▎ 摘　　要

NOVELTY - A carbon-based composite material preparing method involves preparing polyacrylonitrile/polymethyl methacrylate hydroxyapatite shell structure, which is mixed with graphene oxide, filtered and dried to obtain graphene oxide/polyacrylonitrile/polymethyl methacrylate. The graphene oxide/polyacrylonitrile/polymethyl methacrylate is subjected to high temperature carbonizing, removed polymethyl methacrylate and reduced to obtain reduced-graphene oxide/polyacrylonitrile and activated by potassium hydroxide to obtain porous reduced-graphene oxide/polyacrylonitrile composite material. USE - Method for preparing carbon-based composite material. ADVANTAGE - The method enables preparing the carbon-based composite material with effectively preventing the graphene stack and improving the effective specific surface area and electrical in simple, cost-effective and eco-friendly manner.