▎ 摘　　要

NOVELTY - Preparation of interfacial self-assembly sulfonated graphene film comprises loading deionized water in beaker; pouring upper layer organic solvent in deionized water to form oil-water system with oil-water interface; injecting sulfonated graphene solution into oil-water system to remove oil from system and to expose sulfonated graphene film solution; immersing target substrate vertical into sulfonated graphene film solution; transferring sulfonated graphene film; and drying to obtain interfacial self-assembly sulfonated graphene film. USE - Preparation of interfacial self-assembly sulfonated graphene film used as transparent electric conduction thin film or super capacitor thin film. ADVANTAGE - The method produces interfacial self-assembly sulfonated graphene film has specific capacitance of 292 F/g at sweep rate of 2 mV/s, and has specific capacitance decreased by 1.9%, thus film has good cycle life performance.