High stable zinc tungstate electrode for electrochemical supercapacitor

This paper aims to develop a way for synthesising Zinc Tungstate (ZnWO4) by Microwave method. Which is simpler easier and better than hydrothermal synthesis. Formation of the crystal microstructures were verified with the aid of Powder X-Ray Diffraction (XRD), and further, morphologies were investig...

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Hauptverfasser: Dhanush, P. C., Brijesh, K., Vinayraj, S., Nagaraja, H. S.
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:This paper aims to develop a way for synthesising Zinc Tungstate (ZnWO4) by Microwave method. Which is simpler easier and better than hydrothermal synthesis. Formation of the crystal microstructures were verified with the aid of Powder X-Ray Diffraction (XRD), and further, morphologies were investigated upon using Field Emission Scanning Electron Microscope (FESEM). The implications in the energy storage devices were examined by preparing a pseudo capacitor. The electrochemical characteristics were analysed by using three-electrode system and its performance was evaluated with the assistance of Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The result presented the specific capacitance as 79 Fg−1 for a scan rate of 1mVs−1. The ZnWO4 as an active material retains 96.52% stability up to 1000 cycles. A significant increase in the impedance for lower frequencies can be observed for the material after 1000 cycles when compared to that of the first cycle.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0004023