▎ 摘　　要

NOVELTY - Preparing high-strength and high-conductivity graphene film comprises e.g. (i) preparing graphene oxide into uniform graphene oxide aqueous solution using stirring ultrasonic method, (ii) assembling graphene oxide aqueous solution obtained in step (i) to obtain self-supporting graphene oxide film, (iii) immersing self-supporting graphene oxide film obtained in step (ii) in solution of 10,12-pentadecadiyn-1-ol in tetrahydrofuran to make 10,12-pentadecadiyn-1-ol and graphene oxide nanosheets undergo esterification reaction and taking out supported graphene oxide film from tetrahydrofuran solution and performing ultraviolet irradiation to obtain graphene oxide-10,12-pentadecadiyn-1-ol film of covalent cross-linking orientation, (iv) soaking graphene oxide-10,12-pentadecadiyn-1-ol film obtained in the step (iii) in mixed solution of hydroiodic acid and ethanol under the traction of external force, washing and drying. USE - The method is useful for preparing high-strength and high-conductivity graphene film. DETAILED DESCRIPTION - Preparing high-strength and high-conductivity graphene film comprises (i) preparing graphene oxide into uniform graphene oxide aqueous solution using stirring ultrasonic method, the graphene oxide aqueous solution comprises graphene oxide nano sheet, (ii) assembling the graphene oxide aqueous solution obtained in step (i) to obtain a self-supporting graphene oxide film, the self-supporting graphene oxide film comprises graphene oxide nano sheet of layered structure, (iii) immersing the self-supporting graphene oxide film obtained in step (ii) in a solution of 10,12-pentadecadiyn-1-ol in tetrahydrofuran to make the 10,12-pentadecadiyn-1-ol and graphene oxide nanosheets undergo an esterification reaction and then taking out the supported graphene oxide film from tetrahydrofuran solution and performing ultraviolet irradiation under the protection of inert gas to obtain graphene oxide-10,12-pentadecadiyn-1-ol film of covalent cross-linking orientation, (iv) soaking the graphene oxide-10,12-pentadecadiyn-1-ol film obtained in the step (iii) in the mixed solution of hydroiodic acid and ethanol under the traction of the external force, washing and drying to obtain covalently crosslinked oriented graphene (G-PCO) film, (v) soaking the covalently crosslinked oriented graphene film obtained in step (iv) in the N,N-dimethylformamide (DMF) of 1-pyrenebutyric acid n-hydroxysuccinimide ester (PSE) and 1-aminopyrene (AP) in solution, then washing and drying, to obtain high-strength high-conductivity graphene (SB-BSrGO) film.