▎ 摘　　要

NOVELTY - The preparation of cathode of graphene battery, involves coating aqueous solution of graphene oxide on copper foil cleaned with deionized water, drying to obtain graphene oxide film, using high-energy ray for irradiation, reducing graphene oxide to graphene, cleaning the residual graphene oxide, an drying. USE - Preparation of cathode of graphene battery (claimed). ADVANTAGE - The method enables preparation of graphene battery cathode with high efficiency, high conductivity and high temperature stability.