Patent ID: 7592100
Filing Date: 2009-09-22
Classification: H01M,Y02E

Abstract:
1. A positive electrode active material for a non-aqueous electrolyte battery, comprising crystalline particles of a lithium-containing oxide containing two kinds of transition metal elements, said crystalline particles having a layered crystal structure, and oxygen atoms constituting said lithium-containing oxide forming a cubic closest packing structure, and said two kinds of transition metal elements are nickel element and manganese element, wherein said lithium-containing oxide contains said two kinds of transition metal elements in substantially the same proportion, and said lithium-containing oxide is expressed by formula (3): where A and B are said two kinds of transition metal elements, C is at least one kind of an added element different from A and B, a mixture of crystalline particles of said lithium-containing oxide having a particle size of 0.1 to 2 μm and secondary particles of said crystalline particles having a particle size of 2 to 20 μm, and said transition metals are uniformly dispersed in said crystalline particles.