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Microwave-assisted synthesis of organic–inorganic poly(3,4-ethylenedioxythiophene)/RuO2·xH2O nanocomposite for supercapacitor

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Abstract

An organic–inorganic poly(3,4-ethylenedioxythiophene) (PEDOT)/RuO2·xH2O nanocomposite (approximately 1 wt.% RuO2) has been successfully prepared for the first time under microwave irradiation within 5 min with power 900 W via in situ chemical polymerization. The morphology and structure of the resultant material is characterized by transmission electron microscope and Fourier transform infrared. Moreover, the electrochemical properties of the synthesized nanocomposite can be controlled by adjusting the annealing temperature, which is definitely illustrated by cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectra. Electrochemical data have shown that the PEDOT/RuO2·xH2O nanocomposite annealed at 150 °C possesses the most favorable charge/discharge ability with a specific capacitance of 153.3 F g−1 at a current density of 150 mA g−1 and the high efficient utilization of PEDOT at various current densities. Furthermore, such composite has a less capacitance degradation of 23.8% after 1,000 continuous cycles. The improved electrochemical performance are mainly attributed to the large electroactive surface of nanocomposite and the existence of amorphous RuO2·xH2O particles as well as a synergistic effect of the polymer PEDOT and annealed RuO2·xH2O. Thus, the PEDOT/RuO2·xH2O nanocomposite annealed at 150 °C can act as a promising electroactive material for supercapacitor application.

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Acknowledgements

This work was supported by National Basic Research Program of China (973 Program no. 2007CB209703) and National Natural Science Foundation of China (nos. 20633040, 20873064), Graduate Innovation Plan of Jiangsu Province (CX07B-089Z).

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Authors and Affiliations

  1. College of Material Science & Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    Li Chen, Changzhou Yuan, Bo Gao, Shengyao Chen & Xiaogang Zhang

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  1. Li Chen
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  2. Changzhou Yuan
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  3. Bo Gao
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  4. Shengyao Chen
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  5. Xiaogang Zhang
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Correspondence to Xiaogang Zhang.

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Chen, L., Yuan, C., Gao, B. et al. Microwave-assisted synthesis of organic–inorganic poly(3,4-ethylenedioxythiophene)/RuO2·xH2O nanocomposite for supercapacitor. J Solid State Electrochem 13, 1925–1933 (2009). https://doi.org/10.1007/s10008-008-0777-y

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  • DOI: https://doi.org/10.1007/s10008-008-0777-y

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