▎ 摘　　要

NOVELTY - The preparation of porous three-dimensional graphene electrode involves preparing aqueous dispersion of graphene oxide by dispersing graphite oxide powder in deionized water, ultrasonically peeling, obtaining uniform aqueous dispersion of graphene oxide, adding graphene oxide solution to 84-86 %mass hydrazine monohydrate solution, maintaining at high temperature and room temperature and polymerizing to obtain aqueous graphene polymer, freeze-drying graphene polymer at -52 to -48 degrees C for 24-48 hours, and using three-dimensional porous graphene as electrode. USE - Preparation of porous three-dimensional graphene electrode (claimed). ADVANTAGE - The method enables preparation of porous three-dimensional graphene electrode with excellent mechanical strength, large specific surface area and superior performance. DETAILED DESCRIPTION - The preparation of porous three-dimensional graphene electrode involves preparing aqueous dispersion of graphene oxide by dispersing certain amount of graphite oxide powder in deionized water, ultrasonically peeling, obtaining uniform aqueous dispersion of graphene oxide in dispersion concentration of 4-6 g/l, performing graphene polymerization by adding graphene oxide solution to 84-86 %mass hydrazine monohydrate solution, where mass of hydrazine monohydrate is 1.8-2.2 times of the mass of graphene oxide, maintaining at high temperature and room temperature to obtain aqueous graphene polymer, freeze-drying aqueous graphene polymer at -52 to -48 degrees C for 24-48 hours, and using three-dimensional porous graphene as electrode directly or after cutting.