▎ 摘　　要

NOVELTY - Preparing graphene-based conductive ink comprises adding surfactant sodium dodecyl sulfate in graphene dispersion, stirring, mixing, adjusting surface tension and viscosity, adding deionized water into the silver oxalate, dispersing evenly, adding aqueous ammonia to adjust pH, adding structure inducing agent, transferring to polyethylene plastic bag, sealing with nitrogen gas, exhausting oxygen, irradiating with electron accelerator as a radiation source, distilling under vacuum condition, concentrating to obtain nanosilver powder suspension, mixing epoxy resin, amine epoxy resin curing agent, and obtained graphene dispersion, adding acetone, diluting to obtain component A, mixing obtained nano silver powder suspension with an acrylic resin, and component A, shaking with ultrasonic waves, heating, stirring, performing ultrasonic vibration treatment, heating, and stirring to obtain graphene-based conductive ink. USE - The graphene-based conductive ink is useful for circuit substrate (claimed).