▎ 摘　　要

NOVELTY - A device for preparing graphene, the device comprises a water pump connected to the first reaction vessel and the second reaction vessel, the first reaction vessel and the second reaction vessel bottom embedded metal plate provided with the first reaction vessel filled with weak acid electrolyte, the outer surface welding expanded graphite cake with a conductive metal mesh, platinum plate is embedded at the top of the second reaction vessel, the inner surface of the wire fixing plate is vertically welded with several platinum wire. This utility model mainly uses the principle of electrolysis, the expanded graphite is used as one end of the conductive electrode, an access circuit in the electrolysis, so that the expanded graphite is delamination in the electrolyte, and the electrolytic solution for secondary electrolysis by platinum, cleaning by ultrasonic wave, then drying to obtain the needed graphene. and the obtained graphene, the proportion of single-layer graphene.