POSCO Holdings Inc.
CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Abstract:

The present disclosure relates to a cathode active material for a lithium secondary battery, a preparation method therefor, and a lithium secondary battery comprising same, and the cathode active material includes a lithium nickel cobalt manganese-based oxide represented by Chemical Formula 1 including secondary particles obtained by agglomerating at least one primary particle, and a metal oxide particles having a nano-sized average diameter (D50) and disposed inside the secondary particles. Li.sub.a[Ni.sub.xCo.sub.yMn.sub.z].sub.tM.sub.1-tO.sub.2-pX.sub.p. [Chemical Formula 1]