Mn-rich Mn-rich cathode active material with surface treatment for high-voltage and high-capacity lithium secondary battery and High-voltage and high-capacity lithium secondary battery comprising the same

摘要

The present invention relates to a surface-coated Mn-rich cathode active material for a high-capacity high-voltage lithium secondary battery with reduced phenomenon of being cracked or broken even after the rolling process, and a high-capacity high-voltage lithium secondary battery comprising the same.