▎ 摘　　要

NOVELTY - Preparation of nickel nanoparticle-graphene-foam nickel composite material involves heat-treating foamed nickel in quartz tube, annealing, adding methane and hydrogen to grow graphene, rapidly reducing, cooling to room temperature to obtain foam nickel material covered with graphene to form graphene-foam nickel base material and carrying out current deposition using graphene-foam nickel base material as working electrode, platinum as counter electrode, silver-silver chloride as reference electrode and nickel sulfate-sulfuric acid mixed solution as electrolyte. USE - Preparation of nickel nanoparticle-graphene-foam nickel composite material used in catalysis, sensor, supercapacitor, batteries and dye adsorption applications. ADVANTAGE - The method enables simple preparation of nickel nanoparticle-graphene-foam nickel composite material. The nickel nanoparticles are uniform in size and stably distributed on the surface of the graphene-based foam nickel matrix material, and do not agglomerate easily. DETAILED DESCRIPTION - Preparation of nickel nanoparticle-graphene-foam nickel composite material involves washing foam nickel with acetone, ethanol and deionized water to remove surface oxide layer, drying, heat-treating foamed nickel in quartz tube, annealing, adding methane and hydrogen to grow graphene, rapidly reducing, cooling to room temperature to obtain foam nickel material covered with graphene to form graphene-foam nickel base material and carrying out current deposition using graphene-foam nickel base material as working electrode, platinum as counter electrode, silver-silver chloride as reference electrode and nickel sulfate-sulfuric acid mixed solution as electrolyte.