▎ 摘　　要

NOVELTY - The preparation of graphene foam carbon composite material involves (1) adding expanded graphite to ethanol solution, ultrasonically reacting mixed solution, drying to obtain thin layer of graphene, (2) dissolving obtained graphene with mesophase asphalt in ethanol solvent, ultrasonically reacting to obtain homogeneous solution, heating and evaporating ethanol completely, (3) ball milling graphene/mesophase asphalt mixture, and placing obtained powder sample in high temperature and high pressure reaction kettle, heating and cooling to obtain foamed carbon raw material, (4) placing foamed carbon raw material in chemical vapor deposition tube, heating and cooling to obtain carbonized foamed carbon composite, (5) adding carbonized foamed carbon into high temperature graphitization furnace, heating under protected of nitrogen gas and cooling. USE - Preparation of graphene foam carbon composite material. ADVANTAGE - The method enables preparation of graphene foam carbon composite material ensuring increased strength and enhanced performance by simple, economical and easy process. DETAILED DESCRIPTION - The preparation of graphene foam carbon composite material involves (1) adding expanded graphite to ethanol solution, ultrasonically reacting the mixed solution for 3-5 hours, drying in oven at 80 degrees C for 12 hours to obtain thin layer of graphene, (2) dissolving obtained graphene with mesophase asphalt in ethanol solvent, ultrasonically reacting to obtain homogeneous solution, heating at 80 degrees C for 24 hours and evaporating ethanol completely, (3) ball milling graphene/mesophase asphalt mixture for 12 hours, and placing obtained powder sample in high temperature and high pressure reaction kettle, heating at 500 degrees C for 3 hours under pressure of 3 MPa, after the reaction is completed, automatically cooling to room temperature to obtain foamed carbon raw material, (4) placing the foamed carbon raw material in chemical vapor deposition tube, heating at 1000 degrees C under nitrogen protection for 2 hours, naturally cooling to room temperature to obtain carbonized foamed carbon composite, (5) adding the carbonized foamed carbon into high temperature graphitization furnace, heating at 2300 degrees C for 2 hours under protected of nitrogen gas and cooling to room temperature.