▎ 摘　　要

NOVELTY - Preparing graphene solution based on supercritical carbon dioxide and pyrene-based polymer, comprises dispersing (in mg) graphite (10-20) and pyrene-based polymer (15.4-30.8) in 5-10 ml of dimethyl sulfoxide to obtain suspension, stirring the suspension, reacting in supercritical carbon dioxide reactor at 40- 45 degrees C under 12-16 MPa pressure for 3-6 hours, reducing pressure to obtain reaction liquid, separating to discard supernatant, repeatedly washing the precipitate with solvent to remove unreacted polymer, redispersing the precipitate in the same solvent, and removing unstripped graphite. USE - The method is useful for preparing graphene solution based on supercritical carbon dioxide and pyrene-based polymer. ADVANTAGE - The method is simple, solves the difficulty in preparing a homogeneous graphene solution of high concentration, and ensures high-yield, high-quality and a yield of 51.8 wt.% of non-defective graphene layer.