▎ 摘　　要

NOVELTY - Preparation of single layer graphene dimethyl formamide solution involves adding graphite to an organic solution at -5 degrees C, stirring for 30 minutes to 2 hours, ultrasonically intercalating solvent molecules into the graphite layer, obtaining expandable graphite solution, protecting under argon atmosphere, heating at 70-80 degrees C for 20 minutes to 1 hours, filtering by ultrasonic separation, washing, drying, obtaining graphene powder, and ultrasonically dispersing graphene in solution of dimethyl formamide. USE - Preparation of single layer graphene dimethyl formamide solution used for film-forming material and plastic composite.