Preparation of hierarchical polyaniline nanotubes based on self‐assembly and its electrochemical capacitance |
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| Authors: | Fen Ran Yong‐tao Tan Ji Liu Lei zhao Ling‐bin Kong Yong‐chun Luo Long Kang |
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| Institution: | 1. State Key Laboratory of Gansu Advanced Non‐Ferrous Metal Materials, Lanzhou University of Technology, , Lanzhou, 730050 China;2. Key Laboratory of Non‐ferrous Metal Alloys and Processing of Ministry of Education, Lanzhou University of Technology, , Lanzhou, 730050 China |
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| Abstract: | This article reports the preparation and self‐assembly of polyaniline (PANI) nanotubes, which were chemically synthesized by using in situ doping polymerization in the presence of ammonium persulfate (APS; (NH4)S2O8) as the oxidant without the use of an external template. The synthesized hierarchically nanotubes with a shape of a single nanotube with a length of 0.6 to 0.8 µm and an average with of 100 nm assembled from nanoparticles. The effects of the salicylic acid]/aniline] ratio on the size and capacitance of PANI nanotubes were studied. The specific capacitance behavior of the PANI nanotubes was also investigated by using cyclic voltammogram and galvanostatic charge–discharge tests. A maximum discharge‐specific capacitance of 422.5 F/g could be achieved, suggesting its potential application in electrode material for electrochemical capacitors. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | conducting polymer self‐assembly electrochemical properties supercapacitors |
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