▎ 摘　　要

NOVELTY - A graphene powder is prepared by putting graphite to dispersing medium containing oxidizing agent and solution of intercalating agent, stirring while continuously filling helium gas, allowing component contact, filtering, washing until neutral, drying to obtain graphite intercalation compound, performing heat treatment in air atmosphere to obtain 1st graphite intercalation compound, dispersing 1st graphite intercalation compound in organic solvent, performing ultrasonic treatment while introducing helium gas, centrifuging, taking upper layer from solution, filtering, washing, and drying. USE - Preparation of graphene powder (claimed). ADVANTAGE - Preparation process is safe, environment-friendly, and simple, and has high product yield, and simple equipment, and product has good conductivity. DESCRIPTION OF DRAWING(S) - The drawing shows a Raman spectral diagram of liquid dispersed graphene.