▎ 摘　　要

NOVELTY - Preparation of graphene roll involves dissolving graphite oxide as precursor in water, stirring for 30-60 minutes, ultrasonically processing for 1-4 hours, adding obtained suspension to electrochemical reaction apparatus using positive electrode with voltage of 10-30 V, carrying out positive electrode adsorption, processing at 60-80 V for conducting negative electrode reduction reaction to obtain product, adding the product to acid solution, removing impurities in the product, washing repeatedly using deionized water, ultrasonically processing and drying. USE - Preparation of graphene roll (claimed). ADVANTAGE - The graphene roll is prepared by simple, safe, environmentally-friendly and economical process.