▎ 摘　　要

NOVELTY - The preparation method of graphene involves dissolving sulfate or carbonate into de-ionized water, and dripping concentrated sulfuric acid to prepare electrolytic solution, placing the two graphite sheets in the electrolytic solution, and connecting two graphite sheets and stable rectangular wave power, supplying stable rectangular wave power to two graphite sheets serving as electrodes, peeling, ending peeling when no solid is separated from electrodes, removing electrode, separating separated electrolytic solution and graphene, and washing, and dispersing graphene. USE - Preparation method of graphene based on electrochemical stripping of dual graphite electrode (claimed). ADVANTAGE - The method enables preparation of graphene based on electrochemical stripping of dual graphite electrode with high repeatability, high yield, and excellent energy-saving effect, by simple, safe, controllable and environmentally-friendly process. DETAILED DESCRIPTION - The preparation method of graphene involves (1) dissolving sulfate or carbonate into de-ionized water, and dripping concentrated sulfuric acid to prepare electrolytic solution, where the amount ratio of sulfate or carbonate to concentrated sulfuric acid is 1:1-1:9, placing the two graphite sheets in the electrolytic solution, and connecting two graphite sheets and stable rectangular wave power, (2) supplying stable rectangular wave power to the two graphite sheets serving as the electrodes in the step (1), peeling, ending peeling when no solid is separated from the electrodes, (3) removing the electrode in the step (2), separating the separated electrolytic solution and the graphene, and washing using the deionized water, and (4) uniformly dispersing the graphene obtained in the step (3) into the dispersant.