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- Title
Electrochemical performance evaluation of a newly developed ZnS–SnO<sub>2</sub> composite in an aqueous electrolyte.
- Authors
Rafique, Kinza; Shah, Muhammad Zia Ullah; Shah, A.; Shah, Muhammad Sana Ullah; Hou, Hongying; Sajjad, Muhammad; Arif, Muhammad; Ahmad, Syed Awais; Hassan, Najmul
- Abstract
We reported the sol–gel synthesis for preparing ZnS and SnO2 products and their composite material, for the first time for application as an electrode for a hybrid supercapacitor to attain an optimized energy storage performance. The structural feature reveals that the high phase purity and crystallinity with tetragonal SnO2, and in the cubic crystal structure of ZnS has been successfully verified from XRD analysis. A snow-like morphology of SnO2 and irregular nanoparticles in shape with a honeycomb-like appearance of ZnS and their combination that is detected in the ZnS–SnO2 composite without any residues was noticed on the surface of the samples, which was confirmed from the FESEM study. The electrochemical properties demonstrated that the ZnS–SnO2 composite manifests more awesome performance than its bulk materials, e.g., 466 F/g of capacitance, good rate performance, and reversibility with good charge transport properties. These striking results motivated us to fabricate a hybrid supercapacitor for practical aspects of the as-prepared electrode material. To do so, a ZnS–SnO2||AC/KOH hybrid supercapacitor was fabricated, which delivers a good stability of 85.7% (7000 cycles) and supreme power delivery of 4238.4 W/kg. A great specific energy of 36.12 Wh/kg after adding an optimum voltage of 1.7 V. These outstanding outcomes manifest the promising route to prepare another metal oxide/hydroxide for electrochemical energy conversion and storage devices.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 24, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11124-z