A Reversible Redox Strategy for SWCNT-Based Supercapacitors Using a High-Performance Electrolyte

作者：Yu Haijun; Wu Jihuai^*; Lin Jianming; Fan Leqing; Huang Miaoliang; Lin Youzhen; Li Yan; Yu Fuda; Qiu Zhaoyuan

来源：ChemPhysChem, 2013, 14(2): 394-399.

DOI：10.1002/cphc.201200816

• electrolytes
• p-phenylenediamine
• redox chemistry
• single-wall carbon nanotubes
• supercapacitors

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 Fg1 at 1 Ag1. 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.

• 出版日期2013-2-4
• 单位华侨大学