▎ 摘　　要

NOVELTY - Preparing graphene aqueous solution and graphene nanosheet, comprises using graphite particles, adding the dispersant into deionized water, and adding graphite particles to obtain a colloidal suspension, adding 15-25 l of deionized water per kilogram of graphite particles, stirring colloidal suspension and shearing by shearing equipment to obtain a colloidal solution in the form of graphite particles stably existing, where the solid substances in the colloidal solution include few-layer graphene, multi-layer graphene, graphene nanosheets and graphite particles, introducing colloidal solution into the ultrasonic machine or ultrasonic electrode machine for 1-3 hours of ultrasonic vibration, placing colloidal solution in a high pressure homogenizer, carrying out high pressure homogenization, obtaining graphene slurry of very few-layer graphene, few-layer graphene, multi-layer graphene and graphene nanosheets, centrifuging graphene slurry and drying the precipitate. USE - Preparing graphene aqueous solution and graphene nanosheet. ADVANTAGE - The method enables to prepare graphene aqueous solution and graphene nano sheet with high quality and mass production.