• 专利标题:   Method for electrochemically preparing graphene with high specific surface area of product, involves using graphite raw material with high crystallization as electrolytic raw material, and performing electrochemical peeling to the raw material.
  • 专利号:   CN115159514-A
  • 发明人:   QIAN Y, DU Z, ZHU Y, DENG X, PEI X, LI M, CHEN W, CHEN J
  • 专利权人:   SINOSTEEL NANJING NEW MATERIAL INST CO
  • 国际专利分类:   C01B032/19
  • 专利详细信息:   CN115159514-A 11 Oct 2022 C01B-032/19 202289 Chinese
  • 申请详细信息:   CN115159514-A CN10848291 19 Jul 2022
  • 优先权号:   CN10848291

▎ 摘  要

NOVELTY - The method involves using a graphite raw material with high crystallization as an electrolytic raw material. Electrochemical peeling operation is performed to the electrolytic raw material to obtain a graphene primarily peeled off. Secondary stripping operation is carried ou to a primarily stripped graphene to obtain a graphene with high specific surface area. The graphite raw material is graphitized, where temperature range of the graphitization process is about 2600-3000 degrees centigrade. USE - Method for electrochemically preparing graphene with high specific surface area of a product (all claimed). ADVANTAGE - The method enables electrochemically preparing high specific surface area graphene with high crystallinity of the electrolytic raw material, so that the graphite domain is more complete, in the stripping process is more easy obtain complete, large sheet of graphene sample. The method improves the electrolyte by introducing persulfate, and provides a stripping condition of low pressure, adding the best proportion, improves the whole stripping intercalation efficiency, by introducing proper oxygen functional group in the graphene interlayer improves the peeling degree of the graphene, at the same time, stripping under the low pressure. The gas on the electrode surface in the electrochemical process can quickly overflow, the bubble between the electrode/electrolyte is reduced, the corresponding contact resistance is greatly reduced, graphene number of peeling obtain obviously reduced, and the quality is improved. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron micrograph/microscopic photograph view of an electrochemically preparing graphene with high specific surface area of a product.