Patent ID: 7517613
Filing Date: 2009-04-14
Classification: H01M,Y02E,Y02T

Abstract:
1. A positive electrode material for a nonaqueous lithium secondary battery, said positive electrode material comprising a complex oxide having a layered structure expressed by a chemical formula Li a Mn x Ni y Co z O 2 (0≦a≦1.2, 0.1≦x≦0.9, 0≦y≦0.44, 0.1≦z≦0.6, x+y+z=1), wherein a diffraction peak intensity ratio between the (003) plane and the (104) plane (I(003)/I(104)) in an X-ray powder diffractometry using a Cu—Kα line in the X-ray source is not less than 1.2 and not more than 1.4.