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- Title
Electrochemical capacitance of the composite of poly (3,4-ethylenedioxythiophene) and functionalized single-walled carbon nanotubes.
- Authors
Jie Wang; Youlong Xu; Xiaofei Sun; Xifei Li; Xianfeng Du
- Abstract
Abstract The homogenous coating of poly (3,4-ethylenedioxythiophene) (PEDOT) on carbon nanotubes was realized by using functionalization of single-walled carbon nanotubes (SWNTs) in this study. Consequently, the PEDOT/functionalized SWNTs (PEDOT/F-SWNTs) composites, with size of around 100nm, which is much smaller than that of PEDOT, were prepared by the electrochemical method. Its small granule increased the active/nonactive mass ratio and reduced the ions diffusion length. Therefore, its specific capacitance of the composite was up to 200F g−1, which was remarkably greater than that of PEDOT. Furthermore, the PEDOT/F-SWNTs composites had very rapid charge/discharge ability with specific capacitance of 180F g−1 at scanning rate of 200mV s−1 and 170F g−1 at frequency of 1Hz, which is an important practical advantage. In addition, such composite had a good cycling performance and a wide potential window.
- Subjects
CARBON nanotubes; CARBON composites; IONS; ELECTROCHEMISTRY
- Publication
Journal of Solid State Electrochemistry, 2008, Vol 12, Issue 7/8, p947
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-007-0439-5