Hydrothermal synthesis of layered CoS@WS2 nanocomposite as a potential electrode for high-performance supercapacitor applications
| Autor: | Dinah Punnoose, S. Srinivasa Rao, P. Himasree, Kummara Venkata Guru Raghavendra, Hee-Je Kim, Nagabhushanam Kundakarla, T.N.V. Krishna |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Supercapacitor Materials science Nanocomposite Composite number Condensed Matter Physics 01 natural sciences Capacitance Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Dielectric spectroscopy Chemical engineering 0103 physical sciences Electrode Hydrothermal synthesis Electrical and Electronic Engineering Cyclic voltammetry |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 31:16290-16298 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | Low cost and efficient one-step facile hydrothermal synthesis was used to synthesis CoS@WS2 composite on the surface of nickel foam and evaluated as an electrode material for high-performance supercapacitors. Electrochemical impedance spectroscopy, galvanostatic charge–discharge tests, and cyclic voltammetry were used to evaluate the electrochemical characteristics of the CoS@WS2 electrode. A high-specific capacitance of 2442.32 F g−1 at a current density of 4.28 A g−1 was noted for CoS@WS2. The fabricated CoS@WS2 electrode material displayed acceptable rate capability (97.1% capacitance retention at a current density of 4.28 A g−1) and good cycling stability over 3000 charge–discharge cycles. The advanced electrochemical characteristics of CoS@WS2 were contributed to the synergistic effect and high surface area. The greater electrochemical performance of nanoparticles-like CoS@WS2 composite attracts their capacity to meet the requirements of applied electrochemical energy-loading applications. Over all, these results demonstrate that the synthesis of layered CoS@WS2 could be a promising for applied electrochemical energy-loading applications. |
| Databáze: | OpenAIRE |
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