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Experimental and computational analysis of SnSx encapsulated into carbonized chitosan as electrode material for potassium ion batteries
Abstract
Tin sulphide compounds (SnSx, x = 1, 2) are potential anode materials for potassium-ion batteries (PIBs) due to their characteristic layered structure, high theoretical capacity, non-toxicity and low production cost. However, they suffer from significant volume changes resulting in poor performance of such anodes. In this work incorporation of SnSx into the carbon structure was expected to overcome these disadvantages. Two SnS-based electrode materials encapsulated into chitosan, as a natural carbon source, are fabricated by two different synthesis routes: (a) solvothermal, and (b) solvothermal followed by pyrolysis. The results indicate that the synthesis route is a crucial factor affecting the composition and electrochemical performance of the negative electrode. The electrode material, exhibiting a high reversible capacity (304 mAh/g at 50 mA/g), and good rate capability (128 mAh/g at 1000 mA/g for 500 cycles) is produced by the solvothermal method. The relationship between specific capacity and synthesis procedure is analyzed using the results obtained from XRD, XPS. Additionally, density functional theory is employed to provide deeper insights into the underlying mechanisms governing the electrochemical performance of the SnSx@C electrode materials.
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Authors (11)
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Anna Rokicińska
- Wydział Chemiczny, Uniwersytet Jagielloński
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Zhilong Wang
- Department of Micro/Nano Electronics, Shanghai Jiao Tong University
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Kehao Tao
- Department of Micro/Nano Electronics, Shanghai Jiao Tong University
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Jinjin Li
- National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University
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Piotr Kuśtrowski
- Wydział Chemiczny, Uniwersytet Jagielloński
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1038/s41598-024-82588-0
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Scientific Reports
no. 14,
ISSN: 2045-2322 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Nowak A., Rokicińska A., Wang Z., Prześniak-Welenc M., Zarach Z., Tao K., Roda D., Szkoda M., Trzciński K., Li J., Kuśtrowski P.: Experimental and computational analysis of SnSx encapsulated into carbonized chitosan as electrode material for potassium ion batteries// Scientific Reports -Vol. 14, (2024), s.31212-
- DOI:
- Digital Object Identifier (open in new tab) 10.1038/s41598-024-82588-0
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
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