JNM Journal of Nanomaterials 1687-4129 1687-4110 Hindawi Publishing Corporation 272093 10.1155/2013/272093 272093 Research Article Thin, Flexible Supercapacitors Made from Carbon Nanofiber Electrodes Decorated at Room Temperature with Manganese Oxide Nanosheets Nataraj S. K. skn30@cam.ac.uk 1 Song Q. qs290@cam.ac.uk 1 Al-Muhtaseb S. A. s.almuhtaseb@qu.edu.qa 2 Dutton S. E. sed33@cam.ac.uk 1 Zhang Q. q.zhang@cranfield.ac.uk 3 Sivaniah E. es1000@cam.ac.uk 1 Zhang Sulin 1 Biological and Soft System Sector Cavendish Laboratory University of Cambridge Cambridge CB3 0HE UK cam.ac.uk 2 Department of Chemical Engineering Qatar University P.O. Box 2713 Doha Qatar qu.edu.qa 3 Department of Materials Cranfield University Cranfield Bedfordshire MK43 0AL UK cranfield.ac.uk 2013 8 9 2013 2013 31 03 2013 11 07 2013 2013 Copyright © 2013 S. K. Nataraj et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

We report the fabrication and electrochemical performance of a flexible thin film supercapacitor with a novel nanostructured composite electrode. The electrode was prepared by in situ coprecipitation of two-dimensional (2D) MnO2 nanosheets at room temperature in the presence of carbon nanofibers (CNFs). The highest specific capacitance of 142 F/g was achieved for CNFs-MnO2 electrodes in sandwiched assembly with PVA-H4SiW12O40 · nH2O polyelectrolyte separator.

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