▎ 摘　　要

NOVELTY - The method involves providing oxidation natural crystalline flake graphite to prepare a graphite oxide plug. Ultrasonic treatment is performed for preparing graphene oxide solution. The graphene oxide solution is uniformly coated on a metal surface. A metal foil is soaked in the graphene oxide solution. A metal foil and graphene composite electrode is obtained by heat treatment process. USE - Preparation method for a metal foil and graphene composite electrode sheet that is utilized for a battery. ADVANTAGE - The method enables preparing the composite electrode sheet in a simple manner, reducing resistance of metal and graphite oxide composite electrode sheet and effectively improving the power density of a battery. The method enables large-scale industrial preparation of the electrode sheet. DESCRIPTION OF DRAWING(S) - The drawing shows a photograph of a metal foil and graphene composite electrode sheet.