▎ 摘　　要

NOVELTY - Preparation of three-dimensional graphene-based aerogel involves mixing graphene oxide powder with deionized water, ultrasonically dispersing to obtain an aqueous graphene oxide solution, carrying out hydrothermal reaction at 50-250 degrees C for 48 hours to obtain three-dimensional self-assembly of graphene columnar material, adding the obtained material to alcohol solution, performing replacement reaction, and freeze-drying at -70 degrees C to -50 degrees C for 12-27 hours. The alcohol solution is chosen from tert-butyl alcohol, ethylene glycol, propylene glycol and butylene glycol. USE - Preparation of three-dimensional graphene-based aerogel used as electrode material for fuel cell, lithium-ion battery and supercapacitor, and filler material for composite material. ADVANTAGE - The method enables preparation of three-dimensional graphene-based aerogel with high specific surface area, reduced energy consumption, and excellent dispersibility, operability and stability, by simple method.