Electrochemical properties of polyaniline in p-toluene sulfonic acid solution |
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Authors: | Guocheng Xu Wei Wang Xiaofei Qu Yansheng Yin Lei Chu Benlin He Huikang Wu Jingrui Fang Yusheng Bao Liang Liang |
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Affiliation: | aInstitute of Materials Science and Engineering, Ocean University of China, Songling Road 238, Qingdao 266100, Shandong Province, PR China |
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Abstract: | Polyaniline was deposited potentiodynamically on a stainless steel substrate in the presence of an inorganic acids (sulfuric acid). The electrochemical characterization of the electrode was carried out by means of cyclic voltammetry and electrochemical impedance spectroscopy in the organic acids (p-toluene sulfonic acid) solution. The results show that polyaniline has a high specific capacitance of 431.8 F g−1 at 1 mV s−1, high coulombic efficiency of 95.6% at 20 mV s−1, and exhibits a high reversibility. This indicates the promising feasibility of the polyaniline used as an electrochemical capacitor material in the electrolyte of p-toluene sulfonic acid solution especially at high charge–discharge process. |
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Keywords: | Polyaniline p-Toluene sulfonic acid Supercapacitor Electrochemical Conducting polymers |
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