Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and that is represented by the composition formula (1): LixAyMezO?F???(1) wherein A denotes Na or K, Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 1.7?x+y?2.2 0?y?0.2 0.8?z?1.3 1???2.5 0.

Abstract: Provided is a precursor of transition metal oxide represented by chemical formula 1 below.

Abstract: An optical receiver includes a transimpedance amplifier that converts a current signal corresponding to an optical signal into a voltage signal. The transimpedance amplifier includes an input terminal receiving the current signal, an output terminal outputting the voltage signal, an inverting circuit including a pull-up device that pull-up drives the voltage signal of the output terminal according to the current signal, and a pull-down device that pull-down drives the voltage signal of the output terminal according to the current signal, a feedback resistor electrically connected between the input and output terminals, a first resistor electrically connected between the input terminal and the pull-up device, and a second resistor electrically connected between the input terminal and the pull-down device.

Abstract: Provided is a method for producing the positive electrode active material for nonaqueous electrolyte secondary batteries, including a first step of mixing a Li-metal composite oxide powder which is represented by the general formula: LizNi1-x-yCoxMyO2 (where 0?x?0.35, 0?y?0.35, and 0.97?z?1.30 are satisfied, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti and Al) and constituted by primary particles and secondary particles, to an alkaline solution with a W compound dissolved therein, and immersing a resulting mixture, followed by solid-liquid separation, to obtain a W mixture with W uniformly dispersed on the surface of the primary particles of the composite oxide, and a second step of heat-treating the W mixture to thereby form a compound containing W and Li on the surface of the primary particles of the composite oxide powder.

Abstract: A positive active material for a rechargeable lithium battery includes a compound represented by Chemical Formula 1, LiaNixCoyMezM1kM2pO2 wherein, 0.9?a?1.1, 0.7?x?0.93, 0<y?0.3, 0<z?0.3, 0.001?k?0.006, 0.001?p?0.005, x+y+z+k+p=1, Me is Mn or Al, M1 is a divalent element, and M2 is a tetravalent element.

Abstract: In one aspect, a method for producing a positive electrode active material for a nonaqueous electrolyte secondary battery, includes mixing first lithium nickel composite oxide particles containing lithium tungstate and second lithium nickel composite oxide particles not containing lithium tungstate. The first lithium nickel composite oxide particles have a composition represented by Liz1Ni1-x1-y1Cox1M1y1O2, and include a core material containing secondary particles each corresponding to an aggregation of a plurality of primary particles, and the lithium tungstate existing on at least a part of a surface of the primary particles on a surface of and inside the first lithium nickel composite oxide particles. The second lithium nickel composite oxide particles have a composition represented by Liz2Ni1-x2-y2Cox2M2y2O2, and include secondary particles each corresponding to an aggregation of a plurality of primary particles.

Abstract: A cathode active material that is able to improve storage characteristics without deteriorating charging and discharging capacity is provided. By mixing lithium nickel containing composite oxide particles comprising a layered rock-salt type crystal structure, a lithium compound, and an alkali metal compound; calcining the mixed powder at a temperature range of 800° C. to 1000° C.; washing and removing alkali metal other than lithium; mixing washed calcined particles with a lithium compound again; calcining the mixture in an oxidizing atmosphere at a temperature range of 600° C. to 800° C., lithium nickel containing composite oxide comprising a layered rock-salt type crystal structure and a peak intensity ratio of (003) plane with respect to (104) plane of 1.2 or more that are obtained by X-ray powder diffraction using Cu-K? ray as an X-ray source is obtained.

Abstract: The present invention provides a precursor for the production of a positive electrode active material for a secondary battery comprising: a core composed of transition metal hydroxides including nickel(Ni) and manganese(Mn) and further including anions other than hydroxyl groups(OH), or transition metal hydroxides including nickel(Ni), manganese(Mn) and cobalt(Co) and further including anions other than hydroxyl groups(OH); and a shell composed of transition metal hydroxides including cobalt(Co) and further including anions other than hydroxyl groups(OH), and a positive electrode active material for lithium secondary battery produced using the same.

Abstract: To provide a transition metal-containing hydroxide, which is a precursor of a lithium-containing composite oxide, with which it is possible to obtain a lithium ion secondary battery excellent in the discharge capacity and cycle characteristics, by using as a cathode active material a lithium-containing composite oxide obtained from the hydroxide. A transition metal-containing hydroxide, which is a precursor of a lithium-containing composite oxide, wherein in a distribution of the logarithmic derivative pore specific surface area relative to the pore size, obtained by BJH method, the proportion of the sum of the logarithmic derivative pore specific surface areas with pore sizes of 10 nm or larger, to 100% of the sum of the logarithmic derivative pore specific surface areas in the entire distribution, is at least 23%.

Abstract: A lithium battery as a secondary battery has a battery cell including a first current collector which has a first face and a second face, a positive electrode active material particle which pierces the first current collector and is exposed from the first face and the second face, an electrolyte layer which covers the positive electrode active material particle exposed from the first face and the second face of the first current collector, a negative electrode as an electrode which is in contact with the electrolyte layer, and a second current collector which is in contact with the negative electrode. The battery cell is hermetically enclosed in a package in a state where one end portion which is a portion of the first current collector is exposed.

Abstract: Disclosed are a method for manufacturing a lithium secondary battery positive active material exhibiting a concentration gradient and a lithium secondary battery positive active material exhibiting a concentration gradient, manufactured by the method, and more particularly, a method for manufacturing a lithium secondary battery positive active material exhibiting a concentration gradient and a lithium secondary battery positive active material exhibiting a concentration gradient, manufactured by the method, the method being characterized by forming a barrier layer so as to maintain a concentration gradient layer even in case of thermal diffusion by a subsequent thermal treatment process.

Abstract: Provided is a production method for a composite active material for lithium secondary batteries which enables production of an electrode material in which volume expansion is suppressed even after repeated charging and discharging, and enables production of a lithium secondary battery exhibiting excellent cycle characteristics. A composite active material for lithium secondary batteries is produced using a mixing step of mixing graphite having a specific surface area of not less than 30 m2/g, silicon monoxide, and a carbon precursor to obtain a mixture; a conglobation step of performing conglobation treatment on the mixture and obtaining a spherical mixture; and a heating step of heat-treating the spherical mixture and producing a substantially spherical composite active material for lithium secondary batteries.

Abstract: Provided is cathode active material powder or a cathode that is capable of improving the cycle characteristics of nonaqueous electrolyte rechargeable batteries at high voltage and exhibiting excellent capacity retention. The powder has a composition of: Lix?wNawCo1?yMyO2+z (0.950?x?1.100, 0<y?0.050, ?0.1?z?0.1, 0?w?0.020; M: rare earth elements, Ti, Zr, Mo, Mn, Ni, Cu, Al, Ga, etc), and a core-shell structure composed of a lithium-containing composite oxide region as core and a Li-ion-conductive oxide region as shell. The core contains Li, Co, and oxygen, and has Co concentration of not higher than 90% as calculated by formula: ((Co concentration on shell external surface)/(Co concentration at shell boundary of core/shell structure))×100. The shell is an amorphous layer containing La, Ti, Co, and oxygen, covering the core at least partly.

Abstract: The positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an ?-NaFeO2 structure, and having a diffraction peak at 2?=44±1° and a diffraction peak at 2?=18.6±1° in a powder X-ray diffraction diagram using a CuK? ray. In a ratio FWHM (003)/FWHM (104) of a full width at half maximum FWHM (003) for the diffraction peak at 2?=18.6±1° to a full width at half maximum FWHM (104) for the diffraction peak at 2?=44±1°, a ratio of FWHM (003)/FWHM (104) in a charge state immediately after a discharge state to FWHM (003)/FWHM (104) in the discharge state is 0.72 or more.

Abstract: The present invention relates to a cathode active material for lithium secondary battery and a lithium secondary battery including the same, and more specifically it relates to a cathode active material for lithium secondary battery in which the lithium ion diffusion path in the primary particles is formed to exhibit directivity in the center direction of the particles, and a lithium secondary battery including the same. The cathode active material for lithium secondary battery of the present invention has a lithium ion diffusion path exhibiting specific directivity in the primary particles and the secondary particles, and thus not only the conduction velocity of the lithium ion is fast and the lithium ion conductivity is high but also cycle characteristics are improved as the crystal structure hardly collapses despite repeated charging and discharging.

Abstract: Provided herein is a method for preparing a surface modified cathode material for lithium-ion battery, wherein the cathode material comprises lithium multi-metal composite oxide particles capped with a thin film of an oxide of the metal, wherein the lithium multi-metal composite oxide is represented by Li1+zNixMnyCo1?x?yO2; and wherein z is from 0 to 0.2; x is from 0.35 to 0.8; y is from 0.1 to 0.45; and the metal is one or more elements selected from the group consisting of Fe, Mn, Al, Mg, Zn, Ti, La, Ce, Sn, Zr, Ru and combination thereof. The cathode material disclosed herein exhibits a high initial specific capacity from 150 mAh/g to 200 mAh/g, possesses good safety characteristics and shows impressive energy retention of about 91% after 1000 cycles.

Abstract: A negative electrode active material includes particles of negative electrode active material, wherein the particles of negative electrode active material contain particles of silicon compound containing silicon compound (SiOx:0.5?x?1.6), the particles of negative electrode active material contain crystalline Li2SiO3 in at least a part thereof, and the particles of negative electrode active material satisfy the following formula 1 and formula 2 between an intensity A of a peak derived from Li2SiO3, an intensity B of a peak derived from Si, an intensity C of a peak derived from Li2Si2O5, and an intensity D of a peak derived from SiO2, which are obtained from a 29Si-MAS-NMR spectrum. Thus a negative electrode active material capable of increasing a battery capacity, and improving the cycle characteristics and initial charge/discharge characteristics when used as a negative electrode active material of the lithium ion secondary battery is provided.

Abstract: A nonaqueous electrolyte battery includes: a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode contains, as a positive electrode active material, a positive electrode material having a surface composition represented by the following formula (I); the nonaqueous electrolyte contains a halogenated carbonate represented by any of the following formulae (1) to (2) and an alkylbenzene represented by the following formula (3); a content of the halogenated carbonate is 0.1% by mass or more and not more than 50% by mass relative to the nonaqueous electrolyte; and a content of the alkylbenzene is 0.

Abstract: Provided is a method capable of producing, in a simple and low-cost manner, an electrolysis electrode which can be used in alkaline water electrolysis and has superior durability against output variation. The method for producing an anode for alkaline water electrolysis includes: a step of dissolving lithium nitrate and a nickel carboxylate in water to prepare an aqueous solution containing lithium ions and nickel ions, a step of applying the aqueous solution to the surface of a conductive substrate having at least the surface composed of nickel or a nickel-based alloy, and a step of subjecting the conductive substrate to which the aqueous solution has been applied to a heat treatment at a temperature within a range from at least 450° C. to not more than 600° C., thereby forming a catalyst layer composed of a lithium-containing nickel oxide on the conductive substrate.

Abstract: The invention relates to a method of manufacturing a separating membrane in gel form, for an alkali metal ion battery, the method consisting of extruding a mix comprising: an alkali metal salt, a dinitrile compound with formula N?C—R—C?N, in which R is a hydrocarbon group CnH2n, and n is equal to 1 or 2 and preferably equal to 2, a hot melt support polymer, soluble in the dinitrile compound.

Abstract: A lithium secondary battery includes a positive electrode; a negative electrode; and an electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, and the electrolyte includes a lithium salt; a non-aqueous solvent; and a phosphite compound represented by Formula 2, wherein the phosphite compound is present in amount of about 0.1 wt % to about 5 wt % based on a total weight of the electrolyte: LixNiyM1-yO2-zAz??Formula 1 wherein, in Formula 1, 0.9?x?1.2, 0.7?y?0.98, and 0?z<0.2; M comprises Al, Mg, Mn, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Bi, or a combination thereof; and A is an element having an oxidation number of ?1 or ?2; wherein in Formula 2, R1 to R3 are independently an unsubstituted C1-C30 alkyl group or an unsubstituted C6-C60 aryl group.

Abstract: The present invention relates to a lithium ion cathode material and a lithium ion battery. The chemical formula of the cathode material is: LiaNixCoyMnzMbO2, wherein 1.0?a?1.2; 0.00?b?0.05; 0.30?x?0.60; 0.10?y?0.40; 0.15?z?0.30; x+y+z=1; M is one or two or more selected from the group consisting of Mg, Ti, Al, Zr, Y, W, Mn, Ba and rare earth elements; wherein the scanning electron microscope observation shows that, the cathode material consists of secondary particles agglomerated by 10 or less primary single crystal particles and secondary particles agglomerated by more than 10 primary single crystal particles, and wherein, the area percentage of the secondary particles agglomerated by 10 or less primary single crystal particles is greater than 80%, and the area percentage of the secondary particles agglomerated by more than 10 primary single crystal particles is less than or equal to 20%.

Abstract: A positive electrode active material contains a lithium composite oxide and a covering material. The lithium composite oxide contains at least one element selected from the group consisting of fluorine, chlorine, nitrogen, and sulfur. The lithium composite oxide has a crystal structure that belongs to space group C2/m. The ratio I(003)/I(104) of a first integrated intensity I(003) of a first peak corresponding to a (003) plane to a second integrated intensity I(104) of a second peak corresponding to a (104) plane in an XRD pattern of the lithium composite oxide satisfies 0.05?I(003)/I(104)?0.90. The covering material has an electron conductivity of 106 S/m or less.

Abstract: An objective of the present invention is to provide a positive electrode active material that can inhibit the capacity changes associated with temperature variations, and an alkaline battery that contains this positive electrode active material. Aluminum and ytterbium are at least partially solid-dissolved in nickel hydroxide in the nickel composite hydroxide present in the positive electrode active material of the present invention.

Abstract: Provided is a lithium nickel complex oxide represented by Chemical Formula 1: LiwNiIIx1NiIIIx2MnyCozFdO2-d??<Chemical Formula 1> where x1+x2+y+z=1, 0.4?x1+x2?0.9, 0<y?0.6 and 0<z?0.6, 0.9?w?1.3, and 0<d?0.3.

Abstract: The present invention relates to a positive electrode active material for a secondary battery, which comprises a core including a lithium composite metal oxide, and a surface treatment layer located on a surface of the core and including an amorphous oxide, wherein the amorphous oxide including silicon (Si), nitrogen (N) and at least one metal element selected from the group consisting of a Group 1A element, a Group 2A element, and a Group 3B element, and a method for preparing the same.

Abstract: A positive active material for a rechargeable lithium battery includes a lithium metal oxide represented by the following Chemical Formula 1: (Li1?(x+y)NaxKy)(Co1?(a+b)ZraM?b)O2??[Chemical Formula 1] wherein, 0<x?0.1, 0?y?0.1, 0<x+y?0.1, 0<a?0.1, 0?b?0.1 and 0<a+b?0.1, and M? is at least one element selected from Y, Nb, V, Cr, Mn, Fe, Ni, Cu, Zn, Mg, Ca, and Sr.

Abstract: An electrolyte for a lithium-ion electrochemical cell comprises a non-aqueous solution of a lithium salt and a redox shuttle salt compound in a non-aqueous solvent, wherein the redox shuttle compound comprises an amino-substituted cyclopropenium salt of Formula (I) as described herein.

Abstract: The present invention provides lithium nickelate-based positive electrode active substance particles having a high energy density which are excellent in charge/discharge cycle characteristics when highly charged, and hardly suffer from generation of gases upon storage under high-temperature conditions, and a process for producing the positive electrode active substance particles, as well as a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles each comprising a core particle X comprising a lithium nickelate composite oxide having a layer structure which is represented by the formula: Li1+aNi1-b-cCobMcO2 wherein M is at least one element selected from the group consisting of Mn, Al, B, Mg, Ti, Sn, Zn and Zr; a is a number of ?0.1 to 0.2 (?0.1?a?0.2); b is a number of 0.05 to 0.5 (0.05?b?0.5); and c is a number of 0.01 to 0.4 (0.01?c?0.

Abstract: A lithium secondary battery includes a cathode formed from a cathode active material including a first cathode active material particle and a second cathode active material particle, an anode and a separator interposed between the cathode and the anode. The first cathode active material particle includes a lithium metal oxide including a continuous concentration gradient in at least one region between a central portion and a surface portion. The second cathode active material particle includes a lithium metal oxide including at least two metals except for lithium which have constant concentrations from a central portion to a surface, and the second cathode active material particle includes an excess amount of nickel among the metals except for lithium.

Abstract: A lithium positive electrode active material including at least 95 wt % spinel having a chemical composition of LixNiyMn2-y-z1-z2D1z1D2z2O4, wherein 0.9?x?1.1, 0.4?y?0.5, 0.005?z1?0.2, 0?z2?0.2, wherein D1 and D2 are dopants chosen between the following elements: Co, Cu, Ti, Zn, Mg, Fe or combinations thereof. D1 and D2 are different dopants, and the lithium positive electrode active material is a powder composed of material particles, wherein the distribution of dopant D1 is non-uniform along a radial axis of the material particles and the distribution of the dopant D2 is substantially uniform along the radial axis of the material particles. Also, a process for preparing the lithium positive electrode active material and a secondary battery comprising the lithium positive electrode active material.

Abstract: The present invention related to an electrochemical cell comprising an anode of a Group IA metal and a cathode of a composite material prepared from an aqueous mixture of iron sulfate, cobalt sulfate and sulfur. The cathode material of the present invention provides an increased rate pulse performance compared to iron disulfide cathode material. This makes the cathode material of the present invention particularly useful for implantable medical applications.

Abstract: The present invention discloses a spherical or spherical-like layered structure lithium-nickel-cobalt-manganese composite oxide cathode material as well as preparation methods and applications thereof. A chemical formula of the cathode material is: LiaNixCoyMnzO2, wherein, 1.0?a?1.2, 0.30?x?0.90, 0.05?y?0.40, 0.05?z?0.50, and x+y+z=1. The cathode material powder is a single ?-NaFeO2 type layered structure, and full width at half maximum of 110 diffraction peak which is in the vicinity of the X-ray diffraction angle 2 theta of 64.9° is usually 0.07 to 0.15, and the average crystallite size is usually greater than 900 ? and less than 2000 ?. Under scanning electron microscope, it can be seen that the cathode material is mainly consisted of spherical or spherical-like primary mono-crystal particles and a small amount of secondary agglomerated particles, and wherein, the particle diameter of the primary mono-crystal particles is 0.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery achieves high output characteristics and battery capacity, and allows a high electrode density to be achieved in the case of using the material for a positive electrode of a battery; and a non-aqueous electrolyte secondary battery uses the positive electrode active material, thereby achieving a high output with a high capacity. Prepared is a nickel composite hydroxide including plate-shaped secondary particles aggregated with overlaps between plate surfaces of multiple plate-shaped primary particles, where shapes projected from directions perpendicular to the plate surfaces of the plate-shaped primary particles are any plane projection shape of spherical, elliptical, oblong, and massive shapes, and the secondary particles have an aspect ratio of 3 to 20, and a volume average particle size (Mv) of 4 ?m to 20 ?m measured by a laser diffraction scattering method.

Abstract: An electrode for a lithium-ion cell comprising a ‘layered-spinel’ composite oxide material is disclosed. The ‘layered-spinel’ can be a material of formula xLiMO2.(1?x)LiyM?zO4, wherein 0<x<1; LiMO2 is a lithium metal oxide having a layered structure in which M comprises one or more transition metals and optionally lithium, and has a combined average oxidation state of +3; and LiyM?zO4 is a lithium metal oxide having a spinel structure, 1?y?1.33, 1.66?z?2, and M? comprises one or more transition metals, and has a combined average metal oxidation state in the range of about +3.5 to about +4.

Abstract: The present invention industrially provides: a non-aqueous electrolyte secondary battery having a high energy density and high cycling characteristics; a cathode active material for a non-aqueous electrolyte secondary battery having a high packing efficiency; and a nickel manganese containing composite hydroxide having a small particle size, a narrow particle size distribution, and a high sphericity. When producing the nickel manganese containing composite hydroxide by a crystallization reaction using material solution where metal compounds including nickel and manganese dissolve, a nucleation process is performed in a non-oxidizing atmosphere by stirring an aqueous solution for nucleation, that includes the quantity of the material solution corresponding to 0.6% to 5.0% of the whole amount of substance of metal element included in a metal compound used for the overall crystallization reaction.

Abstract: A cathode material formed of a plurality of lithium inclusive particles. The particles have a core surrounded by a shell. The shell is characterized by a plurality of pores. Exemplary materials of which the particles are formed include NMC. The cathode material is suitable for use in a lithium-ion battery which has application in apparatus such as automotive vehicles.

Abstract: A particulate precursor compound for manufacturing a lithium transition metal (M)-oxide powder for use as an active positive electrode material in lithium-ion batteries, wherein (M) is NixMnyCozAv, A being a dopant, wherein 0.33?x?0.60, 0.20?y?0.33, and 0.20?z?0.33, v?0.05, and x+y+z+v=1, the precursor comprising Ni, Mn and Co in a molar ratio x:y:z and having a specific surface area BET in m2/g and a sulfur content S expressed in wt %, wherein formula (I).

Abstract: A process is described for producing mixed oxide in particulate form, comprising cations of lithium and cations of at least two transition metals selected from the group consisting of nickel, cobalt, manganese, titanium, vanadium, chromium and iron, as are mixed oxides produced by this process.

Abstract: The present invention is a negative electrode material for a non-aqueous electrolyte secondary battery, including negative electrode active material particles containing a silicon compound expressed by SiOx where 0.5?x?1.6, the silicon compound being coated with a carbon coating layer composed of a carbon component, wherein the negative electrode active material particles contain a SiO2 component having a tridymite structure and exhibit a diffraction peak around 21.825° with a half width (2?) of 0.15° or less in X-ray diffraction. This negative electrode material for a non-aqueous electrolyte secondary battery can increase the battery capacity and improve the cycle performance and the initial charge and discharge performance.

Abstract: Provided is a method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries that achieves both high thermal stability and high charge/discharge capacity and has excellent cycle characteristics and an easy and safe production method thereof, and a nonaqueous electrolyte secondary battery using the positive electrode active material. A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes a crystallization step of adding an alkaline aqueous solution to a mixed aqueous solution containing at least nickel and cobalt for crystallization to obtain a nickel-containing hydroxide represented by a general formula Ni1?a??b?COa?Mb?(OH)2, a mixing step of mixing the obtained nickel-containing hydroxide, a lithium compound, and a niobium compound to obtain a lithium mixture, and a firing step of firing the lithium mixture in an oxidative atmosphere at 700 to 840° C. to obtain a lithium-transition metal composite oxide.

Abstract: Provided is a nonaqueous electrolyte secondary battery in which Li3PO4 is added to a positive electrode active material layer and the increase of battery temperature when the voltage rises is suppressed. The nonaqueous electrolyte secondary battery disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The positive electrode has a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, Li3PO4, and polyvinyl alcohol having a degree of saponification of 86% by mole or more. The content of Li3PO4 in the positive electrode active material layer is 1% by mass or more and 15% by mass or less. The content of the polyvinyl alcohol having a degree of saponification of 86% by mole or more in the positive electrode active material layer is 0.05% by mass or more and 0.2% by mass or less.

Abstract: The present invention provides a positive electrode active material for a non-aqueous secondary battery including: core particles including, as a main component, a lithium metal composite oxide represented by the following formula: LixNiyM11-y-zM2zO2 in which 0.90?x?1.50, 0.6?y?1.0, 0?z?0.02, M1 represents at least one element selected from Co, Mn and Al, and M2 represents at least one element selected from the group consisting of Zr, Ti, Mg, B and W, and containing a water-soluble lithium compound in a content of 1.0% or less in terms of a mass ratio; and a surface-treated portion obtained by treating the core particles with a coupling agent.

Abstract: A positive electrode active material for non-aqueous electrolyte secondary batteries that can achieve a high output characteristic and a high battery capacity when used in a positive electrode of a battery and that can achieve a high electrode density, and a non-aqueous electrolyte secondary battery that uses such a positive electrode active material and can achieve a high capacity and a high output. A lithium-manganese-cobalt composite oxide includes plate-shaped secondary particles each obtained by aggregation of a plurality of plate-shaped primary particles caused by overlapping of plate surfaces of the plate-shaped primary particles, wherein a shape of the primary particles is any one of a spherical, elliptical, oval, or a planar projected shape of a block-shaped object, and the secondary particles have an aspect ratio of 3 to 20 and a volume-average particle size (Mv) of 4 ?m to 20 ?m as measured by a laser diffraction scattering process.

Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to the space group FM3-M and that is represented by the composition formula (1): LixMeyO?F???(1) wherein Me denotes one or two or more elements selected from the group consisting of B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, and solid solutions thereof, and the following conditions are satisfied. 1.8?x?2.2 0.8?y?1.3 1.2???2.5 0.5???1.

Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte, and more particularly, the positive electrode includes a positive active material including lithium-metal oxide in which at least one metal has the continuous concentration gradient from the center to the surface, and the non-aqueous electrolyte includes a lithium salt, a multinitrile compound, and an organic solvent, thereby improving storage characteristics at a high voltage and lifetime characteristics.

Abstract: Provided are sealed pouch-cell batteries that are alkaline batteries or non-aqueous proton-conducing batteries. A pouch cell includes a flexible housing such as is used for pouch cell construction where the housing is in the form of a pouch, a cathode comprising a cathode active material suitable for use in an alkaline battery, an anode comprising an anode active material suitable for use in an alkaline battery, an electrolyte that is optionally an alkaline or proton-conducting electrolyte, and wherein the pouch does not include or require a safety vent or other gas absorbing or releasing system. The batteries provided function contrary to the art recognized belief that such battery systems were impossible due to unacceptable gas production during cycling.

Abstract: A lithium secondary battery comprises a cathode, an anode and a non-aqueous electrolyte. The cathode includes a cathode active material containing lithium-metal oxide of which at least one of metals has a continuous concentration gradient from a core part to a surface part thereof, and is doped with transitional metal. The lithium-metal oxide includes elements M1, M2 and M3. One of M1, M2 and M3 has a concentration gradient range in which a concentration increases from the core part to the surface part.

Abstract: Methods of making anode active materials include milling graphite particles with carbohydrate particles to yield graphite-carbohydrate particles, milling the particles with anode material and carbonizing to form composite anode material particles. The anode active materials thus producted are provided with an at least partially porous carbon-graphite coating with both electronic and ionic conductivity.

Abstract: Provided are a positive active material for a lithium secondary battery, a method of preparing the positive active material, and a lithium ion secondary battery including the positive active material, the positive active material including a lithium-containing compound represented by the formula of Li2?xM?O3?y (wherein M? is at least one element selected from Mg, Al, Ca, Ti, V, Cr, Fe, Cu, Zn, Ga, Sr, Y, Zr, Nb, Mo, Ru, and F; 0?x?1; and 0?y?3) on a surface or inside of a lithium metal oxide represented by the formula of Li1?xNiyM1?yO2?z (wherein M is at least one element selected from Co and Mn; 0?x?0.05; 0.6?y?1; and 0?z?0.05).