Abstract: A positive electrode active material of the present invention comprising a composite oxide containing Li and Ni, and optionally containing at least one element other than Li and Ni, is characterized in one of the following: primary particles constituting each of secondary particles of the composite oxide and having a variation coefficient of span of 17% or less, the span being a formula: (D190?D110)/D150 (D110, D150, D190: particle diameter corresponding to 10%, 50%, 90% of an integrated value in a number standard-particle diameter distribution of primary particle size); the primary particles having a variation coefficient of D150 of 19% or less; and the secondary particles having each of values of 1.00% or less, the values being formulae: |[ER1?ER21)/ER1]|×100, |[ER1?ER22)/ER1]|×100, |[ER1?ER23)/ER1]|×100 (ER1, ER21, ER22, ER23: element ratio (Li/(Ni+Other element(s))) of entire secondary particles, small particles, middle particles, large particles).

Abstract: By a method including at least a spraying/mixing step of: mixing a precursor compound of a positive electrode active material with a lithium compound to prepare a mixture; and simultaneously spraying a spraying agent containing at least one element onto the mixture, there can be produced a positive electrode active material for non-aqueous electrolyte secondary batteries, which does not adversely affect battery properties of non-aqueous electrolyte secondary batteries, without reducing production efficiency.

Abstract: Positive electrode active material particle powder includes lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape in which each (111) plane thereof is adjacent to at least one (100) plane thereof.

Abstract: The present invention provides a precursor of positive electrode active substance particles for non-aqueous electrolyte secondary batteries which have a high discharge voltage and a high discharge capacity, hardly suffer from side reactions with an electrolyte solution, and are excellent in cycle characteristics, positive electrode active substance particles for non-aqueous electrolyte secondary batteries, and processes for producing these particles, and a non-aqueous electrolyte secondary battery.

Abstract: A positive electrode active material comprises a Li-transition metal-layered oxide represented by the formula: Lia(NibCocAldMee)O2 (in which Me=Mn, Mg, Ti, Ru, Zr, Nb, Mo, W; 1.00?a?1.15; 0.25<b<1; 0<c?0.30; 0?d?0.05; 0?e?0.40), and is constituted of secondary particles formed by aggregation of primary particles. As to a compositional ratio of Li which is derived from unreacted substances or decomposed products in the secondary particles, a variation coefficient (Standard deviation value/Average value) of a Li-compositional ratio: Li/M (M=Ni+Co+Al+Me) is 30% or less. The positive electrode active material hardly deteriorates even if repeatedly charged/discharged, and enables stable charge/discharge, and then a non-aqueous electrolyte secondary battery is enabled to have an excellent output property and a long lifetime.

Abstract: Positive electrode active material particle powder includes: lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape having at least one plane that is adjacent to two planes.

Abstract: Excellent thermal stability in addition to excellent cycle property with maintaining a sufficient battery capacity is shown by positive electrode active material particles having a layered rock salt structure, represented by the compositional formula: (Li?Xc)(NiaCobXcZd)O2, in the compositional formula: X is a divalent metallic element capable of substituting for Li-site; Z is a metallic element containing at least Al and/or Mn, other than X; 0.93???1.15; 0.82?a<1.00; 0?b?0.12; 0.001?c+e?0.040; 0?d?0.10; and a+b+c+d=1.

Abstract: Positive electrode active material particle powder includes lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape in which each (111) plane thereof is adjacent to at least one (100) plane thereof.

Abstract: Positive electrode active material particle powder includes lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape in which each (111) plane thereof is adjacent to at least one (100) plane thereof.

Abstract: Positive electrode active material particle powder includes: lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape having at least one plane that is adjacent to two planes.

Abstract: Positive electrode active material particle powder includes: lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50 ) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape having at least one (110) plane that is adjacent to two (111) planes.

Abstract: A positive electrode active material comprises a Li-transition metal-layered oxide represented by the formula: Lia(NibCocAldMee)O2 (in which Me=Mn, Mg, Ti, Ru, Zr, Nb, Mo, W; 1.00?a?1.15; 0.25<b<1; 0<c?0.30; 0?d?0.05; 0?e?0.40), and is constituted of secondary particles formed by aggregation of primary particles. As to a compositional ratio of Li which is derived from unreacted substances or decomposed products in the secondary particles, a variation coefficient (Standard deviation value/Average value) of a Li-compositional ratio: Li/M (M=Ni+Co+Al+Me) is 30% or less. The positive electrode active material hardly deteriorates even if repeatedly charged/discharged, and enables stable charge/discharge, and then a non-aqueous electrolyte secondary battery is enabled to have an excellent output property and a long lifetime.

Abstract: The present invention provides a precursor of positive electrode active substance particles for non-aqueous electrolyte secondary batteries which have a high discharge voltage and a high discharge capacity, hardly suffer from side reactions with an electrolyte solution, and are excellent in cycle characteristics, positive electrode active substance particles for non-aqueous electrolyte secondary batteries, and processes for producing these particles, and a non-aqueous electrolyte secondary battery.

Abstract: The present invention provides a precursor of positive electrode active substance particles for non-aqueous electrolyte secondary batteries which have a high discharge voltage and a high discharge capacity, hardly suffer from side reactions with an electrolyte solution, and are excellent in cycle characteristics, positive electrode active substance particles for non-aqueous electrolyte secondary batteries, and processes for producing these particles, and a non-aqueous electrolyte secondary battery.

Abstract: This invention provides lithium manganate which has a high output and is excellent in high-temperature stability. This invention relates to lithium manganate particles which are produced by mixing a lithium compound, a manganese compound, a Y compound and an A compound and then calcining the resulting mixture, and have a composition represented by the following chemical formula 1 and an average secondary particle diameter (D50) of 1 to 15 ?m, in which Y is at least one element selected from the group consisting of Al and Mg; A is a sintering aid element having a melting point of not higher than 850° C.; x and y satisfy 0.03?x?0.15 and 0?y?0.20, respectively; z is in the range of 0 to 2.5 mol % based on Mn, wherein the lithium manganate particles have a sulfur content of not more than 100 ppm.

Abstract: Positive electrode active material particle powder includes lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape in which each (111) plane thereof is adjacent to at least one (100) plane thereof.

Abstract: According to the present invention, there are provided lithium titanate particles which exhibit an excellent initial discharge capacity and an enhanced high-efficiency discharge capacity retention rate as an active substance for non-aqueous electrolyte secondary batteries and a process for producing the lithium titanate particles, and Mg-containing lithium titanate particles.

Abstract: Positive electrode active material particle powder includes: lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 ?m to 20 ?m, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape having at least one (110) plane that is adjacent to two (111) planes.

Abstract: An object of the present invention is to provide positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in D.C. resistance characteristics under low-temperature conditions and a process for producing the provide positive electrode active substance particles, and a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising lithium composite oxide particles having a layered rock salt structure which are chemically reacted with at least Li and comprise at least one element selected from the group consisting of Ni, Co and Mn, and tungsten oxide particles, in which W is present in an amount of 0.1 to 4.0 mol % based on a total molar amount of Ni, Co and Mn in the lithium composite oxide particles, and the tungsten oxide particles have an average secondary particle diameter of 0.1 to 3.0 ?m.

Abstract: The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising an oxide having a spinel structure and comprising at least Li and Mn as main components and an oxide comprising at least Li and Zr, in which the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide comprising at least Li and Zr in the positive electrode active substance particles is 0.1 to 4% by weight. The present invention provides positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in high-temperature characteristics and a process for producing the positive electrode active substance particles, and a non-aqueous electrolyte secondary battery.