期刊
ELECTROCHIMICA ACTA
卷 132, 期 -, 页码 67-74出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.03.083
关键词
Supercapacitors; Poly(3;4-ethylenedioxythiophene); Conductive polymer; Galvanostatic charge/discharge; Specific capacitance
资金
- National Natural Science Foundation of China [51203070, 51073074]
- Jiangxi Provincial Department of Education [GJJ12595, GJJ11590, GJJ13565]
- Jiangxi Provincial Postdoctoral Preferential Foundation [2013KY14]
- Postdoctoral Starting up Foundations of Jiangxi Science and Technology Normal University [3000035608]
- Postdoctoral Starting up Foundations of Nanchang City
A novel EDOT-bithiophene-EDOT based comonomer, 5,5'-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,2'-bithiophene (BEDOT-BT), was synthesized, and further, it was electrodeposited into PBEDOT-BT on platinum electrode as an active electrode material for supercapacitor. As-formed PBEDOT-BT film was characterized by FTIR, SEM and thermal analysis. The electrochemical performances of the PEDOT-BT electrode with good thermal stability were also investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy techniques. The electrochemical results showed that PBEDOT-BT electrode afforded a specific capacitance of 171 F g(-1) at a current density of 1 A g(-1) and good cycling stability in ACN-Bu4NPF6 electrolyte solution. The specific energy of the PEDOT-BT electrode reached 23.76 Wh/kg at a specific power of 0.49 kW/kg. These results indicated that the PBEDOT-BT is a promising electrode material for supercapacitor applications. (C) 2014 Elsevier Ltd. All rights reserved.
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