▎ 摘　　要

NOVELTY - Preparation of porous graphene comprises oxidizing graphite raw material to prepare graphite oxide; dissolving graphite oxide in solvent ultrasonic dispersion to obtain 0.1-2 mg/ml graphene oxide solution; adding graphene oxide solution with 10-50 mass% ammonium carbonate solution; stirring and uniformly mixing to obtain graphene oxide and mixed solution of ammonium carbonate; evaporating solvent from mixed solution to obtain graphene oxide and ammonium carbonate solid mixture; and calcining solid mixture in oxygen free environment to obtain porous graphene. USE - Preparation of porous graphene. ADVANTAGE - The method has simple technique and has low cost and suitable for large-scale production. It can completely decompose ammonium carbonate into gas during calcination to obtain porous graphene product free of impurities. DETAILED DESCRIPTION - Preparation of porous graphene comprises oxidizing graphite raw material to prepare graphite oxide; dissolving graphite oxide in solvent ultrasonic dispersion to obtain 0.1-2 mg/ml graphene oxide solution; adding graphene oxide solution with 10-50 mass% ammonium carbonate solution; stirring and uniformly mixing to obtain graphene oxide and mixed solution of ammonium carbonate, in which volume ratio of graphene oxide solution with ammonium carbonate solution is (8-12):1; evaporating solvent from mixed solution to obtain graphene oxide and ammonium carbonate solid mixture; and calcining solid mixture in oxygen free environment to obtain porous graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a process for preparing porous graphene (Drawing includes non-English language text).