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Improved lifetime of Na-Ion batteries with a water-scavenging electrolyte additive
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Chen, Lin, Kishore, Brij, Song, Tengfei, Walker, Marc, Dancer, Claire E. J. and Kendrick, Emma (2022) Improved lifetime of Na-Ion batteries with a water-scavenging electrolyte additive. Frontiers in Energy Research, 10 . 925430. doi:10.3389/fenrg.2022.925430 ISSN 2296-598X.
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Official URL: https://doi.org/10.3389/fenrg.2022.925430
Abstract
The lifetime of sodium-ion batteries is strongly affected by degradation species and contaminants such as H2O and HF, which are produced during formation and cycling. In this work, the use of low levels of N, N-diethyltrimethylsilylamine (DETMSA), as an electrolyte additive, shows an improvement in the stability and cycle life of a hard carbon vs. layered oxide sodium-ion battery. Approximately 80% of the capacity is retained after 500 cycles, which is almost double the performance of the standard electrolyte. The additive works by reducing the surface ageing constituents, as observed through XPS of the surfaces and the change in resistance after cycling. DETMSA is slowly consumed over time; however, the extensive improvement in cycle life shows that low level of impurities and degradation species have a big impact upon cycle life.
Item Type: | Journal Article | |||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
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SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Sodium ion batteries, Electrolytes, Energy storage, Electric batteries -- Materials | |||||||||
Journal or Publication Title: | Frontiers in Energy Research | |||||||||
Publisher: | Frontiers Media S.A. | |||||||||
ISSN: | 2296-598X | |||||||||
Official Date: | 12 July 2022 | |||||||||
Dates: |
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Volume: | 10 | |||||||||
Article Number: | 925430 | |||||||||
DOI: | 10.3389/fenrg.2022.925430 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 3 August 2022 | |||||||||
Date of first compliant Open Access: | 3 August 2022 | |||||||||
RIOXX Funder/Project Grant: |
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