▎ 摘　　要

NOVELTY - Manufacturing graphene composite film, comprises e.g.: (a) preparing zeolite suspension containing 50-100 ppm zeolite nanocrystals; (b) preparing graphene oxide suspension containing 50-200 ppm graphene oxide; (c) mixing graphene oxide suspension with zeolite suspension according to a volume ratio of 1:1-9:1 to form composite solution and transferring solution into 15 degrees C water bath; (d) adding surfactant into solution in water bath; and (e) sonicating solution after step (d) for 5-30 minutes and removing solution out of water bath, with color of solution turning from deep brown into black. USE - The method is useful for manufacturing a graphene composite film. ADVANTAGE - The method: provides the graphene composite film with smooth surface and a uniform thickness; and utilizes the metal ions that can enter the zeolite nanocrystals to increase the specific capacitance of the graphene composite film. DETAILED DESCRIPTION - Manufacturing a graphene composite film, comprises: (a) preparing a zeolite suspension containing 50-100 ppm zeolite nanocrystals, where a particle size of the zeolite nanocrystals is 50-80 nm, and the zeolite suspension has a pH value of 11-13; (b) preparing a graphene oxide suspension containing 50-200 ppm graphene oxide; (c) mixing the graphene oxide suspension with the zeolite suspension according to a volume ratio of 1:1-9:1 to form a composite solution and transferring the composite solution into a 15 degrees C water bath when a color of the composite solution turns from brownish-yellow into deep brown; (d) adding a surfactant into the composite solution in the 15 degrees C water bath; (e) sonicating the composite solution after the step (d) for 5-30 minutes and removing the composite solution out of the 15 degrees C water bath, with the color of the composite solution turning from deep brown into black; (f) atomizing the composite solution after the step (e) to form atomized droplets; (g) treating the atomized droplets with a plasma to charge the atomized droplets; and (h) depositing the charged atomized droplets on a substrate having a temperature of 150-350 degrees C, to form a graphene composite film having not greater than 5 layers.