9,10-蒽醌-2-磺酸钠盐掺杂对导电聚吡咯电容性能的促进作用

doi:10.3866/PKU.WHXB20101107

Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (11): 2951-2956.doi: 10.3866/PKU.WHXB20101107

• ELECTROCHEMISTRY • Previous Articles Next Articles

Improved Capacitive Performance of Polypyrrole Doped with 9,10-Anthraquinone-2-sulfonic Acid Sodium Salt

WAN Qun-Yi, FAN Shuan-Shi, YUE Xian-Jun, LANG Xue-Mei, XU Wen-Dong, LI Jing, FENG Chun-Hua

Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China

Received:2010-05-04 Revised:2010-07-20 Published:2010-10-29
Contact: FENG Chun-Hua E-mail:chfeng@scut.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (20803025), Natural Science Foundation of Guangdong Province, China (8451064101000891) and Fundamental Research Funds for the Central Universities, South China University of Technology, China (2009ZM0026).

Abstract

Abstract:

A polypyrrole(PPy)/9,10-anthraquinone-2-sulfonic acid sodium salt (AQS) composite electrode was prepared by constant-potential electropolymerization using AQS as a counter-ion. Cyclic voltammetry (CV), galvanostatic charge-discharge, and electrochemical impedance spectroscopy (EIS) were used to evaluate its capacitance performance. Experimental results show that the AQS dopant results in an improved specific capacitance, increased long-cycle stability, and a wide working potential range compared to that of using ClO^-₄ as the dopant. The PPy/AQS composite electrode has a specific capacitance of 491 F·g^-1 at a CV scan rate of 50 mV·s^-1 within a potential range of -0.6 to 0.6 V in 1 mol·L^-1 KCl, which is 1.5 times more than that with a PPy/ClO^-₄ composite electrode. The improvement in capacitance should be attributed to the good redox performance of AQS and the porous submicron/ nanosized structure of the resulting composite film.

Key words: Anthraquinone sulfonate, Polypyrrole, Electrochemical capacitor, Electropolymerization, Charge-discharge test

WAN Qun-Yi, FAN Shuan-Shi, YUE Xian-Jun, LANG Xue-Mei, XU Wen-Dong, LI Jing, FENG Chun-Hua. Improved Capacitive Performance of Polypyrrole Doped with 9,10-Anthraquinone-2-sulfonic Acid Sodium Salt[J]. Acta Phys. -Chim. Sin. 2010, 26(11), 2951-2956. doi: 10.3866/PKU.WHXB20101107

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Improved Capacitive Performance of Polypyrrole Doped with 9,10-Anthraquinone-2-sulfonic Acid Sodium Salt

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