Abstract: A graphene copper composite material preparation method based on a combination of hot pressing sintering and chemical vapor deposition, comprising: presetting multi-layer copper foil in a hot pressing chamber; preparing a graphene thin film on the surface of the copper foil by means of a chemical vapor deposition method to obtain a graphene copper composite material; and then performing hot pressing forming on the multi-layer graphene copper foil material to prepare the graphene copper composite material. Said material can replace a traditional copper material or silver material, is applied to a supercapacitor or a motor driving device, and has the effects of improving efficiency, reducing temperature rise, etc.

Abstract: The present invention relates to a composite material for improving metal conductivity and a method of preparing the same. The composite material includes a composite of n A-B-A structures, where A is a graphene fragment layer, B is a metal foil layer, and n is an integer greater than or equal to 2; and the graphene fragment layer includes graphene fragments uniformly laid flat on the metal foil layer. The conductivity of the conventional metal material is increased by at least 18%, and the conductivity of the conventional metal material in a bending state remains almost the same as in a normal state.