▎ 摘　　要

NOVELTY - Preparing graphene/copper composite material comprises (i) preparing graphene/copper composite deposition solution using 2-mercaptobenzimidazole, chlorine ions and janus green (JGB) as additives, (ii) using metallographic sandpaper to polish anode copper plate and cathode titanium plate, removing oil stains and oxide films, and activating plates with 10% dilute hydrochloric acid solution for 5-20 minutes, (iii) carrying out alternate electrodeposition in deposition solution by pulse electrodeposition method, i.e. firstly depositing in deposition solution containing 2-mercaptobenzimidazole and chlorine ions for 10 minutes, then depositing for 10 minutes in deposition solution containing janus green, cycling twice, and depositing for 40 minutes altogether to obtain high-intensity high-thermal-conductivity graphene/copper composite coating, and (iv) performing asynchronous rolling and recrystallization annealing on electrodeposited coating. USE - The method is useful for preparing graphene/copper composite material in field of heat conduction (claimed). ADVANTAGE - The material: has high strength, high thermal conductivity, low roughness, 298-524 MPa tensile strength, 280-1180 W/m.k thermal conductivity, and 0.3±0.1 to 3±0.1 μm roughness, which can improve heat dissipation efficacy and meet requirements in field of heat conduction.