▎ 摘　　要

NOVELTY - The utility model claims a graphene composite cathode structure, comprising a cathode current collector, which is vertically provided with a graphite supporting member spaced apart from one another, the graphene support is further covered with a silicon coating, in the gap between the graphite support member is filled with the liquid electrolyte, the graphene support is made of nanometre sheet; generating volume expansion when the lithium and silicon coating by graphene composite cathode of the utility model, the interval of graphene support provides the volume expansion of the space. between the expanded silicon coating does not contact, keeping original physical position of the cathode structure, maintaining the corresponding chemical performance and prevent deterioration of the material, at the same time, the whole process in the silicon coating is always kept in contact with the graphene material, the whole process in electrical conduction, does not need the adhesive material and the additional conductive material, reduces the cost and increases the energy stored per unit mass, worthy for reference.