Abstract: The present disclosure relates to a multilayer electrode and a method of manufacturing the same, and more specifically to a multilayer electrode comprising an electrode collector; and two or more electrode active material layers which are sequentially coated on one surface or both surfaces of the electrode current collector, wherein the electrode active material layers each include a carbon-based material, a binder, and a silicon-based material, wherein in the mutually adjacent electrode active material layers based on the direction of formation of the electrode active material layers, the content of the carbon-based material and the content of the binder in the electrode active material layer located relatively close to the electrode collector are larger than the content of the carbon-based material and the content of the binder in the electrode active material layers located relatively far away from the electrode current collector.

Abstract: A positive-electrode active material contains a lithium composite oxide containing at least one selected from the group consisting of F, Cl, N, and S. The crystal structure of the lithium composite oxide belongs to a space group C2/m. An XRD pattern of the lithium composite oxide comprises a first peak within the first range of 44 degrees to 46 degrees of a diffraction angle 2? and a second peak within the second range of 18 degrees to 20 degrees of the diffraction angle 2?. The ratio of the second integrated intensity of the second peak to the first integrated intensity of the first peak is within a range of 0.05 to 0.90.

Abstract: A positive electrode active material for a lithium secondary battery, comprising a lithium-containing composite metal oxide in the form of secondary particles formed by aggregation of primary particles capable of being doped and undoped with lithium ions, each of the secondary particles having on its surface a coating layer, the positive electrode active material satisfying the following requirements (1) to (3): (1) the metal oxide has an ?-NaFeO2 type crystal structure of following formula (A): Lia(NibCocM11-b-c)O2??(A) wherein 0.9?a?1.2, 0.9?b<1, 0<c?0.1, 0.9<b+c?1, and M1 represents at least one optional metal selected from Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Cu, Zn, Ga, Ge, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In and Sn; (2) the coating layer comprises Li and M2, wherein M2 represents at least one optional metal selected from Al, Ti, Zr and W; and (3) the active material has an average secondary particle diameter of 2 to 20 ?m, a BET specific surface area of 0.1 to 2.

Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1: Vs<V1?3.6.??[Relation 1] In Relation 1, V1 is a voltage value at a point where a tangent line to a value corresponding to 50% of the first peak value intersects the line dQ/dV=0, and Vs is a charge start voltage, as determined from a differential capacity (dQ/dV)-voltage charge/discharge plot.

Abstract: A cathode active material includes a lithium composite oxide having a crystal structure which belongs to a layered structure. The lithium composite oxide has a BET specific surface area of not less than 5 m2/g and not more than 10 m2/g. The lithium composite oxide has an average particle size of not less than 3 ?m and not more than 30 ?m. The lithium composite oxide, an average crystallite size calculated by an X-ray diffraction method is not less than 150 ? and not more than 350 ?.

Abstract: A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure. The first and second positive active materials may both include nickel-based positive active materials. A method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material are also provided.

Abstract: Silicon particles for use in an electrode in an electrochemical cell are provided. The silicon particles may have outer regions extending about 20 nm deep from the surfaces, the outer regions comprising an amount of aluminum such that a bulk measurement of the aluminum comprises at least about 0.01% by weight of the silicon particles. The bulk measurement of the aluminum may provide the amount of aluminum present at least in the outer regions.

Abstract: A spinel-structured lithium manganese-based positive electrode active material includes a lithium manganese oxide represented by Formula 1, and a coating layer which is disposed on a surface of the lithium manganese oxide and includes at least one coating element selected from the group consisting of aluminum, titanium, tungsten, boron, fluorine, phosphorus, magnesium, nickel, cobalt, iron, chromium, vanadium, copper, calcium, zinc, zirconium, niobium, molybdenum, strontium, antimony, bismuth, silicon, and sulfur, and a positive electrode and a lithium secondary battery which include the positive electrode active material, Li1+aMn2?bM1bO4?cAc??[Formula 1] wherein, in Formula 1, M1 is at least one metallic element including lithium (Li), A is at least one element selected from the group consisting of fluorine, chlorine, bromine, iodine, astatine, and sulfur, 0?a?0.2, 0<b?0.5, and 0?c?0.1.

Abstract: Disclosed are an all-solid battery and a method of manufacturing the same. The all-solid battery as disclosed herein may include current collectors having the same size for a cathode and an anode, the elongation areas of the cathode and the anode may be controlled due to the ductility of the current collectors during a pressing process. Thus, areas of the anode and the cathode may become different from each other upon the pressing, thus preventing a short-circuit fault from being formed at the edge portion thereof in the pressing process.

Abstract: Provided is an aqueous battery configured to use hydroxide ions (OH?) as carrier ions. The aqueous battery is an aqueous battery comprising a cathode layer, an anode layer and an aqueous liquid electrolyte, wherein the cathode layer contains, as a cathode active material, a graphite having a rhombohedral crystal structure; wherein the anode layer contains, as an anode active material, at least one selected from the group consisting of an elemental Zn, an elemental Cd, an elemental Fe, a Zn alloy, a Cd alloy, an Fe alloy, ZnO, Cd(OH)2, Fe(OH)2 and a hydrogen storage alloy; and wherein, as an electrolyte, at least one selected from the group consisting of KOH and NaOH is dissolved in the aqueous liquid electrolyte.

Abstract: A positive active material for a rechargeable lithium battery includes: a core having a layered structure; and a surface layer on at least one portion of the surface of the core and including an oxide, wherein the oxide includes at least one first element and at least one second element each selected from Ti, Zr, F, Mg, Al, P, and a combination thereof, the first element and the second element being different from one another, the first element included in the positive active material in an amount of about 0.01 mol % to about 0.2 mol % based on a total weight of the positive active material, and the second element included in the positive active material in an amount of about 0.02 mol % to about 0.5 mol % based on a total weight of the positive active material. A rechargeable lithium battery includes the positive active material.

Abstract: A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1: Vs<V1?3.6.??[Relation 1] In Relation 1, V1 is a voltage value at a point where a tangent line to a value corresponding to 50% of the first peak value intersects the line dQ/dV=0, and Vs is a charge start voltage, as determined from a differential capacity (dQ/dV)-voltage charge/discharge plot.

Abstract: An energy storage device includes a negative electrode having a negative active material layer containing amorphous carbon as an active material, a curve attained by determining a rate of change (dQ/dV) in a potential (V) of the amorphous carbon in a discharge capacity (Q) of the amorphous carbon per unit quantity based on a result attained by measuring the potential (V) with respect to the discharge capacity (Q) and representing the rate of change (dQ/dV) with respect to the potential (V) has one or more peaks in a range in which the potential of the amorphous carbon is 0.8 V or more and 1.5 V or less, and a potential of the negative electrode at time of full charge is 0.25 V or more with respect to a lithium potential.

Abstract: An anode includes: (1) a current collector; and (2) an interfacial layer disposed over the current collector. The interfacial layer includes a film of a layered material and a reinforcing material selectively disposed over certain regions of the film, while other regions of the film remain exposed from the reinforcing material.

Abstract: A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide including a secondary particle in which a plurality of plate-shaped primary particles are agglomerated; and a lithium manganese composite oxide having at least two crystal lattice structures, wherein the secondary particle has a regular array structure in which (003) planes of the primary particles are oriented in a vertical direction with respect to the surface of the secondary particle.

Abstract: A positive electrode active material includes a lithium transition metal oxide represented by Formula 1, and a lithium-containing inorganic compound layer formed on a surface of the lithium transition metal oxide, Li1+a(NibCocXdM1eM2f)1?aO2??[Formula 1] in Formula 1, X is at least one selected from the group consisting of manganese (Mn) and aluminum (Al), M1 is at least one selected from the group consisting of sulfur (S), fluorine (F), phosphorus (P), and nitrogen (N), M2 is at least one selected from the group consisting of zirconium (Zr), boron (B), cobalt (Co), tungsten (W), magnesium (Mg), cerium (Ce), tantalum (Ta), titanium (Ti), strontium (Sr), barium (Ba), hafnium (Hf), F, P, S, lanthanum (La), and yttrium (Y), 0?a?0.1, 0.6?b?0.99, 0?c?0.2, 0?d?0.2, 0<e?0.1, and 0<f?0.1. A method of preparing the positive electrode active material, a positive electrode and a lithium secondary battery are also provided.

Abstract: A method for preparing a positive electrode active material and a positive electrode active material prepared by the method are provided. The method includes preparing a lithium composite transition metal oxide represented by Formula 1, and washing the lithium composite transition metal oxide with a cleaning liquid containing cleaning water and a surfactant. The cleaning liquid contains cleaning water in an amount of no less than 50 parts by weight and less than 400 parts by weight based on 100 parts by weight of the lithium composite transition metal oxide.

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

Abstract: A cathode active material for a lithium secondary battery includes a nickel-based lithium metal oxide particle doped with Zr and Al. The nickel-based lithium metal oxide particle includes a core portion having a constant molar content of nickel, and a shell portion surrounding an outer surface of the core portion and having a concentration gradient in which a molar content of nickel gradually decreases in a direction from an interface with the core portion to an outermost periphery. The core portion and the shell portion are doped with Al and Zr.

Abstract: A nickel (Ni)-based active material for a lithium secondary battery, a preparing method thereof, and a lithium secondary battery including a positive electrode including the same. The Ni-based active material includes a secondary particle including a plurality of particulate structures, wherein each of the particulate structures includes a porous core portion and a shell portion including primary particles radially arranged on the porous core portion, and lithium phosphate is in the porous core portion, between the plurality of primary particles, and on the surface of the secondary particle. The Ni-based active material includes a porous inner portion including the porous core portion; and an outer portion comprising the the shell portion, and the Ni-based active material includes the porous inner portion having closed pores and the outer portion, wherein the porous inner portion has a density less than that of the outer portion, and the Ni-based active material has a net density of 4.7 g/cc or less.

Abstract: A positive electrode with a positive electrode current collector and a positive electrode mixture layer, and the positive electrode mixture layer has first and second positive electrode mixture layers. The first positive electrode mixture layer comprises a positive electrode active material composed of compound A that contains Ni, Co, Al and Li. The second positive electrode mixture layer is disposed between the first positive electrode mixture layer and the positive electrode current collector, and comprises a positive electrode active material including: said compound A; and a Li-containing compound B which is smaller in specific capacity (mAh/g) and average particle diameter than said compound A. In said compound A, a ratio of Ni to the total number of moles of the metal elements except Li is 82 mol % or more. The average particle diameter of said compound B is 55% or less of the average particle diameter of said compound A.

Abstract: Provided is a nonaqueous electrolyte secondary battery, in which the capacity retention rate after high temperature storage is high, the gas amount after high temperature storage is suppressed, the resistance after high temperature storage is low, the amount of metal dissolution from a positive electrode is small, and the amount of heat generation at a high temperature is small. A nonaqueous electrolyte secondary battery including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.32, the molar ratio of Ni/(Ni+Mn+Co) is 0.

Abstract: Provided is a nickel-based active material precursor for a lithium secondary battery, including: a secondary particle including a plurality of particulate structures, wherein each of the particulate structures includes a porous core portion and a shell portion including primary particles radially arranged on the porous core portion, and in 50% or more of the primary particles constituting a surface of the secondary particle, a major axis of each of the primary particles is aligned along a normal direction of the surface of the secondary particle. When the nickel-based active material precursor for a lithium secondary battery is used, it is possible to obtain a nickel-based active material which intercalates and deintercalates lithium and has a short diffusion distance of lithium ions.

Abstract: The positive electrode active material disclosed herein includes a base portion including a lithium transition metal complex oxide having a layered crystal structure, and a coating portion including an electroconductive oxide having a layered crystal structure. A smaller angle ? formed by a stacking plane direction of the lithium transition metal complex oxide and a stacking plane direction of the electroconductive oxide satisfies the following conditions: an average angle ?ave. obtained by arithmetically averaging the angle ? satisfies 0°??ave.?60°; and a ratio of points in which the angle ? is greater than 60° is 39% or less.

Abstract: A lithium secondary battery comprises a cathode, an anode, a separator and a nonaqueous electrolyte solution. The cathode includes a first cathode active material in which at least one of metals included in the first cathode material has a concentration gradient region between a central portion and a surface portion, and a second cathode active material having a single particle structure. The lithium secondary battery has improved life-span and penetration stability.

Abstract: The present invention relates to a positive electrode active material for a lithium secondary battery, including a lithium composite metal oxide in a form of secondary particles formed by aggregation of primary particles, wherein the secondary particles have voids in interior thereof and a number of the voids with cross section thereof present per 1 ?m2 of cross section of the secondary particles is 0.3 or more and 15 or less.

Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries and production method thereof that are able to improve the stability of positive electrode mixture material pastes used to produce nonaqueous electrolyte secondary batteries, as well as to improve the output characteristics and charge/discharge cycle characteristics of secondary batteries. A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes mixing a fired powder formed of a lithium-metal composite oxide having a layered crystal structure, a first compound which is at least one selected from a group consisting of a lithium-free oxide, a hydrate of the oxide, and a lithium-free inorganic acid salt, and water and drying a mixture resulting from the mixing. The fired powder includes secondary particles formed by agglomeration of primary particles. The first compound reacts with lithium ions in the presence of water to form a second compound including lithium.

Abstract: The present disclosure relates to a cathode additive, a method for preparing the same, and a cathode and a lithium secondary battery including the same. More specifically, one embodiment of the present disclosure provides a cathode additive that can offset an irreversible capacity imbalance, and increase the initial charge capacity of a cathode.

Abstract: Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.

Abstract: Provided is a cobalt precursor for preparing a lithium cobalt oxide of a layered structure which is included in a positive electrode active material, wherein the cobalt precursor is cobalt oxyhydroxide (CoM?OOH) doped with, as dopants, magnesium (Mg) and M? different from the magnesium.

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 which predominantly includes lithium transition metal composite oxide particles containing Ni and Al, and which has a low charge transfer resistance and thus allows the battery capacity to be increased. The composite oxide particles contain 5 mol % or more Al relative to the total molar amount of metal elements except Li, include a particle core portion and an Al rich region on or near the surface of the composite oxide particle wherein the Al concentration in the particle core portion is not less than 3 mol % and the Al concentration in the Al rich region is 1.3 times or more greater than the Al concentration in the particle core portion. The composite oxide particles contain 0.04 mol % or more sulfate ions relative to the total molar amount of the particles.

Abstract: A method of preparing a positive electrode active material includes mixing a lithium raw material and a nickel-containing transition metal hydroxide precursor containing nickel in an amount of 65 mol % or more based on a total number of moles of transition metals and performing a first heat treatment to prepare a nickel-containing lithium transition metal oxide. The method also includes mixing a boron and carbon-containing raw material and a cobalt-containing raw material with the nickel-containing lithium transition metal oxide to form a mixture, and performing a second heat treatment on the mixture to form a coating material including B and Co on a surface of the lithium transition metal oxide. A positive electrode active material prepared by the preparation method is formed, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode active material.

Abstract: A high voltage lithium nickel cobalt manganese oxide precursor is provided in the present disclosure. Primary particles of the lithium nickel cobalt manganese oxide precursor are in a clustered “petals” configuration. The “petal” has a sheet shape. A secondary particle of the lithium nickel cobalt manganese oxide precursor has a spherical structure with a loosened interior. A method for making the high voltage lithium nickel cobalt manganese oxide precursor is further provided in the present disclosure. In the method, through the unique design of the reaction atmosphere in combination with advantages of high-low pH phase separation as well as the appropriate matching between the output power and flow rates, the lithium nickel cobalt manganese oxide precursor having “petal-like” and sheet shaped primary particles and spherical and porous secondary particles is made.

Abstract: This positive electrode active substance for a nonaqueous electrolyte secondary battery contains secondary particles that are aggregates of primary particles of a lithium transition metal oxide. The average particle diameter of the primary particles is within the range of 0.5 to 2 ?m, the compressive breaking strength of the primary particles is 1,000 MPa or greater, and the crystallite diameter of the primary particles is within the range of 100 to 280 nm.

Abstract: Batteries, methods for recycling batteries, and methods of forming one or more electrodes for batteries are disclosed. The battery includes at least one of (i) a cathode including a nickel-rich material and a first sub-nanoscale metal oxide coating on the nickel-rich material; and (ii) an anode including an anode material and a second sub-nanoscale metal oxide coating disposed on the anode material.

Abstract: A method of forming an improved calcined lithium metal oxide is provided wherein the metal comprises at least one of nickel, manganese and cobalt. The method comprises forming a first solution in a first reactor wherein the first solution comprises at least one first salt of at least one of lithium, nickel, manganese or cobalt in a first solvent. A second solution is formed wherein the second solution comprises a second salt of at least one of lithium, nickel, manganese or cobalt in a second solvent wherein the second salt is not present in the first solution. A gas in introduced into said first solution to form a gas saturated first solution. A second solution is added to the gas saturated first solution without bubbling to form a lithium metal salt. The lithium metal salt dried and calcined to form the calcined lithium metal oxide.

Abstract: The present invention relates to a cathode additive, a method for preparing the same, and a cathode and a lithium secondary battery including the same. More specifically, one embodiment of the present invention provides a cathode additive that can offset an irreversible capacity imbalance, increase the initial charge capacity of a cathode, and simultaneously inhibit the generation of gas in a battery.

Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium secondary battery which includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte solution, wherein the positive electrode includes a positive electrode active material represented by Formula 1, and the non-aqueous electrolyte solution includes a non-aqueous organic solvent, a first lithium salt, lithium bis(fluorosulfonyl)imide as a second lithium salt, and an additive, wherein a molar ratio of the first lithium salt to the second lithium salt is in a range of 1:0.01 to 1:1, and the additive is a mixed additive which includes fluorobenzene, tetravinylsilane, and tertiary butylbenzene in a weight ratio of 1:0.05:0.1 to 1:1:1.5. Li(NiaCobMnc)O2??[Formula 1] (in Formula 1, 0.65<a?0.9, 0.05?b<0.2, 0.05?c<0.2, and a+b+c=1.

Abstract: According to one embodiment, provided is an active material including monoclinic niobium titanium composite oxide particles, and carbon fibers with which at least a part of surfaces of the monoclinic niobium titanium composite oxide particles is covered. The monoclinic niobium titanium composite oxide particles satisfy 1.5?(?/?)?2.5. The monoclinic niobium titanium composite oxide particles have an average primary particle size of 0.05 ?m to 2 ?m. The carbon fibers contain one or more metal elements selected from the group consisting of Fe, Co and Ni, and satisfy 1/10000?(?/?)? 1/100. The carbon fibers have an average fiber diameter in the range of 5 nm to 100 nm.

Abstract: There is provided a cathode active material precursor for a non-aqueous electrolyte secondary battery that is a complex metal hydroxide with a flow factor of 10 or greater to 20 or smaller.

Abstract: The present disclosure provides methods for producing cathode materials for lithium ion batteries. Cathode materials that contain manganese are emphasized. Representative materials include LixNi1-y-zMnyCozO2 (NMC) (where x is in the range from 0.80 to 1.3, y is in the range from 0.01 to 0.5, and z is in the range from 0.01 to 0.5), LixMn2O4(LM), and LixNi1-yMnyO2 (LMN) (where x is in the range from 0.8 to 1.3 and y is in the range from 0.0 to 0.8). The process includes reactions of carboxylate precursors of nickel, manganese, and/or cobalt and lithiation with a lithium precursor. The carboxylate precursors are made from reactions of pure metals or metal compounds with carboxylic acids. The manganese precursor contains bivalent manganese and the process controls the oxidation state of manganese to avoid formation of higher oxidation states of manganese.

Abstract: A positive electrode active material includes a lithium-rich lithium manganese-based oxide, wherein the lithium-rich lithium manganese-based oxide is represented by the following chemical formula (1), Li1+aNixCoyMnzMvO2-bAb??(1) wherein, 0<a?0.2, 0<x?0.4, 0<y?0.4, 0.5?z?0.9, 0?v?0.2, a+x+y+z+v=1, and 0?b?0.5; M is one or more elements selected from the group consisting of Al, Zr, Zn, Ti, Mg, Ga, In, Ru, Nb, and Sn; and A is one or more elements selected from the group consisting of P, N, F, S and Cl; wherein (i) lithium tungsten (W) compound, or the (i) lithium tungsten (W) compound and (ii) tungsten (W) compound are contained on the lithium-rich lithium manganese-based oxide; in an amount of 0.1% to 7% by weight based on the total weight of the positive electrode active material, wherein the (i) lithium tungsten (W) compound includes a composite of the (ii) tungsten (W) compound and a lithium.

Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries includes secondary particles of lithium transition metal oxide including aggregates of primary particles of the oxide. The primary particles have an average particle size of not less than 1 ?m, and the secondary particles have a void content of more than 30%.

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 separation layer interposed between the cathode and the anode. The first cathode active material particle includes a lithium metal oxide including a concentration gradient and has a secondary particle structure formed from an assembly of primary particles. The second cathode active material particle includes a lithium metal oxide having a single particle structure. The first and second cathode active material particles each includes at least two metals except from lithium, and an amount of nickel is the largest among those of the metals in each of the first and second cathode active material particles.

Abstract: A metal porous body is a metal porous body mainly composed of nickel and having a framework of a three-dimensional network structure, Ni(OH)2 being present in a surface of the framework, when the metal porous body is subjected to at least 30 potential scans between a lower limit potential of ?0.10 V and an upper limit potential of +0.65 V with respect to a hydrogen standard potential in not less than 10% by mass and not more than 35% by mass of a potassium hydroxide aqueous solution, at least oxygen being detected within a depth of 5 nm from the surface, and hydrogen being detected at least in the surface.

Abstract: Provided is a conductive composition for electrodes, the conductive composition having excellent electrical conductivity and dispersibility. Also provided are: a positive electrode for non-aqueous batteries, the positive electrode using the conductive composition and having low electrode plate resistance and excellent binding properties; and a non-aqueous battery having high energy density, high output characteristics, and high cycle characteristics. The conductive composition for electrodes contains a conductive material, an active material, a binder, and a dispersant, wherein the conductive material contains carbon black and a multi-walled carbon nanotube having a powder resistivity of 0.035 ?·cm or less as measured under a load of 9.8 MPa, and a median volumetric diameter D50 value, which is as a measure of dispersibility, in the range of 0.

Abstract: To provide a process for producing a cathode active material capable of obtaining a lithium ion secondary battery which has a high discharge capacity and a high initial efficiency, a cathode active material, a positive electrode for a lithium ion secondary battery, and a lithium ion secondary battery. A process for producing a cathode active material, which comprises a mixing step of mixing a lithium compound, an alkali metal compound other than Li, and a transition metal-containing compound containing at least Ni and Mn to obtain a mixture, a step of firing the mixture at a temperature of from 900 to 1,100° C. to obtain a first lithium-containing composite oxide containing the alkali metal other than Li, and a step of removing the alkali metal other than Li from the first lithium-containing composite oxide to obtain a second lithium-containing composite oxide represented by the following formula: aLi(Li1/3Mn2/3)O2·(1?a)LiMO2 wherein 0<a<1, and M is an element containing at least Ni and Mn.

Abstract: Described herein are low or no-cobalt materials useful as electrode active materials in a cathode for lithium or lithium-ion batteries. For example, compositions of matter are described herein, such as electrode active materials that can be incorporated into an electrode, such as a cathode. The disclosed electrode active materials exhibit high specific energy and voltage, and can also exhibit high rate capability and/or long operational lifetime.

Abstract: A positive electrode active material contains a lithium composite oxide containing fluorine and oxygen. The lithium composite oxide satisfies 1<Zs/Za<8, where Zs represents a first ratio of a molar quantity of fluorine to a total molar quantity of fluorine and oxygen in XPS of the lithium composite oxide, and Za represents a second ratio of a molar quantity of fluorine to a total molar quantity of fluorine and oxygen in an average composition of the lithium composite oxide. An XRD pattern of the lithium composite oxide includes a first maximum peak within a first range of 18° to 20° at a diffraction angle 2? and a second maximum peak within a second range of 43° to 46° at the diffraction angle 2?. The ratio I(18°-20°)/I(43°-46°) of a first integrated intensity I(18°-20°) of the first maximum peak to a second integrated intensity I(43°-46°) of the second maximum peak satisfies 0.05?I(18°-20°)/I(43°-46°)?0.90.