▎ 摘　　要

NOVELTY - Preparation of graphene involves adding anthracite coal into a graphitization furnace, obtaining coal-based graphite, adding acid, mixing in an ice-water bath, adding oxidizing agent and surface modifier, stirring, heating the resultant mixture to 45-95 degrees C for 0.5-2 hours, adding deionized water, hydrolyzing, adding hydrogen peroxide, reacting, filtering the resultant reaction mixture, washing the obtained filter cake, controlling content of acid radical ions in the filter cake to 100 ppm or more, drying filter cake, obtaining graphite oxide and reducing the graphite oxide. USE - Preparation of graphene (claimed). ADVANTAGE - The method provides graphene with high yield, by an economical process.