▎ 摘　　要

NOVELTY - The preparation method of supercritical carbon dioxide-graphene porous material involves selecting graphene oxide as raw material, grafting graphene oxide with concentrated sulfuric acid for functionalization, washing functionalized graphene oxide with water to remove concentrated sulfuric acid, then adding ethanol solution to prepare sol, adding sol to preparing tank, installing preparing tank on a preparing device, dissolving sol in ethanol, discharging, adding nitrogen to preparing tank, removing residual ethanol and blowing. USE - The method is useful for preparing supercritical carbon dioxide-graphene porous material (claimed).