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- Title
Chemisynthesized tungsten oxide (WO<sub>3</sub>) electrodes for high-performance asymmetric supercapacitor application: effect of deposition time.
- Authors
Patil, Sujata B.; Nikam, Ranjit P.; Lokhande, Chandrakant D.; Patil, Raghunath S.
- Abstract
The tungsten oxide (WO3) thin films were deposited on stainless steel substrates via low-cost chemical bath deposition method at different deposition time periods of 4, 8, 12, 16, and 20 h. The different deposition time periods affect the physicochemical properties of electrodes. The electrode synthesized at 12 h time period showed maximum thickness of 2.27 μm and hexagonal crystal structure with nanobundle like surface morphology. The electrode synthesized at 12 h time period showed specific capacitance (Cs) of 1050 Fg−1 at 5 mV s−1 scan rate with 89% capacitive retention after 4000 CV cycles. The asymmetric supercapacitor device of configuration WO3/PVA-H2SO4/PANI was fabricated using WO3 as negative electrode and polyaniline (PANI) as the positive electrode. The fabricated WO3/PVA-H2SO4/PANI device showed a specific capacitance of 484 Fg−1 with energy and power density of 113.7 Wh kg−1 and 1.1 kW kg−1, respectively with 85% capacitive retention over 4000 CV cycles.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 28, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11384-9