| 摘要 |
PROBLEM TO BE SOLVED: To provide a new method for producing a hexagonal lithium cobalt composite oxide for a lithium secondary battery, excellent in a high temperature storage stability, a cyclic characteristic, a weight capacity density, a volume capacity density, safetiness, and an easy mass-production. SOLUTION: An oxy-hydroxy cobalt powder having a weight average particle diameter of 1-20 μm and a specific surface area of 2-200 m<2> /g, and a lithium carbonate powder having a weight average particle diameter of 1-50 μm and a specific surface area of 0.1-10 m<2> /g are mixed and the mixture is calcined in an oxygen-containing atmosphere, thus producing the hexagonal lithium cobalt composite oxide for the lithium secondary battery, having a weight average particle diameter of 5-15 μm, a specific surface area of 0.15-0.60/gm<2> and an alkali content of <0.03 wt.%. |
