▎ 摘　　要

NOVELTY - Producing exfoliated graphite or graphene directly from a non-intercalated and non-oxidized graphitic material, comprises: (a) dispersing the graphitic material in a liquid intercalating agent to form a suspension, where the graphitic material has never been previously exposed to chemical intercalation or oxidation; and (b) subjecting the suspension to microwave or radio frequency irradiation with a frequency and an intensity for a length of time sufficient for producing the exfoliated graphite or graphene. USE - The method is useful for producing exfoliated graphite or graphene directly from non-intercalated and non-oxidized graphitic material (claimed). ADVANTAGE - The method enables production of more electrically conducting graphene sheets directly from a graphitic material without going through the chemical intercalation or oxidation procedure. The method combines inter-graphene expansion, intercalation, exfoliation, and separation of graphene sheets in one step, dramatically shortening the time to produce graphene and significantly reducing the amount of chemicals used. The method allows the production of the exfoliated graphite or graphene from non-intercalated and non-oxidized graphitic material in a strikingly simple, fast, scalable, environmentally friendly and cost-effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of producing a graphene material, comprising directly exposing a non-intercalated and non-oxidized graphitic material to microwave irradiation in the presence of a liquid intercalating agent, where the graphitic material has never been previously exposed to a chemical or oxidation treatment prior to the microwave irradiation step and the microwave has a frequency and an intensity sufficient for producing a single-layer graphene sheet.