Cathode active material for secondary battery

摘要

Disclosed is a cathode active material for secondary batteries comprising, a compound having a transition metal layer containing lithium as at least one compound selected from the following Formula 1: Li(Li3x±yM1-yPx)O2+z (1) wherein M is an element stable for a six-coordination structure, which is at least one selected from transition metals that belong to the first and second period elements; 0y is satisfied in a case of 3x-y.