Abstract
Sodium-ion batteries have been considered as one of the most promising types of batteries, beyond lithium-ion batteries, for large-scale energy storage applications. However, their deployment hinges on the development of new anode materials, since it has been shown that many important anode materials employed in lithium ion batteries, such as graphite and silicon, are inadequate for sodium-ion batteries. We have simply prepared novel SnS/C nanocomposites through a top-down approach as anode materials for sodium-ion batteries. Their electrochemical performance has been significantly improved when compared to bare SnS, especially in terms of cycling stability and rate capabilities. SnS/C nanocomposites exhibit excellent capacity retention, at various current rates, and deliver capacities as high as 400 mA h g-1 even at the high current density of 800 mA g-1 (2C). Ex situ transmission electron microscopy, X-ray diffraction and operando X-ray absorption near edge structure studies have been performed in order to unravel the reaction mechanism of the SnS/C nanocomposites.
Original language | English |
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Pages (from-to) | 23847-23853 |
Number of pages | 7 |
Journal | RSC Advances |
Volume | 8 |
Issue number | 42 |
DOIs | |
Publication status | Published - 2018 |
Externally published | Yes |
Bibliographical note
Funding Information:This work is based upon research conducted at the Cornell High Energy Synchrotron Source (CHESS) which is supported by the National Science Foundation and the National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-1332208. S.-H. Yu acknowledges support from CHESS and the Energy Materials Center at Cornell (emc2). Y.-E. Sung acknowledges the financial support by IBS-R006-A2.
Funding Information:
This work is based upon research conducted at the Cornell High Energy Synchrotron Source (CHESS) which is supported by the National Science Foundation and the National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-1332208. S.-H. Yu acknowledges support from CHESS and the Energy Materials Center at Cornell (emc2). Y.-E. Sung acknowledges the nancial support by IBS-R006-A2.
Publisher Copyright:
© The Royal Society of Chemistry 2018.
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering