An effective approach to protect lithium anode and improve cycle performance for Li-S batteries

Feng Wu; Ji Qian; Renjie Chen; Jun Lu; Li Li; Huiming Wu; Junzheng Chen; Teng Zhao; Yusheng Ye; Khalil Amine

doi:10.1021/am504345s

An effective approach to protect lithium anode and improve cycle performance for Li-S batteries

Feng Wu, Ji Qian, Renjie Chen^*, Jun Lu, Li Li, Huiming Wu, Junzheng Chen, Teng Zhao, Yusheng Ye, Khalil Amine

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

163 Citations (Scopus)

Abstract

Lithium oxalyldifluoroborate (LiODFB) has been investigated as an organic electrolyte additive to improve the cycling performance of Li-S batteries. Cell test results demonstrate that an appropriate amount of LiODFB added into the electrolyte leads to a high Coulombic efficiency. Analyses by energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and the density functional theory showed that LiODFB promotes the formation of a LiF-rich passivation layer on the lithium metal surface, which not only blocks the polysulfide shuttle, but also stabilizes the lithium surface.

Original language	English
Pages (from-to)	15542-15549
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	17
DOIs	https://doi.org/10.1021/am504345s
Publication status	Published - 10 Sept 2014

Keywords

LiODFB
electrochemistry
electrolyte
lithium anode
lithium-sulfur batteries
passivation layer

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10.1021/am504345s

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Wu, F., Qian, J., Chen, R., Lu, J., Li, L., Wu, H., Chen, J., Zhao, T., Ye, Y., & Amine, K. (2014). An effective approach to protect lithium anode and improve cycle performance for Li-S batteries. ACS Applied Materials and Interfaces, 6(17), 15542-15549. https://doi.org/10.1021/am504345s

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abstract = "Lithium oxalyldifluoroborate (LiODFB) has been investigated as an organic electrolyte additive to improve the cycling performance of Li-S batteries. Cell test results demonstrate that an appropriate amount of LiODFB added into the electrolyte leads to a high Coulombic efficiency. Analyses by energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and the density functional theory showed that LiODFB promotes the formation of a LiF-rich passivation layer on the lithium metal surface, which not only blocks the polysulfide shuttle, but also stabilizes the lithium surface.",

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AU - Li, Li

AU - Wu, Huiming

AU - Chen, Junzheng

AU - Zhao, Teng

AU - Ye, Yusheng

AU - Amine, Khalil

PY - 2014/9/10

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N2 - Lithium oxalyldifluoroborate (LiODFB) has been investigated as an organic electrolyte additive to improve the cycling performance of Li-S batteries. Cell test results demonstrate that an appropriate amount of LiODFB added into the electrolyte leads to a high Coulombic efficiency. Analyses by energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and the density functional theory showed that LiODFB promotes the formation of a LiF-rich passivation layer on the lithium metal surface, which not only blocks the polysulfide shuttle, but also stabilizes the lithium surface.

AB - Lithium oxalyldifluoroborate (LiODFB) has been investigated as an organic electrolyte additive to improve the cycling performance of Li-S batteries. Cell test results demonstrate that an appropriate amount of LiODFB added into the electrolyte leads to a high Coulombic efficiency. Analyses by energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and the density functional theory showed that LiODFB promotes the formation of a LiF-rich passivation layer on the lithium metal surface, which not only blocks the polysulfide shuttle, but also stabilizes the lithium surface.

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KW - lithium-sulfur batteries

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An effective approach to protect lithium anode and improve cycle performance for Li-S batteries

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Keywords

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