Patent ID: 7998620
Filing Date: 2011-08-16
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. A positive electrode active material for a non-aqueous electrolyte secondary battery, comprising a nickel-alkali metal-containing composite oxide having cracks on the surface of primary particles, wherein the composition of the nickel-alkali metal-containing composite oxide is represented by the following general formula (I): wherein, in the formula (I), w satisfies the following relation: 0.9≦w≦1.1, x satisfies the following relation: 0<x≦0.05, y satisfies the following relation: 0=y, z satisfies the following relation: 0<z≦0.34, and Me represents Al, and wherein the primary particles have an average particle size of from 1 to 50 μm.