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Issue 4, 2019
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Mesoporous ZnMoS4 as a supercapacitor electrode material with battery-like behavior

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Abstract

This paper reports the successful synthesis of bimetallic sulfide ZnMoS4 (ZMS) using a solvothermal method. The structural and morphological properties of ZMS were identified using several characterization methodologies. ZMS material was produced in a sheet-like morphology with a mesoporous structure and its supercapacitive performance was examined. CV and GCD measurements confirmed that ZMS is capable of storing electrical energy showing a battery-like behavior which is expected to proceed via K+ ion intercalation/de-intercalation within the layered matrix of ZMS. Upon raising the current density from 0.7 to 10 A g−1, its specific capacitance slightly decreased from 280 F g−1 to 243 F g−1, maintaining 86.79% of its initial capacitance, which indicates that the ZnMoS4 compound has a high-rate capability. In addition, the ZMS electrode displays excellent long-term stability preserving a capacitance retention of ∼110% even after 1000 cycles, which is likely attributed to the enhanced diffusion of electrolyte ions within the electrode active material as inferred from EIS measurements.

Graphical abstract: Mesoporous ZnMoS4 as a supercapacitor electrode material with battery-like behavior

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Publication details

The article was received on 06 Nov 2018, accepted on 23 Dec 2018 and first published on 09 Jan 2019


Article type: Paper
DOI: 10.1039/C8NJ05640D
Citation: New J. Chem., 2019,43, 1987-1992
  • Open access: Creative Commons BY-NC license
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    Mesoporous ZnMoS4 as a supercapacitor electrode material with battery-like behavior

    A. E. Elkholy, A. S. Dhmees, F. E. Heakal and M. A. Deyab, New J. Chem., 2019, 43, 1987
    DOI: 10.1039/C8NJ05640D

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