▎ 摘　　要

NOVELTY - Preparing graphene dispersion liquid involves dissolving the dispersant in a pyrrolidone organic solvent at 20-60 degrees C, adding graphene powder and ultrasonically dispersing at 300-600 Watt for 30-90 minutes to obtain graphene dispersion, where the dispersant is vinyl pyridine alkyl ketone and vinyl acetate copolymer, the mass percentage of dispersant in graphene dispersion liquid is 0-10 wt.% and mass percentage of graphene powder in graphene dispersion liquid is 0.1-50 milligram/milliliter. USE - Method for preparing graphene dispersion liquid (claimed). ADVANTAGE - The method enables to prepare graphene dispersion liquid which has structure integrity, good dispersing effect, high dispersion stability and good conductivity. It is easily removable after high temperature processing without affecting the conductivity of graphene and easily storable for long time.