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Hydrothermally synthesized tin (IV) sulfide as a negative electrode for sodium-ion batteries and its sodiation mechanism
- Authors
- Kim, Hyun-seung; Kim, Jaekwang; Kim, Hyosung; Kim, Youngjin; Ryu, Ji Heon; Oh, Seung M.; Yoon, Songhun
- Issue Date
- Jan-2018
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Sodium-ion batteries; Negative electrode; Alloying; Tin (IV) sulfide
- Citation
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v.808, pp 137 - 140
- Pages
- 4
- Journal Title
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY
- Volume
- 808
- Start Page
- 137
- End Page
- 140
- ISSN
- 1572-6657
1873-2569
- Abstract
- A hydrothermally synthesized tin (IV) sulfide electrode was examined for use as a negative electrode in sodium ion batteries. Using ex-situ XRD and electrochemical analysis, the sodiation mechanism of tin (IV) sulfide was clarified, which revealed that the typical conversion reaction-coupled alloying reaction happened during sodiation with a high reversible capacity (similar to 640 mA h g(-1)). Also, the improved cycleability was observed in the tin (IV) sulfide electrode when compared with tin metal electrode. From comparison of quasi-open-circuit voltages at the 20th de-sodiated electrode, it was revealed that sodium trapping was considerably suppressed by sulfide formation with tin.
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