▎ 摘　　要

NOVELTY - The preparation method of edge carboxylated graphene and graphene involves placing graphite powder in a reaction grinding equipment, sealing the equipment, then rushing carbon dioxide gas into reaction grinding equipment, starting grinding for a period of time to obtain edge carboxylated graphene, burning and reducing edge carboxylated graphene in the presence of inert gas to obtain graphene. USE - The method is useful for preparing edge carboxylated graphene and graphene. ADVANTAGE - The method enables economical preparation of edge carboxylated graphene and graphene with reduced energy consumption, high quality and electrical conductivity and large specific surface area in an environmentally-friendly manner.