▎ 摘　　要

NOVELTY - Preparing membrane electrode involves (a) pretreating commercial Nafion (RTM: Sulfonated tetrafluoroethylene based fluoropolymer-copolymer) membrane or proton exchange membrane to obtain a bottom membrane of the membrane electrode, (b) dissolving the graphene slurry in the solvent, ultrasonically dispersing, coating the solution on the bottom membrane to obtain the bottom membrane containing graphene, (c) dissolving the platinum precursor, inorganic acid, ion liquid dissolved in the deionized water, preparing electro-deposition liquid, (d) taking the bottom surface containing graphene as the cathode in the electro-chemical deposition device, using titanium coated platinum screen as an anode, electrifying and depositing, washing the bottom substrate and drying to obtain film electrode, and (e) taking Nafion (RTM: Sulfonated tetrafluoroethylene based fluoropolymer-copolymer) solution and isopropanol, coating the surface of the membrane electrode and washing and drying. USE - The electrode is useful in electrolytic water and hydrogen fuel cell (claimed). ADVANTAGE - The method: has simple process and easy operation; improves the interface between the proton exchange membrane and catalyst; has high electro-deposition efficiency; can improve the preparation method of the membrane electrode performance and has large the catalyst amount and easy process of hot pressing to make the membrane dehydration deformation; achieves high dispersion of platinum micro-nano particles on graphene; achieves the effect of maintaining catalyst activity and reducing dosage; has strong adsorption capacity; can change the electrochemical characteristics of the electrode and the solution interface; increases the electrodeposition current efficiency and improves the electrocrystallization conditions.