▎ 摘　　要

NOVELTY - Porous macroscopic carbon material based on graphene, comprises (in wt.%) graphene (60-99) and carbon (40-1) from polyvinyl alcohol. The specific surface area of the material is 500-2600 m2/g, the pore volume is 0.35-2.62 cm3/g, and the apparent density is 12-35 mg/cm3. USE - Used as a porous macroscopic carbon material based on graphene. ADVANTAGE - The porous macroscopic carbon material: is simple to prepare with wide raw material source; and is prepared into pore structure with good stability and large specific surface area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the porous macroscopic carbon material based on graphene, comprising (i)adding oxidized graphene into de-ionized water, and ultrasonically dispersing to obtain oxidized graphene aqueous solution with concentration of 0.3-6 mg/ml; (ii) according to mass ratio of the oxidized graphene to polyvinyl alcohol of 1: 0.01-0.6, adding the polyvinyl alcohol solution into the oxidized graphene aqueous solution, ultrasonically treating the mixed solution for 30 minutes-2 hours, and uniformly mixing; (iii) placing the mixed solution into a hydro-thermal reaction kettle, reacting for 1-20 hours at 100-220 degrees C for removing aqueous phase to obtain graphene-based hydrogel, freezing at -20 to -60 degrees C for drying the graphene-based hydrogel to obtain graphene-based aerosol; (iv) under the protection of argon atmosphere, raising the temperature to 200-300 degrees C at rate of 5-10 degrees C per 1 minute, thermally treating for 1-3 hours at constant temperature, then raising the temperature to 800-1100 degrees C at rate of 5-10 degrees C per 1 minute, then thermally treating for 2-6 hours at constant temperature, and cooling.