| 摘要 |
A lithium/nickel/cobalt/manganese-containing composite oxide powder represented by the formula LipNixCoyMnzMqO2-aFa (wherein M is at least one element selected from the group consisting of Al, Ge, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9≦̸p≦̸1.1, 0.2≦̸x≦̸0.5, 0.2≦̸y≦̸0.5, 0.1≦̸z≦̸0.4, 0≦̸q≦̸0.5, 1.9≦̸a≦̸2.1, p+x+y+z+q=2, and 0≦̸a≦̸0.02), characterized in that when the powder is classified into small particle size-classified particles with an average particle size 2 μm≦̸D50≦̸8 μm and large particle size-classified particles with an average particle size of 10 μm≦̸D50≦̸75 μm, the ratio of (% by weight of the small particle size-classified particles)/(% by weight of the large particle size-classified particles) is from 15/85 to 40/60. |
