▎ 摘　　要

NOVELTY - Industrial production of graphene comprises oxidizing graphite powder with nitrate in mixed liquid of strong acid and strong oxidant for 1-60 hour, diluting with water, adding hydrogen peroxide, and centrifuging after 0.5-6 hours to obtain oxidized graphite and aqueous solution containing inorganic ion; diluting graphite oxide with water, adding organic flocculant, layering liquid, removing upper layer clear liquid, and collecting lower sediment material after repeated flocculation; and ultrasonicating sediments and freeze-drying. USE - Industrial production for graphene. ADVANTAGE - The method quickly separates graphite oxide from residual impurities, enables graphene to have more uniformity and dispersibility, and realizes efficient mass production of graphene while ensuring quality.