▎ 摘　　要

NOVELTY - Preparation of graphene flexible electrode involves dissolving stabilizer and additive in an organic solvent as a dispersion medium of graphene, stripping raw graphite powder into graphene by characteristics of ultrasonically coupled supercritical carbon dioxide fluid, dispersing in dispersion medium to form a graphene dispersion, centrifuging, obtaining graphene conductive ink, washing substrate, blow drying with nitrogen, processing in an oxygen plasma machine at room temperature for 1 hour, placing the graphene conductive ink in an ink cartridge, providing the substrate in printer, accurately adjusting operating parameters of the printer, such that ink droplets are evenly ejected from each nozzle and does not form trailing and satellite points, printing graphene on the substrate, vacuum drying, annealing in air atmosphere at 200-450 degrees C for 10-40 minutes, and obtaining graphene flexible electrode on substrate. USE - Preparation of graphene flexible electrode used for field-effect transistor, sensor and display device (all claimed). ADVANTAGE - The method enables simple, quick and efficient preparation of graphene flexible electrode having excellent compatibility, with reduced generation of waste. DETAILED DESCRIPTION - Preparation of graphene flexible electrode involves dissolving stabilizer and additive in an organic solvent as a dispersion medium of graphene, stripping raw graphite powder into graphene by characteristics of ultrasonically coupled supercritical carbon dioxide fluid, dispersing in dispersion medium to form a graphene dispersion, centrifuging at 10000 rpm for 30 minutes, obtaining graphene conductive ink, washing substrate with deionized water and anhydrous ethanol, rinsing with deionized water, blow drying with nitrogen, processing in an oxygen plasma machine at room temperature for 1 hour, placing the graphene conductive ink in an ink cartridge, providing the substrate in printer at maximum heating temperature of 60-100 degrees C, accurately adjusting operating parameters of the printer, such that ink droplets are evenly ejected from each nozzle and does not form trailing and satellite points, printing graphene on the substrate, vacuum drying at 80-120 degrees C for 12 hours, placing in a tube furnace, annealing in air atmosphere at 200-450 degrees C for 10-40 minutes, and obtaining graphene flexible electrode on substrate. The weight ratio of stabilizer, additive and organic solvent is 1:1:50-100.