Cathode Active Material for Lithium Secondary Battery and Lithium Secondary Battery Including the Same

原文（中国語）

Embodiments of the present disclosure provide a cathode active material for a lithium secondary battery. The cathode active material for a lithium secondary battery includes lithium-transition metal oxide particles having a nickel oxidation number ratio of 0.24 to 0.98, as defined by Equation 1. By adjusting the nickel oxidation number ratio of the lithium-transition metal oxide particles, a lithium secondary battery with improved cycle life characteristics and capacity characteristics may be provided.