• 专利标题:   Electrolytic cell used for fabrication of graphene by electrochemical exfoliation of graphite, comprises electrodes that are linked and separated and are immersed in liquid electrolyte contained in vessel.
  • 专利号:   EP3650585-A1, WO2020099370-A1
  • 发明人:   GOMEZ ROMERO P, RUEDA GARCIA D
  • 专利权人:   FUNDACIO INST CATALA NANOCIENCIA I NANOT, CONSEJO SUPERIOR INVESTIGACIONES CIENTIF, FUNDACIO INST CATALA NANOCIENCIA I NANOT, CONSEJO SUPERIOR INVESTIGACIONES CIENTIF
  • 国际专利分类:   C01B032/19, C25B001/00, C25B009/06
  • 专利详细信息:   EP3650585-A1 13 May 2020 C25B-001/00 202041 Pages: 11 English
  • 申请详细信息:   EP3650585-A1 EP382798 12 Nov 2018
  • 优先权号:   EP382798

▎ 摘  要

NOVELTY - Electrolytic cell (1) comprises a first electrode (2) and a second electrode (3) linked and separated, where both first and second electrodes are immersed in a liquid electrolyte (7) contained in a vessel (8). The first electrode and the second electrode are arranged in a horizontal plane as a functional condition for the obtention of graphene. The first electrode is placed in a plane above the second electrode. The second electrode features a confinement zone (4) where the graphite (6) to be exfoliated can be placed. The confinement zone is delimited by a confining non-conducting material (5). The confinement zone comprises a compacting element arranged in a plane parallel to the second electrode and in contact with the graphite to be exfoliated. The first and second electrodes are arranged in planes parallel between them. The electrodes are separated by a distance of at least 1 mm. The electrolyte leads to a non-stable dispersion of graphene. USE - The electrolytic cell is used for the fabrication of graphene by electrochemical exfoliation of graphite (claimed). ADVANTAGE - The highly efficient process produces graphene from any kind of graphite material, regardless of its aggregation state (monolithic, or as a powder), or crystallinity. The process is simple with minimal consumption of energy leading to a product easy to isolate, not requiring complex filtration processes and leading to graphene without impurities or defects. The process allows for an exfoliation process needing much less energy and time that required for more compact materials which in turn implies a process less aggressive leading to a product with very small amounts of defects and oxygen and at a reduced cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a process for fabricating graphene by electrolytic exfoliation of a graphitic material in the electrolytic cell. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the electrolytic cell. Electrolytic cell (1) First electrode (2) Second electrode (3) Confinement zone (4) Non-conducting material (5) Graphite (6) Liquid electrolyte (7) Vessel (8)