• 专利标题:   Method for manufacturing supercapacitor based on graphene electrode, involves heat treating graphene oxide flocculent powder, placing black flocculent graphene powder in tube furnace and adding ethanol and PTFE and stirring.
  • 专利号:   CN109065373-A
  • 发明人:   LI Y
  • 专利权人:   LI Y
  • 国际专利分类:   H01G011/84, H01G011/86, H01G011/36
  • 专利详细信息:   CN109065373-A 21 Dec 2018 H01G-011/84 201916 Pages: 6 Chinese
  • 申请详细信息:   CN109065373-A CN10759162 11 Jul 2018
  • 优先权号:   CN10759162

▎ 摘  要

NOVELTY - A graphene electrode based on supercapacitor manufacturing method involves heat treating the graphene oxide flocculent powder to obtain black flocculent graphene powder. The black flocculent graphene powder is placed in a tube furnace to obtain graphene electrode material and adding ethanol and PTFE and stirring to obtain a mixed solution. The graphene electrode material and the mixed solution are added and stirred to obtain viscous mixture. The viscous mixture is pressed into a sheet, followed by collecting the foamed nickel in same size as the graphene electrode, soaking in 15% hydrogen chloride and drying, using the powder tablet press to press the graphene electrode on the collector to form a supercapacitor electrode portion and cutting the PTFE microporous membrane in same size as the graphene electrode and the collector and immersing in a 1 mol/L tetraethylammonium tetrafluoroborate/propylene carbonate organic solution for 8-10 hours to obtain the finished product. USE - Method for manufacturing supercapacitor based on graphene electrode. ADVANTAGE - The method enables manufacturing supercapacitor based on graphene electrode with low internal resistance and large capacity, in cost effective manner. DETAILED DESCRIPTION - A graphene electrode based on supercapacitor manufacturing method involves heat treating the graphene oxide flocculent powder at 280-340 degrees C for 2-3 minutes to obtain black flocculent graphene powder. The black flocculent graphene powder is placed in a reducing environment in a tube furnace at 480-540 degrees C for 70-100 minutes to obtain graphene electrode material and adding ethanol and PTFE emulsion to the stirrer at a weight ratio of 5:3 and stirring for 20-25 minutes to obtain a mixed solution. The graphene electrode material and the mixed solution are added to the stirrer at a weight ratio of 2:7 and stirred to obtain viscous mixture. The viscous mixture is pressed into a sheet having a thickness of 0.8-1 mm on a roll machine to obtain a sheet, followed by collecting the foamed nickel in same size as the graphene electrode, soaking in 15% hydrogen chloride for 8-12 minutes, moving to deionized water for 8-12 minutes, soaking in ethanol for 8-12 minutes and drying, using the powder tablet press to press the graphene electrode on the collector to form a supercapacitor electrode portion using foamed nickel as a collector and graphene as an electrode material and cutting the PTFE microporous membrane in same size as the graphene electrode and the collector and immersing in a 1 mol/L tetraethylammonium tetrafluoroborate/propylene carbonate organic solution for 8-10 hours to obtain the finished product. An INDEPENDENT CLAIM is also included for a supercapacitor based on graphene electrode manufactured by the method.