NASICON structure, which form promising classes of active products for the manufacture of rechargeable lithium batteries. Carbon-coating of the powder particles is necessary to achieve good performances because of the rather poor electronic conductivity of said structures. For the preparation of coated LiFePO09-01-2011
20110223482POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY - An object of the present invention is to provide a positive electrode for a lithium secondary battery, which is capable of improving the initial coulomb efficiency of a lithium secondary battery, and the like. A positive electrode for a lithium secondary battery, which comprises lithium manganese iron phosphate and a lithium-nickel-manganese-cobalt composite oxide, is provided.09-15-2011
20090068560Non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery has a negative electrode, a non-aqueous electrolyte, and a positive electrode containing a positive electrode active material composed of an olivine lithium-containing metal phosphate represented by the general formula Li03-12-2009
20130149607ELECTROCHEMICAL COMPOSITION AND ASSOCIATED TECHNOLOGY - A composition including a first material and a metal or a metal oxide component for use in an electrochemical redox reaction is described. The first material is represented by a general formula M06-13-2013
20120258363POSITIVE-ELECTRODE MATERIAL FOR A LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD OF THE SAME - Provided is a positive electrode material for a safe, high capacity, long lifetime lithium ion secondary battery capable of large current charging and discharging. The positive electrode material contains between 5% by mass or more and 30% by mass or less of a carbon black composite formed by joining together fibrous carbon and carbon black wherein ash is 1.0% or less by mass in accordance with JIS K 1469 and the remainder includes olivine-type lithium iron phosphate, and volatile oxygen-containing functional groups which constitutes 1.0% or less by mass of the positive electrode material. The fibrous carbon is preferably a nanotube having a fiber diameter of 5 nm or more and 50 nm or less and a specific surface area between 50 m10-11-2012
20110274975POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - It is an object of the present invention to provide a positive electrode material having a large ratio of the discharge capacity around 4 V to the total discharge capacity including the discharge capacity at 4V or lower while making the discharge capacity around 4 V sufficient, for the purpose of providing a lithium secondary battery using a lithium transition metal phosphate compound excellent in thermal stability, utilizing the discharge potential around 4V (vs. Li/Li11-10-2011
20100316909CATHODE MATERIALS FOR SECONDARY (RECHARGEABLE) LITHIUM BATTERIES - The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine, a modified olivine, or the rhombohedral NASICON structure and the polyanion (PO12-16-2010
20130157133Process for Producing Defect-Free Lithium Metal Phosphate Electrode Materials - A method of synthesizing defect-free phospho-olivine materials is disclosed. The method is based on direct hydrothermal synthesis of phospho-olivine compound(s) and subsequent lattice reordering at or near the transition temperature to eliminate lattice defects or on one-pot in situ hydrothermal synthesis of phospho-olivine compound(s), where the cation ordering occurs during dwell time after rapid synthesis to eliminate lattice defects. The disclosed methods produce defect-free phospho-olivine compound(s) having a crystal lattice with a Pnma space group. In order to determine the exact transition temperature for complete removal of single- or mixed-transition metals from lithium sites or to monitor the crystal growth and removal of single- or mixed-transition metals from lithium sites during the hydrothermal synthesis, the method encompasses a procedure for determining and monitoring defects in the phospho-olivine phases using X-ray diffraction.06-20-2013
20130157134METHOD OF PRODUCING IRON PHOSPHATE, LITHIUM IRON PHOSPHATE, ELECTRODE ACTIVE SUBSTANCE, AND SECONDARY BATTERY - A mixed aqueous solution is prepared in which a phosphorus source, a divalent Fe compound, and an oxidant are mixed at a predetermined ratio. Then, this mixed aqueous solution is dropwise added into a buffer solution having a pH value of 1.5 to 9, thereby to produce a precipitated powder of FePO06-20-2013
20110281166ELECTRODE COMPOSITION, ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE ELECTRODE - An electrode composition containing a first conducting agent and a second conducting agent, an electrode for lithium secondary batteries, a method of manufacturing the electrode, and a lithium secondary battery including the electrode. The second conducting agent is an agglomerate formed of a conducting material and a fluorine-based polymer.11-17-2011
20130122373LITHIUM ION SECONDARY BATTERY - Provided is a lithium ion secondary battery which is low in capacity drop of the battery during fast-charge and has high energy density. In the present lithium ion secondary battery, the positive electrode contains a lithium nickel manganese oxide represented by formula (I):05-16-2013
20110305953Positive active material for rechargeable lithium battery, method of preparing same, and rechargeable lithium battery including same - A positive active material for a rechargeable lithium battery including a lithium metal oxide represented by the following Chemical Formula 1, a method of preparing the same, and a rechargeable lithium battery including the same.12-15-2011
20130189579Material Engineering for High Performance Li-ion Battery Electrodes - A method of treating an electrode for a battery to enhance its performance is disclosed. By depositing a layer of porous carbon onto the electrode, its charging and discharging characteristics, as well as chemical stability may be improved. The method includes creating a plasma that includes carbon and attracting the plasma toward the electrode, such as by biasing a platen on which the electrode is disposed. In some embodiments, an etching process is also performed on the deposited porous carbon to increase its surface area. The electrode may also be exposed to a hydrophilic treatment to improve its interaction with the electrolyte. In addition, a battery which includes at least one electrode treated according to this process is disclosed.07-25-2013
20130189580STRONGLY COUPLED INORGANIC-GRAPHENE HYBRID MATERIALS, APPARATUSES, SYSTEMS AND METHODS - Nanocarbon-based materials are provided in connection with various devices and methods of manufacturing. As consistent with one or more embodiments, an apparatus includes a nanocarbon structure having inorganic particles covalently bonded thereto. The resulting hybrid structure functions as a circuit node such as an electrode terminal. In various embodiments, the hybrid structure includes two or more electrodes, at least one of which including the nanocarbon structure with inorganic particles covalently bonded thereto.07-25-2013
20120003540METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY, ELECTRODE FOR LITHIUM ION BATTERY, AND LITHIUM ION BATTERY - A method of manufacturing a positive electrode active material for lithium ion batteries, comprising: preparing a mixture containing (A) Li01-05-2012
20120003538POSITIVE ELECTRODE ACTIVE MATERIAL OF POWER STORAGE DEVICE, POSITIVE ELECTRODE OF POWER STORAGE DEVICE, POWER STORAGE DEVICE, MANUFACTURING METHOD OF POSITIVE ELECTRODE ACTIVE MATERIAL OF POWER STORAGE DEVICE - As a positive electrode active material, a material which is represented by the general formula Li01-05-2012
20120021291Method for Producing a Carbon Composite Material - The invention discloses a method for producing a carbon composite material, which includes the step of providing at least one carbon nanostructured composite material onto the surface of LiFePO4 particles to produce a LiFePO4/carbon nanostructured composite material. The carbon nanostructured composite material is obtained by synthesizing at least one nanostructured composite material to form the carbon nanostructured composite material.01-26-2012
20120021290ELECTRIC POWER STORAGE SYSTEM - An electric power storage system, having application in energy systems, is primarily assembled from an electric power storage device and an electric power management system. In which, the electric power storage device is assembled from a first electric storage unit, a second electric storage unit and a super capacitance. Characteristics of the super capacitance are used to effect an electrical connection between the first electric storage unit and the second electric storage unit. The electric power management system is then used to implement management of energy resources. The present invention primarily uses the battery characteristics of lead acid batteries and lithium batteries (or lithium iron batteries) and management by the electric power management system to increase endurance and electric storage capacity the battery storage devices. The present invention further uses the characteristics of the super capacitance to enable the electric power storage system to implement momentary charging and discharging.01-26-2012
20120028122POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY - The positive active material is a positive active material for a lithium secondary battery, including a lithium transition metal compound that has an olivine crystal structure and contains at least Ni, Fe, and Mn as transition metal elements, wherein when the sum of mole atoms of Ni, Fe, and Mn of transition metal elements contained in the lithium transition metal compound is expressed as 1, and the mole atomic ratios of Ni, Fe, and Mn are represented by a, b, and c (a+b+c=1, a>0, b>0, c>0), respectively, the following is satisfied: 0.85≦c≦0.92 and 0.3≦a/(a+b)≦0.9.02-02-2012
20120028121PROCESS FOR PREPARING ELECTROACTIVE INSERTION COMPOUNDS AND ELECTRODE MATERIALS OBTAINED THEREFROM - A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.02-02-2012
20120028120ELECTRODE COMPOSITE MATERIAL, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - A cathode composite material includes a cathode active material particle having a surface and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is layered type lithium nickel cobalt manganese oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.02-02-2012
20120028119ELECTRODE COMPOSITE MATERIAL, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - A cathode composite material includes a cathode active material particle having a surface and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is layered type lithium nickel manganese oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.02-02-2012
20130196233NEGATIVE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY INCLUDING NEGATIVE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING NEGATIVE ELECTRODE - A negative active material for a rechargeable lithium battery includes a Si—Al—Fe alloy represented by Formula 1. The Si—Al—Fe alloy includes a Si phase and an alloy phase, and the alloy phase includes Si, Al, and Fe in a ratio of atomic percentages of about 3:3:2:08-01-2013
20130095384COMPOSITE OF METAL OXIDE NANOPARTICLES AND CARBON, METHOD OF PRODUCTION THEREOF, ELECTRODE AND ELECTROCHEMICAL ELEMENT EMPLOYING SAID COMPOSITE - A composite powder in which highly dispersed metal oxide nanoparticle precursors are supported on carbon is rapidly heated under nitrogen atmosphere, crystallization of metal oxide is allowed to progress, and highly dispersed metal oxide nanoparticles are supported by carbon. The metal oxide nanoparticle precursors and carbon nanoparticles supporting said precursors are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The rapid heating treatment in said nitrogen atmosphere is desirably heating to 400° C.-1000° C. By further crushing the heated composite, its aggregation is eliminated and the dispersity of metal oxide nanoparticles is made more uniform. Examples of a metal oxide that can be used are manganese oxide, lithium iron phosphate, and lithium titanate. Carbons that can be used are carbon nanofiber and Ketjen Black.04-18-2013
20120088157ELECTRODE MATERIAL, POWER STORAGE DEVICE, AND ELECTRONIC DEVICE - To provide an electrode material with an increased capacity and a power storage device including the electrode material. Lithium iron phosphate having improved crystallinity is provided in which the lattice constant in the a-axis direction is greater than or equal to 10.3254×1004-12-2012
20120088156METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR ENERGY STORAGE DEVICE AND ENERGY STORAGE DEVICE - An energy storage device having high capacity per weight or volume and a positive electrode active material for the energy storage device are manufactured. A surface of a main material included in the positive electrode active material for the energy storage device is coated with two-dimensional carbon. The main material included in the positive electrode active material is coated with a highly conductive material which has a structure expanding two-dimensionally and whose thickness is ignorable, whereby the amount of carbon coating can be reduced and an energy storage device having capacity close to theoretical capacity can be obtained even when a conduction auxiliary agent is not used or the amount of the conduction auxiliary agent is extremely small. Accordingly, the amount of carbon coating in a positive electrode and the volume of the conduction auxiliary agent can be reduced; consequently, the volume of the positive electrode can be reduced.04-12-2012
20130209884NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A negative electrode active material for lithium ion secondary batteries of the present invention includes a lithium-titanium composite oxide that has a composition represented by Li08-15-2013

Patent applications in class Iron component is active material