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Issue 38, 2016
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A novel pseudocapacitance mechanism of elm seed-like mesoporous MoO3−x nanosheets as electrodes for supercapacitors

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Abstract

Pseudocapacitance is induced by surface or near surface redox, ion intercalation or underpotential deposition processes. A given electrochemically active material usually has only one of the above mechanisms. In this study, we synthesized elm seed-like mesoporous MoO3−x nanosheets, which possess both redox and intercalation faradic mechanisms. This novel pseudocapacitance mechanism causes a high capacitance of 1480 F g−1 at 5 A g−1 and outstanding cycling performance where the capacitance does not decay but increases slightly up to 10 000 cycles at a scan rate of 100 mV s−1. Here, we clarified that the tunnel structure of MoO3−x and its special electrochemical kinetics towards H+ generate this mechanism. This faradic mechanism could achieve a higher degree of utilization of the active-sites thus resulting in excellent electrochemical performance.

Graphical abstract: A novel pseudocapacitance mechanism of elm seed-like mesoporous MoO3−x nanosheets as electrodes for supercapacitors

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Publication details

The article was received on 25 Jul 2016, accepted on 21 Aug 2016 and first published on 22 Aug 2016


Article type: Communication
DOI: 10.1039/C6TA06326H
Citation: J. Mater. Chem. A, 2016,4, 14560-14566
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    A novel pseudocapacitance mechanism of elm seed-like mesoporous MoO3−x nanosheets as electrodes for supercapacitors

    Q. Lu, S. Zhao, C. Chen, X. Wang, Y. Deng and C. Nan, J. Mater. Chem. A, 2016, 4, 14560
    DOI: 10.1039/C6TA06326H

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