▎ 摘　　要

NOVELTY - Preparation of graphene by dissolving 20-140 mu m oxidized graphene into deionized water to prepare 0.5-10 mg/ml oxidized graphene solution; adding solution to electrochemical container; stripping by alternating-current power of 10-150 V and 0-7 kHz at 20-80 degrees C for 10-120 minutes; separating oxidized graphene by alternating-current power at 5-100 V and 20-80 degrees C for 2-10 minutes; reducing oxidized graphene by alternating-current power at 1-50 V and 20-80 degrees C for 5-60 minutes; taking graphene by stripping using liquid transfer pipe; and separating and reducing from electrochemical container. USE - Preparation of graphene. ADVANTAGE - The method improves preparation efficiency and quality of graphene, reduces preparation cost, and is suitable for commercial production. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a process for preparing graphene.