▎ 摘　　要

NOVELTY - A bacterial cellulose/active carbon fiber/graphene film material preparing method involves cutting bacterial cellulose into pieces. The pieces are washed, and freeze-dried to obtain treated bacterial cellulose, which is pyrolyzed. The bacterial cellulose pieces are washed and transferred to homogenizing machine to obtain bacterial cellulose slurry, followed by stirring graphene dispersion liquid with activated carbon fiber dispersion uniformly to obtain composite material dispersion. The bacterial cellulose slurry is filtered, added with composite material dispersion liquid and dried. USE - Method for preparing bacterial cellulose/active carbon fiber/graphene film material that is utilized in super capacitor. ADVANTAGE - The method enables preparing the film material with better stability and mechanical property, and better effect of improving capacity of the supercapacitor, in a simple and cost effective manner. DETAILED DESCRIPTION - A bacterial cellulose/active carbon fiber/graphene film material preparing method involves cutting bacterial cellulose into pieces. The pieces are washed by soaking in deionized water ultrasonically, freeze-dried using liquid nitrogen for 15-30 hours to obtain treated bacterial cellulose. The treated bacteria cellulose is placed in a tubular furnace by high temperature pyrolysis, followed by adding activated carbon fiber with surfactant, and dispersing in deionized water to obtain active carbon fiber dispersion. The bacterial cellulose pieces are washed by soaking in deionized water ultrasonically, and stirred in deionized water, and transferred to homogenizing machine to obtain bacterial cellulose slurry, adding acidified graphene with surfactant, dispersing in deionized water to obtain graphene dispersion liquid, which is stirred with activated carbon fiber dispersion uniformly to obtain composite material dispersion. The bacterial cellulose slurry filtered under vacuum by using filter film and added with composite material dispersion liquid and dried under vacuum drying box to prepare bacterial cellulose/activated carbon fiber/graphene film material, where the bacteria cellulose/activated carbon fiber/graphene film material comprises activated carbon fiber of bacterial cellulose at a mass ratio of (15-1.5):1, and graphene and bacterial cellulose at a mass ratio of 1:(0.02-0.2).