▎ 摘　　要

NOVELTY - The preparation method of plant cellulose-graphene-based flexible film involves adding 1-ethyl-3-methylimidazolium acetate into a container, heating, stirring, adding dry plant cellulose, stirring, adding graphene powder, and stirring to obtain casting solution, uniformly scraping and coating the casting solution on a PTFE plate, spraying water to the casting solution during process of scraping and coating to regenerate cellulose film, taking off the film, placing in water for curing treatment, vacuum drying, distilling the waste solution, and recycling the ionic solution. USE - Preparation method of plant cellulose-graphene-based flexible film. ADVANTAGE - The method enables preparation of plant cellulose-graphene-based flexible film with shortened film-forming time and effectively reduced flocculation of graphene. DETAILED DESCRIPTION - The preparation method of plant cellulose-graphene-based flexible film involves (1) weighing 1-ethyl-3-methylimidazolium acetate, adding into a container, heating, magnetically stirring, adding dry plant cellulose, continuously stirring, adding graphene powder, and continuously stirring to obtain casting solution, (2) taking the casting solution, uniformly scraping and coating on a PTFE plate by a scraper, spraying water to the casting solution during process of scraping and coating to regenerate cellulose film, and (3) taking off the film from the PTFE plate, placing in water for curing treatment, vacuum drying to obtain the product, distilling the waste solution under reduced pressure, and recycling the ionic solution.