▎ 摘　　要

NOVELTY - Method for producing graphene in bulk, which involves: i. taking graphite raw material and ball mill beads into the high pressure ball mill kettle, pumping carbon dioxide (CO2) into the high pressure ball mill through the high pressure CO2 pump, expel air and reach set pressure to form a supercritical CO2 system, subjecting the graphite raw material to ball milling pretreatment; ii. keeping the ball mill turned on, turn on the high pressure CO2 pump, pretreating graphite raw material in the high-pressure ball mill is purged with supercritical CO2 into the high-pressure shearing kettle, at the same time, the shearing rotor in the high-pressure shearing kettle is turned on for shearing treatment, it ends when the components in the ball mill are transferred, collecting the products in the high pressure shearing kettle. USE - Graphene used in the fields of supercapacitors, transistors, flexible displays, new energy batteries, aerospace, electronic computers and the like. ADVANTAGE - Method for producing graphene adopts supercritical carbon dioxide ball-milling pre-stripping serial shearing treatment is carried out on the graphite raw material in the atmosphere to prepare the high-quality graphene, operation is simple, environment is protected, efficiency is high, and the continuous stripping, collection and the like of the large-batch high-quality graphene is realized. DESCRIPTION OF DRAWING(S) - The drawing shows a graphene preparation flow chart. (Drawing includes non-English language text).