| 摘要 |
PROBLEM TO BE SOLVED: To obtain a positive electrode active material for use in a lithium secondary battery of high capacity and high safety that has a broad usable voltage area and good durability of charge and discharge cycle. SOLUTION: A lithium containing transition metal composite oxide represented by the general formula Lia Nix Coy Mnz Mp O2 , wherein 1,00<=a<=1.20, 0.20<=x<0.50, 0.20<Y<=0.45, 0.20<=z<=0.05, 0.001<=p<=0.05, x+y+z+p=1, and M is a metal selected from either the 4 (4a) group or the 5 (5b) group in the periodic table, is used for the positive electrode active material for use in a lithium secondary battery. |
