▎ 摘　　要

NOVELTY - Physical preparation of graphene comprises performing wet soaking treatment using water soaked expanded graphite, grinding expanded graphite to obtain expanded graphite soaking liquid, performing high pressure homogenization treatment on expanded graphite soaking liquid, performing emulsification treatment and ultra-high pressure critical treatment to obtain graphene dispersion liquid, standing graphene dispersion, layering and spray-drying. USE - Method of physical preparation of graphene. ADVANTAGE - The method saves energy, is environment friendly and does not pollute the environment.