▎ 摘　　要

NOVELTY - A single layer graphene dimethyl sulfoxide solution is prepared by adding graphite to organic solution at - 5 to 0 degrees C to obtain graphite solution, fully stirring for 30 minutes to 2 hours, performing ultrasonic treatment to insert layer of solvent molecule to graphite layer to obtain expandable graphite solution, heating at 80-90 degrees C for 20 minutes to 1 hour under argon protection to obtain expanded graphite, stripping expanded graphite using ultrasonic dispersion liquid phase stripping method to obtain graphene oxide solution, filtering, washing, and drying to obtain graphene solid powder. USE - Preparation of single layer graphene dimethyl sulfoxide solution for conductive graphene and acrylonitrile composite, petroleum coke-modified activated carbon, and other composite material. ADVANTAGE - Preparation method uniformly disperses graphene in dimethyl sulfoxide solution and prepares high single layer rate graphene dimethyl sulfoxide solution. DETAILED DESCRIPTION - A single layer graphene dimethyl sulfoxide solution is prepared by adding graphite to organic solution at - 5 to 0 degrees C to obtain graphite solution, fully stirring for 30 minutes to 2 hours, performing ultrasonic treatment to insert layer of solvent molecule to graphite layer to obtain expandable graphite solution, heating at 80-90 degrees C for 20 minutes to 1 hour under argon protection to obtain expanded graphite, stripping expanded graphite using ultrasonic dispersion liquid phase stripping method to obtain graphene oxide solution, filtering, washing, drying to obtain graphene solid powder, and ultrasonically dispersing graphene solid in dimethyl sulfoxide solution. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscope image of a graphene.