▎ 摘　　要

NOVELTY - Preparation of truncated graphene sheet comprises adding chlorosulfonic acid and hydrogen peroxide in graphite powder; centrifuging; washing; vacuum drying; and centrifuging again to obtain truncated graphene sheet. USE - Preparation of truncated graphene sheet (claimed). ADVANTAGE - The method is fast and suitable for mass production; and has high production efficiency and yield. The graphene is not oxidized into graphene oxide during the process, thus, maintaining excellent properties such as high quality and high conductive rate (2.4x 104 S/m).