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Issue 10, 2016
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Partially amorphized MnMoO4 for highly efficient energy storage and the hydrogen evolution reaction

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Abstract

Engineering the crystallinity of materials has been proved to be an efficient strategy to improve the material’s properties in many applications. Herein, we demonstrate the successful transformation of electrochemically inert MnMoO4 into highly active bifunctional electrode materials for supercapacitors and as catalysts for the hydrogen evolution reaction through hydrogenation (hydrogen reduction at elevated temperatures). The hydrogenated MnMoO4 is partially amorphized with a one-fold increase in the electrochemically active surface area (ECSA). A 17-fold increase in specific capacitance is achieved, and the onset overpotential to drive the hydrogen evolution reaction markedly decreased to 105 mV from 194 mV. The highly enhanced electrochemical properties are likely due to the amorphous components and highly enhanced ECSA, which expose more active sites and enhance the charge-transfer kinetics on the surface.

Graphical abstract: Partially amorphized MnMoO4 for highly efficient energy storage and the hydrogen evolution reaction

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Publication details

The article was received on 26 Jan 2016, accepted on 15 Feb 2016 and first published on 15 Feb 2016


Article type: Communication
DOI: 10.1039/C6TA00744A
Citation: J. Mater. Chem. A, 2016,4, 3683-3688
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    Partially amorphized MnMoO4 for highly efficient energy storage and the hydrogen evolution reaction

    X. Yan, L. Tian, J. Murowchick and X. Chen, J. Mater. Chem. A, 2016, 4, 3683
    DOI: 10.1039/C6TA00744A

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