▎ 摘　　要

NOVELTY - Preparing porous graphene film involves: (1) adding graphene to absolute ethanol, stirring uniformly, then adding polyvinylpyrrolidone and ultrasonically dispersing to form a graphene dispersion; (2) adding polyamide to the graphene dispersion and then adding thickener under stirring to form a reaction solution; (3) adding the reaction liquid to a vacuum distillation reaction kettle to carry out vacuum distillation reaction for 1-4 hours to obtain a preformed liquid; (4) adding the preformed liquid to an electrospinning device to carry out electrospinning reaction for 2-5 hours to obtain mixed graphene fiber, and mixing the mixed graphene fiber to obtain a mixed graphene thin film; and (5) adding the mixed graphene thin film to a methanol solution to carry out sealed aeration reaction for 2-4 hours, then taking out the film, washing and drying to obtain the product. USE - The method is useful for preparing porous graphene film. ADVANTAGE - The method enables economical and large-scale industrial preparation of porous graphene film with strong operability.