▎ 摘　　要

NOVELTY - Preparation of graphene comprises adding graphite component with porous electrode and its array into electrolytic cell with electrolyte and porous insulating polymer, programming voltage current to generate nonpure carbon element between two-dimensional graphite atomic layer, increasing spacing to expand volume of graphite, and deagglomerating. USE - Method for preparation of graphene (claimed). ADVANTAGE - The method is suitable for large scale production and has low cost and high efficiency.