▎ 摘　　要

NOVELTY - Preparation of graphene/carbon composite material comprises mixing natural compound and graphene oxide suspension, transferring into autoclave reactor to carry out high-temperature hydrothermal reaction for 30 minutes to 12 hours, and water-cooling to room temperature to obtain sandwich-type graphene composite; and high-temperature heating for 30 minutes to 12 hours under inert gas protective atmosphere. USE - Method for preparation of graphene/carbon composite material used for preparing capacitor, electrode material, or absorbing material (claimed). ADVANTAGE - The method is very easy to operate, environment-friendly, easy to get raw materials used, and suitable for large-scale preparation, and has broad application prospects.