• 文献标题:   All-carbon flexible supercapacitors based on electrophoretic deposition of graphene quantum dots on carbon cloth
  • 文献类型:   Article
  • 作  者:   TJANDRA R, LIU WW, ZHANG MW, YU AP
  • 作者关键词:   graphene, quantum dot, flexible supercapacitor, edlc, energy storage
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Univ Waterloo
  • 被引频次:   7
  • DOI:   10.1016/j.jpowsour.2019.227009
  • 出版年:   2019

▎ 摘  要

In this work, a flexible, free-standing supercapacitor electrode fabricated using a combination of Graphene Quantum Dots (GQD) and carbon cloth. The GQD was synthesized using a simple peroxide-assisted hydrothermal method and was electrodeposited on carbon cloth to ensure intimate contact. The presence of GQD on the surface of the carbon cloth greatly enhanced its capacitance, resulting in a flexible EDLC electrode with an areal capacitance of 70 mF cm(-2) at a scan rate of 50 mV(s-1) even with a negligible mass loading. We have also demonstrated a fully-flexible symmetric full-cell fabricated using the GQD/carbon cloth composite with a high-rate capability, showing a rectangular CV curve even at a high scan rate of 1 V s(-1) and capacitance of 24 mF cm(-2) at a scan rate of 50 mVs(-1) when flexed and un-flexed.