| abstract |
(57) [Summary]nPROBLEM TO BE SOLVED: To improve characteristics of long life, high capacity, structural stability. A positive electrode active material for a lithium secondary battery is provided.n[Solution] Li a Ni 1-xy Co x M y O Two , Li a Ni 1-xy Co x M y O 2-z F z And Li a Ni 1-xy Co x M y O 2-z S z (M = Al, Mg, S r, La, Ce, V, Ti, x = 0 to 1, y = 0.01 -0.1, z = 0.01-0.1, a = 1.00-1. A compound selected from the group consisting of 1), Lich characterized by being coated with a metal oxide Active material for secondary batteries. |