▎ 摘　　要

NOVELTY - Preparing porous carbon graphene composite material comprises (i) adding super absorbent resin into ultrasonic-treated graphene oxide solution, then freezing and molding, (ii) freezing and drying under the vacuum environment to obtain super absorbent resin-graphene oxide composite material, (iii) orderly carbonizing the obtained composite material at 500-1000 degrees C under the protection atmosphere, then washing, drying to constant weight and grinding to obtain final product. USE - The method is useful for preparing porous carbon graphene composite material. ADVANTAGE - The method has simple process, no toxic and harmful solvents, and high efficiency; and is environmentally friendly; and increases the electrical conductivity and specific surface area of porous carbon, and improves the reaction activity and reaction rate.