▎ 摘　　要

NOVELTY - Graphene porous film is claimed. The inside of the graphene porous film has a communicating pore structure which is adjustable in a pore diameter of 20-200 nm and has a specific surface area of 1000-1750 m2/g and an electric conductivity of 15 Angstrom 100 S/cm, with both electronic conductive network and ion transmission channel. USE - The film is useful in the field of energy storage, conversion and catalysis. ADVANTAGE - The film has an adjustable continuous pore structure, good surface area and electrical conductivity, excellent electronic conductive network and rich ion transport channels, and can be further compounded with other materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the graphene porous film comprising (i) preparing a graphene oxide alkenyl aqueous dispersion, adding graphite oxide to deionized water and adjusting pH to 9-10 usin aqueous ammonia, mechanically stirring for 72 hours to obtain graphene oxide colloidal dispersion and controlling the concentration of graphene oxide to 0.5-5 mg/ml, then adding a water-soluble polymer and a microwave absorbent, mechanically stirring and mixing at room temperature of 25 degrees C for 0.5-1 hour, and controlling the mass ratio of graphene oxide:water-soluble polymer:microwave absorber to 100:5-50:0.2-10 to obtain aqueous dispersion of graphene oxide alkenyl; (ii) preparing a graphene oxide-based composite film using a polymer filter having a pore diameter of less than or equal to 0.45 mu m, transferring the graphene oxide-based aqueous dispersion obtained in the step (i) into a solvent filter and vacuum-filtering using a vacuum pump to obtain graphene oxide-based composite film; (iii) preparing a graphene porous film, transferring the graphene oxide-based composite film obtained in the step (ii) into a glass container with an air extracting device, introducing an inert gas for protection and maintaining a vacuum degree of less than 100 Pa, placing the glass container in the center of the microwave oven tray and subjecting to microwave heat or high heat treatment for 5-60 seconds.