• 专利标题:   Preparing graphene from graphite, comprises e.g. applying direct current on conductive agent aqueous solution and flake graphite, flowing air, stripping, filtering, washing, drying obtained filter cake and grinding.
  • 专利号:   CN111017915-A
  • 发明人:   ZHANG L, WANG X
  • 专利权人:   UNIV CHANGCHUN TECHNOLOGY
  • 国际专利分类:   C01B032/19
  • 专利详细信息:   CN111017915-A 17 Apr 2020 C01B-032/19 202037 Pages: 8 Chinese
  • 申请详细信息:   CN111017915-A CN11179420 10 Oct 2018
  • 优先权号:   CN11179420

▎ 摘  要

NOVELTY - Preparing graphene from graphite, comprises (i) adding a certain concentration of conductive agent aqueous solution and flake graphite into a electrochemical reactor equipped with graphite or metal electrodes, applying direct current and flowing air with a certain flow rate into the reaction system and stripping for a certain time, and (ii) taking out material of the reaction system, filtering, washing, drying the obtained filter cake under vacuum and grinding to obtain final product. USE - The graphene is useful for preparing electrode material, graphene composite or graphene composite material when the number of graphene layer is 1-3 layers (claimed). ADVANTAGE - The method: has mild reaction conditions and simple preparation process; adopts inorganic salt aqueous solution as conductive solution; does not need to add other strong oxidizing acid or alkali solution; and is safe, environmentally friendly and suitable for industrial production. The layered graphite has excellent peeling effect and quality of graphene product.