▎ 摘　　要

NOVELTY - Graphene is prepared by uniformly mixing graphite powder and intercalation agent in organic solvent, ultrasonically peeling off mixture in ultrasonic water bath after centrifugal separation, and filtering by film vacuum filtering. USE - Preparation of graphene for optical photoelectric application. ADVANTAGE - Process cost is low, operation is easy to control, high production efficiency is achieved, and graphene has high purity, less defect, and good dispersibility. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of the preparation of graphene. (Drawing includes non-English language text).