▎ 摘　　要

NOVELTY - Flexible graphene film is claimed. The graphene film is mutually jointed by a graphene sheet folds, and has crystallinity of less than 60%. USE - Used as flexible graphene film . ADVANTAGE - The film has improved flexibility and simple preparation method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing flexible graphene film comprising (i) dispersing graphene oxide in good solvent to obtain graphene oxide solution having concentration of 5-40 mg/ml, and scraping to obtain oxidized graphene liquid film, (ii) immersing oxidized graphene liquid film in poor solvent for 1-24 hours and then gelatinizing to obtain oxidized graphene gel film, (iii) drying the oxidized graphene gel film to obtain flexible oxidation graphene film, and (iv) reducing flexible graphene oxide film to obtain flexible graphene film.