Patent ID: 7981546
Filing Date: 2011-07-19
Classification: C01G,C01P,H01B,H01M,Y02E

Abstract:
1. A positive electrode active material for a non-aqueous electrolyte secondary battery, said positive electrode active material comprising a lithium-containing composite oxide represented by the formula 1: Li x Ni 1-y-z-v-w Co y Al z M 1 v M 2 w O 2 , wherein the element M the element M said formula 1 satisfies 0.97≦x≦1.1, 0.05≦y≦0.35, 0.005≦z≦0.1, 0.0001≦v≦0.05, 0.0001≦w≦0.05, 0.1≦v/w≦10 and 2≦w1/w2≦20, said composite oxide comprises primary particles, said primary particles forming secondary particles, said primary particles have a mean particle size of 0.1 μm or more and 3 μm or less, and said secondary particles have a mean particle size of 8 μm or more and 20 μm or less.