▎ 摘　　要

NOVELTY - Positive electrode active material for a lithium secondary battery comprises a lithium transition metal oxide having a coating layer derived from crumpled graphene. The crumpled graphene has a thickness of 0.1-10 nm. USE - As positive electrode active material for a lithium secondary battery. ADVANTAGE - The positive electrode active material adopts a thin and uniform crumpled graphene-derived coating layer effectively imparts electrical conductivity to the lithium transition metal oxide, when the positive electrode active material is applied to a lithium secondary battery, the lithium secondary battery has enhanced performance, particularly high discharge capacity at C-rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method of manufacturing the positive electrode active material involving forming a crumple graphene-derived coating layer on the lithium transition metal oxide by coating the crumple graphene on a lithium transition metal oxide, where the crumple graphene has the thickness of 0.1-10 nm.