▎ 摘　　要

NOVELTY - Preparing porous graphene material comprises (i) dispersing graphite oxide powder in water by ultrasonic stripping to obtain aqueous graphene oxide solution, dissolving metal ion-containing compound in water to obtain aqueous solution of metal ion-containing compound, (ii) mixing the two solutions of step (i), and removing the liquid to obtain solid, (iii) raising solid temperature at 600-1000 degrees C for 1-4 hours under inert gas, and (iv) performing acid treatment, washing to neutral, and drying to obtain porous graphene material. USE - The method is useful for preparing porous graphene material. ADVANTAGE - The porous graphene material has controlled porosity and pore diameter; and meets different usage requirements. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for porous graphene material obtained by above method.