▎ 摘　　要

NOVELTY - Preparing graphene composite material involves immersing a graphite rod in an inorganic salt solution so that the graphite rod is sufficiently wetted. The graphite rod is taken as an anode, the platinum sheet electrode as a cathode and salt solution as electrolyte into an electrolytic cell system. The constant voltage between cathode and anode for electrochemical stripping is applying. The electrolyte solution is centrifuged and the upper layer liquid is taken to obtain an aqueous solution of graphene/tin oxide composite. USE - Method for preparing graphene composite material used as anode in lithium ion battery (claimed). ADVANTAGE - The method enables to prepare graphene composite material, used in lithium ion battery, which has good heat dissipation performance and stability. DETAILED DESCRIPTION - Preparing graphene composite material involves immersing a graphite rod in an inorganic salt solution so that the graphite rod is sufficiently wetted. The graphite rod is taken as an anode, the platinum sheet electrode as a cathode and salt solution as electrolyte into an electrolytic cell system. The constant voltage between cathode and anode for electrochemical stripping is applying. The electrolyte solution is centrifuged and the upper layer liquid is taken to obtain an aqueous solution of graphene/tin oxide composite. The graphene composite material is obtained after filtering the aqueous solution of the graphene/tin oxide composite. The inorganic salt solution is selected from the sodium stannate solution and potassium stannate solution.