▎ 摘　　要

NOVELTY - Copper-graphene composite is prepared by fully oxidizing graphite by strong oxidant; fixing copper sheet on lifting and pulling machine to obtain graphene oxide cladding layer on copper surface; soaking copper sheet after lifting and pulling in graphene oxide solution; and fully reacting in hydrazine hydrate. USE - Copper-graphene composite. ADVANTAGE - The copper-graphene composite uses oxidoreduction method and pulling method to prepare graphene film on copper surface. The oxidoreduction method has easy principle, simple operation, low cost and produces more graphene; while pulling method is performed using simple devices at low investment. The method provides high-property film with high degree of uniformity of film coating, uniform film particles, good activity, and simple operation. It is capable of preparing film with complex shape and large area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of copper graphene composite.