▎ 摘　　要

NOVELTY - A positive electrode active material comprises lithium transition metal oxide and a coating layer containing graphene oxide and boron and is formed on the lithium transition metal oxide. USE - Positive electrode active material used for forming positive electrode used in lithium secondary battery (all claimed). Uses include but are not limited to electric vehicles, mobile phone, notebook computer, digital camera, power storage system, plug-in hybrid electric vehicle and hybrid electric vehicle. ADVANTAGE - The active material has excellent physical properties, electrical conductivity, improved coating uniformity, reduced cracks and provides secondary battery having excellent cycle characteristics and resistance increase rate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of positive active electrode material; and (2) lithium secondary battery, which comprises the positive electrode, negative electrode, separator arranged between the electrodes and electrolyte.