POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING SAME

摘要

The present invention provides a positive electrode active material having one or more compounds selected from Chemical Formula 1, and a lithium secondary battery comprising the same, that exhibits excellent stability and that can improve lifespan and rate properties. Li[LixMyM'(1-x-y)]O2-zAz (1) Where M is one or more selected from the group consisting of Ru, Mo, Nb, Te, Re, Ir, Pt, Cr, S, W, Os, and Po; M' is one or more selected from the group consisting of Ni, Ti, Co, Al, Mn, Fe, Mg, B, Cr, Zr, Zn and the second period transition metals; A is a -1 or -2 charged negative ion; and 0