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The preparation and performance of flocculent polyaniline/carbon nanotubes composite electrode material for supercapacitors

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Abstract

Polyaniline (PANI)/carbon nanotubes (CNTs) composite electrode material was prepared by in situ chemical polymerization. The structure and morphology of PANI/CNTs composite are characterized by Fourier infrared spectroscopy, scanning electron microscope, and transmission electron microscopy. It has been found that a flocculent PANI was uniformly deposited on the surface of CNTs. The supercapacitive behaviors of the PANI/CNTs composite materials are investigated with cyclic voltammetry, galvanostatic charge/discharge, impedance, and cycle life measurements. The results show that the PANI/CNTs composite electrodes have higher specific capacitances than CNT electrodes and better stability than the conducting polymers. The capacitance of PANI/CNTs composite electrode is as high as 837.6 F g−1 measured by cyclic voltammetry at 1 mV s−1. Besides, the capacitance retention of coin supercapacitors remained 68.0% after 3,000 cycles.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (grant no. 20871101) and Key Project of Education Department of Hunan Province Government (grant no. 2009WK2007).

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Authors and Affiliations

  1. School of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Minister of Education, Xiangtan University, Hunan, 411105, China

    Liping Zheng, Xianyou Wang, Hongfang An, Xingyan Wang, Lanhuan Yi & Li Bai

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  1. Liping Zheng
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  2. Xianyou Wang
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  3. Hongfang An
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  4. Xingyan Wang
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  5. Lanhuan Yi
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Correspondence to Xianyou Wang.

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Zheng, L., Wang, X., An, H. et al. The preparation and performance of flocculent polyaniline/carbon nanotubes composite electrode material for supercapacitors. J Solid State Electrochem 15, 675–681 (2011). https://doi.org/10.1007/s10008-010-1131-8

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  • DOI: https://doi.org/10.1007/s10008-010-1131-8

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