▎ 摘　　要

NOVELTY - A graphene is manufactured by dipping a cathode including metal and anode including graphite into electrolyte; and applying a direct current (DC) power supply between the cathode and anode, where the DC power supply is a DC switching power supply applying a positive voltage and a negative voltage alternately and repetitively. USE - Manufacture of graphene. ADVANTAGE - The method simply enables a mass production of high purity graphene. High purity graphene can be efficiently manufactured when the ions stacked up between the graphite layered structures are controlled. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the electrochemical device for carrying out manufacture of graphene.