▎ 摘 要
NOVELTY - Preparation of graphene comprises dissolving 0.1-14 mg/mL graphite and 0.1-0.7 mg/mL surfactant in water to obtain mixed solution, adding into mechanical mill grinding apparatus, milling, standing overnight to obtain first supernatant, centrifuging to obtain second supernatant, filtering, and drying. USE - Method for preparation of graphene (claimed). ADVANTAGE - The method is suitable for large-scale industrial production and has low equipment cost. The product has high purity and stable performance.