▎ 摘　　要

NOVELTY - Preparation of graphene supported tin doped cobalt disulfide composite material comprises mixing tin salt in aqueous solution of soluble cobalt salt and vulcanizing agent, adding graphene aqueous solution, performing hydrothermal reaction of mixed solution at 80-360 degrees C, cooling and freeze-drying. USE - The method is for preparation of graphene supported tin doped cobalt disulfide composite material. ADVANTAGE - The cobalt disulfide matrix adheres to surface of graphene, improves ion conduction effect. The composite suppresses volume effect in the process of charge and discharge and improves rate performance and cycle performance.