▎ 摘　　要

NOVELTY - A graphene composite coating-coated metal plate comprises pure metal layer, graphene layer and atomic layer deposition film, sequentially arranged on a metal plate. USE - Graphene composite coating-coated metal plate is used for fuel cell. ADVANTAGE - The graphene composite coating reduces contact resistance between the metal plate and gas-diffusion layer in the fuel cell. The graphene composite coating-coated metal plate has excellent mechanical performance, electroconductivity, corrosion resistance and durability in acidic environment. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene composite coating-coated metal plate.