▎ 摘　　要

NOVELTY - A graphene film used in e.g. super capacitor, comprises 60-95 parts mass graphene and 5-40 parts mass PTFE. USE - Graphene film used in super capacitor and capacitive deionization. ADVANTAGE - The graphene film has high mechanical properties and high electrochemical properties, and realizes a large area. The method enables preparation of graphene film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for continuous preparation of graphene film, which involves dissolving PTFE concentrated dispersion liquid in ethanol and stirring to obtain 0.2-5.0 wt.% PTFE dispersion, ultrasonically dispersing graphene in deionized water or ethanol to obtain 0.1-3.0 wt.% graphene dispersion, mixing PTFE dispersion and graphene dispersion, heating and stirring to obtain semi solid state, placing on the roller machine to obtain full roll film, reducing roller spacing and rolling.