▎ 摘　　要

NOVELTY - A graphene aerogel modified fuel cell proton exchange membrane preparation method involves uniformly dispersing a graphite oxide in a mixed solution of ethanol and water to prepare a slurry, adding ethylenediamine, reducing and stripping the graphite oxide by ethylenediamine to obtain graphene hydrogel. The graphene hydrogel is dried, subjected to uniformly disperse the graphene hydrogel using ammonia gas, followed by stacking and assembling of the particles and removing the solvent by filtration to obtain a granular shape graphene aerogel, followed by ultrasonically dispersing the graphene aerogel in an ethanol solution to prepare a solution-1, ultrasonically dispersing the perfluorosulfonic acid resin particles in an ethanol solution to prepare a solution-2, coating the solution-1 on the surface of the substrate, heating, coating the solution 2, drying, placing in a vacuum furnace to carry out heat treatment and removing the base material to obtain a finished product. USE - Method for preparing graphene aerogel modified fuel cell proton exchange membrane. ADVANTAGE - The method enables preparing graphene aerogel modified fuel cell proton exchange membrane with better effect of inhibiting the swelling of the perfluorosulfonic acid membrane layer, enhanced mechanical strength and stability, and increased conductivity. DETAILED DESCRIPTION - A graphene aerogel modified fuel cell proton exchange membrane preparation method involves uniformly dispersing a graphite oxide in a mixed solution of ethanol and water to prepare a slurry, adding ethylenediamine, raising the temperature and carrying out the reaction, reducing and stripping the graphite oxide by ethylenediamine to obtain graphene hydrogel. The graphene hydrogel is dried under a freezing condition, subjected to uniformly disperse the graphene hydrogel using ammonia gas, followed by stacking and assembling of the particles and removing the solvent by filtration to obtain a granular shape graphene aerogel, followed by ultrasonically dispersing the graphene aerogel in an ethanol solution to prepare a solution-1, ultrasonically dispersing the perfluorosulfonic acid resin particles in an ethanol solution to prepare a solution-2, coating the solution-1 on the surface of the substrate, heating, coating the solution 2 continuously after the solution is evaporated to dryness, coating repeatedly for 3-6 times, drying the surface of the base material, placing in a vacuum furnace to carry out heat treatment and removing the base material to obtain a finished product.