▎ 摘　　要

NOVELTY - A 3D coral shape graphene/nickel cobalt oxide composite material preparing method involves preparing a graphite oxide, and adding nickel and cobalt salts and alkali source in graphite oxide suspension. The obtained suspension is microwave heated, cooled and centrifugally separated. The obtained precipitate is washed with anhydrous ethyl alcohol and dried to obtain a graphite oxide/nickel-cobalt laminated double metal hydroxide composite material. The composite material is sintered in a tube-type furnace to obtain the finished product. USE - Method for preparing a 3D coral shape graphene/nickel cobalt oxide composite material that is utilized in a supercapacitor electrode. ADVANTAGE - The method enables preparing the 3D coral shape graphene/nickel cobalt oxide composite material in an economical manner with high electrical conductivity, mass transfer resistance and longer cycle life.