POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING SAME

摘要

The present invention relates to a positive electrode active material for a lithium secondary battery and a lithium secondary battery including the same and, more particularly, to a positive electrode active material for a lithium secondary battery and a lithium secondary battery including the same, the positive electrode active material having a layered structure and comprising a core layer, a concentration gradient layer having an adjusted thickness on the outer periphery of the core layer, and a surface layer, wherein lithium ion diffusion paths formed within a primary particle and a secondary particle have an orientation in a specific direction.