期刊
NEW JOURNAL OF CHEMISTRY
卷 43, 期 4, 页码 1987-1992出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nj05640d
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资金
- Faculty of Science, Cairo University
- Egyptian Petroleum Research Institute
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 approximate to 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.
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