▎ 摘 要
NOVELTY - Preparation of graphene involves oxidizing expandable graphite material that is prepared by microwave method at 45 degrees C by Hummers method, cooling in an ice bath or circulating water at 4-5 degrees C, peeling graphene sheet by dripping cold water and hydrolyzing. USE - Preparation of graphene. ADVANTAGE - The method enables simple preparation of safe and reliable graphene with high yield and large area.