▎ 摘　　要

NOVELTY - A surface-modified graphene comprises a graphene powder and at least one surface modification layer which comprises a surface modifier including at least two functional groups respectively formed at two ends of the surface modifier. One of the two functional groups is chemically bonded to the organic functional group on the surface of the graphene powder, and the other of the two functional groups is formed on the surface of the surface-modified graphene, wherein the surface modifier comprises at least one of a coupling agent, a fatty acid and a resin. Therefore, the surface-modified graphene powder can increase the dispersivity of the graphene powder in the solvent and increase the affinity between the graphene powder with organic polymer. In addition, the composite material can be made sturdier to provide wide applicability thereto.