▎ 摘　　要

NOVELTY - Preparing high-quality graphene comprises (1) using graphite plates as anode graphite plates and cathode graphite plates respectively, and connecting anode graphite plates and cathode graphite plates to the two ends of dual-pulse power supply system respectively, and (2) placing anode graphite board and cathode graphite board in the electrolyte, turning on double pulse power system and maintaining constant voltage, alternately intercalating anode graphite plate and cathode graphite plate to realizing electrochemical peeling of graphite plate, separating solid-liquid, cleaning and drying to obtain high-quality graphene. USE - The method is useful for preparing high-quality graphene.