▎ 摘　　要

NOVELTY - Method for preparing porous graphene involves (a) completely dissolving carbon precursor and pore-forming agent in solvent to obtain a mixed solution of carbon precursor, and (b) subjecting the mixed solution to solvent removal treatment, so that the concentration of the mixture is improved, (c) uniformly dispersing the mixture after the solvent is removed, (d) forming a film and drying the mixture uniformly on a selected substrate, (e) exposing the film obtained in step (f) under laser irradiation to obtain porous graphene, (g) exposing the film obtained in under the laser irradiation to obtain the porous graphene. USE - Super capacitor electrode material based on porous graphene. ADVANTAGE - The super capacitor electrode material has larger specific surface area, more active sites, after assembling the super capacitor can have larger specific capacitance, providing reference for the existing porous material preparing super capacitor. DESCRIPTION OF DRAWING(S) - The drawing shows a thermogravimetric analysis of the phenolic resin film prepared in the preparation method of porous graphene. 1Mol/l sulphuric acid solution as electrolyte 100Mm of polyvinyl butyral adding amount of capacitance maximum