Flexible solid-state symmetric supercapacitors based on MnO2 nanofilms with high rate capability and long cyclability
Flexible solid-state symmetric supercapacitor was fabricated using MnO2 nanofilms growing directly on carbon cloth as the electrodes and PVA/H3PO4 gel as the electrolyte/separator. The device can be operated at a stable cell-voltage up to 1.4 V, obviously larger than that of conventional solid-state...
Main Authors: | , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
AIP Publishing LLC
2013-08-01
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Series: | AIP Advances |
Online Access: | http://link.aip.org/link/doi/10.1063/1.4820353 |
Summary: | Flexible solid-state symmetric supercapacitor was fabricated using MnO2 nanofilms growing directly on carbon cloth as the electrodes and PVA/H3PO4 gel as the electrolyte/separator. The device can be operated at a stable cell-voltage up to 1.4 V, obviously larger than that of conventional solid-state symmetric supercapacitors (≤1 V). It exhibited excellent rate capability with a scan rate as high as 20 V s−1 and a long cyclability (∼60000 cycles) even under severe mechanical deformation. The charge storage mechanism at different scan rates was also quantitatively analyzed. |
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ISSN: | 2158-3226 |