CATHODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING SAME

Disclosed herein is a method for efficiently producing a cathode active material for a lithium ion secondary battery excellent in battery performance such as initial discharge capacity. The cathode active material for a lithium ion secondary battery is produced from spherical particles made of a lithium nickel cobalt composite oxide represented by a general formula: LiNiCoMO(wherein M is at least one element selected from among Mn, V, Mg, W, Mo, Nb, Ti, and Al and x, y, and z satisfy 0