▎ 摘 要
NOVELTY - Metal salt and graphene oxide are subjected to salt precipitation method, such that graphene oxide is reduced to graphene. The precipitated salt is converted to metallic materials which constitute the matrix. The obtained metallic material is inserted into the sheet of graphene to obtain graphene-metal composite material. USE - Preparation of graphene-metal composite material (claimed). ADVANTAGE - The method efficiently provides graphene-metal composite material having high hardness.