• 文献标题:   Modifying Reduced Graphene Oxide by Conducting Polymer Through a Hydrothermal Polymerization Method and its Application as Energy Storage Electrodes
  • 文献类型:   Article
  • 作  者:   LI SY, CHEN Y, HE X, MAO XL, ZHOU YJ, XU JH, YANG YJ
  • 作者关键词:   hydrothermal polymerization, reduced graphene oxide, conducting polymer, supercapacitor
  • 出版物名称:   NANOSCALE RESEARCH LETTERS
  • ISSN:   1931-7573 EI 1556-276X
  • 通讯作者地址:   Univ Elect Sci Technol China
  • 被引频次:   8
  • DOI:   10.1186/s11671-019-3051-6
  • 出版年:   2019

▎ 摘  要

We report chemical in situ deposition of conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) on reduced graphene oxide (rGO) nanosheets through a simple hydrothermal polymerization method. The functional groups on graphene oxide (GO) were directly employed as an oxidant to trigger the polymerization of 3,4-ethylenedioxythiophene (EDOT), and the GO nanosheets were reduced into rGO accordingly in an aqueous environment. Well anchoring of ultrathin PEDOT on rGO through this oxidant-free method was confirmed by UV-Vis spectrum, FT-IR spectrum, SEM, and TEM analysis. The obvious enhancement of conductivity was observed after the covering of PEDOT on rGO, and this composite showed high conductivity about 88.5S/cm. The electrochemical performance results revealed that rGO/PEDOT composite electrode exhibits high specific capacitance about 202.7F/g. The good synergetic effect between PEDOT and rGO also makes sure highly stable reversibility of composite electrode during charging/discharging process, and more than 90% initial capacitance retains after 9000 times cycles. In addition, the electrode based on rGO/PEDOT deposited on the cotton fabric shows excellent flexible ability with the evidence that 98% of the initial capacitance of electrode maintained after three thousands of free bending, which shows promising energy storage performance for flexible devices.