A Reversible Redox Strategy for SWCNT‐Based Supercapacitors Using a High‐Performance Electrolyte |
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Authors: | Haijun Yu Prof. Jihuai Wu Prof. Jianming Lin Dr. Leqing Fan Miaoliang Huang Youzhen Lin Yan Li Fuda Yu Zhaoyuan Qiu |
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Affiliation: | 1. Engineering Research Center of Environment‐Friendly Functional Materials, Ministry of Education;2. Institute of Materials Physical Chemistry, Huaqiao University, No. 269 Chenhua North road, Quanzhou, Fujian Province (China), Fax: (+86)?595‐22692229 |
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Abstract: | In order to achieve pesudocapacitive performance of single‐wall carbon nanotube (SWCNT) electrodes, a high‐efficient and reversible redox strategy utilizing a redox‐mediated electrolyte for SWCNT‐based supercapacitors is reported. In this novel redox‐mediated electrolyte, the single‐electrode specific capacitance of the supercapacitor is heightened four times, reaching C=162.66 F g?1 at 1 A g?1. The quick charge‐discharge ability of the supercapacitor is also enhanced, and the relaxation time is as low as 0.58 s. Furthermore, the supercapacitor shows an excellent cycling performance of 96.51 % retention after 4000 cycles. The remarkable results presented here illustrate that the redox strategy is a facile and straightforward approach to improve the performances of SWCNT electrodes. |
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Keywords: | electrolytes p‐phenylenediamine redox chemistry single‐wall carbon nanotubes supercapacitors |
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