▎ 摘　　要

NOVELTY - Preparing flexible porous graphene film involves mixing the graphene oxide dispersion with a salt solution to obtain a salt-containing graphene oxide mixed solution, and pouring the salt-containing graphene oxide mixed solution into a mold and dry to obtain a salt-containing particle graphene oxide film. A reducing agent used to chemically reduce the salt-containing granular graphene oxide film, and then successively washed and dried to obtain a finished product. USE - Method for preparing flexible porous graphene film. ADVANTAGE - The method prepare a macroscopically continuous, flexible and porous graphene film with excellent flexibility and high mechanical strength, and film is stable in size and easy to cut, which is very suitable for large-scale promotion and use.