期刊
SYNTHETIC METALS
卷 172, 期 -, 页码 21-27出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2013.04.001
关键词
Poly(3,4-ethylenedioxythiophene); Graphene; Composite hydrogel; Electrochemical performance
资金
- National Natural Science Foundation of China [21173120]
- Postdoctoral Science Foundation of China [2012M511184]
- Postdoctoral Science Foundation of Jiangsu Province [1102075C]
Poly(3,4-ethylenedioxythiophene) (PEDOT)/sulfonic acid-functionalized graphene composite hydrogel was prepared by introducing microcontent of sulfonic acid-functionalized graphene (SFG) using in situ polymerization. The specific capacitance of the composite hydrogel was significantly improved by the introduction of SFG when the feeding ratio of SFG to 3,4-ethylenedioxythiophene (EDOT) was as low as 1:1000, the specific capacitance of the composite hydrogel can reach 93 F/g, which was more than two times than that of the pure PEDOT hydrogel (39 F/g). The composite hydrogel showed a high specific capacitance of 135 and 220 F/g at high current density (5 A/g) when KI and K3Fe(CN)(6)-H2SO4 solution were employed as redox-active electrolytes, respectively. The composite hydrogel in K3Fe(CN)(6)-H2SO4 can be used as potential electrode material for supercapacitor applications. (c) 2013 Elsevier B.V. All rights reserved.
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