Experimental and computational analysis of SnS x encapsulated into carbonized chitosan as electrode material for potassium ion batteries.

Autor: Nowak AP; Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland. andnowak@pg.edu.pl.; Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland. andnowak@pg.edu.pl., Rokicińska A; Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland., Wang Z; National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai, 200240, China.; Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China., Prześniak-Welenc M; Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.; Institute of Nanotechnology and Materials Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland., Zarach Z; Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland., Tao K; National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai, 200240, China.; Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China., Roda D; Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland., Szkoda M; Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.; Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland., Trzciński K; Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.; Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland., Li J; National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai, 200240, China. lijinjin@sjtu.edu.cn., Kuśtrowski P; Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland. piotr.kustrowski@uj.edu.pl.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Dec 28; Vol. 14 (1), pp. 31212. Date of Electronic Publication: 2024 Dec 28.
DOI: 10.1038/s41598-024-82588-0
Abstrakt: Tin sulphide compounds (SnS x , 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 SnS x 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 SnS x @C electrode materials.
Competing Interests: Declarations. Competing interests: The authors declare no competing interests.
(© 2024. The Author(s).)
Databáze: MEDLINE
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