Patent ID: 7393476
Filing Date: 2008-07-01
Classification: B82Y,C01G,C01P,H01M,Y02E

Abstract:
1. A positive active material for lithium secondary batteries, comprising: a composite oxide comprising: wherein a, b, and c are values within such a range that in a ternary phase diagram showing the relationship among these, (a, b, c) is present on the perimeter of or inside the quadrilateral ABCD defined by point A (0.5, 0.5, 0), point B(0.55, 0.45, 0), point C (0.55, 0.15, 0.30), and point D(0.15, 0.15, 0.7) as vertexes, and 0.95<x/(a+b+c)<1.35.