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Polypyrrole-coated samarium oxide nanobelts: fabrication, characterization, and application in supercapacitors

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Abstract

Polypyrrole-coated samarium oxide nanobelts were synthesized by the in situ chemical oxidative surface polymerization technique based on the self-assembly of pyrrole on the surface of the amine-functionalized Sm2O3 nanobelts. The morphologies of the polypyrrole/samarium oxide (PPy/Sm2O3) nanocomposites were characterized using transmission electron microscope. The UV–vis absorbance of these samples was also investigated, and the remarkable enhancement was clearly observed. The electrochemical behaviors of the PPy/Sm2O3 composites were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge–discharge. The results indicated that the PPy/Sm2O3 composite electrode was fully reversible and achieved a very fast Faradaic reaction. After being corrected into the weight percentage of the PPy/Sm2O3 composite at a current density of 20 mA cm−2 in a 1.0 M NaNO3 electrolyte solution, a maximum discharge capacity of 771 F g−1 was achieved in a half-cell setup configuration for the PPy/Sm2O3 composites electrode with the potential application to electrode materials for electrochemical capacitors.

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Acknowledgments

This work was supported by the Natural Science Foundation of Gansu Province (Grant No. 1107RJZA213) and the Fundamental Research Funds for the Central Universities (No. lzujbky-2011-21).

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Authors and Affiliations

  1. Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China

    Peng Liu, Yunjiao Wang, Xue Wang, Chao Yang & Yanfeng Yi

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  1. Peng Liu
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  2. Yunjiao Wang
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  3. Xue Wang
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  4. Chao Yang
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  5. Yanfeng Yi
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Correspondence to Peng Liu.

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Liu, P., Wang, Y., Wang, X. et al. Polypyrrole-coated samarium oxide nanobelts: fabrication, characterization, and application in supercapacitors. J Nanopart Res 14, 1232 (2012). https://doi.org/10.1007/s11051-012-1232-7

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