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

158 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 & 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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title = "An effective approach to protect lithium anode and improve cycle performance for Li-S batteries",

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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author = "Feng Wu and Ji Qian and Renjie Chen and Jun Lu and Li Li and Huiming Wu and Junzheng Chen and Teng Zhao and Yusheng Ye and Khalil Amine",

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AU - Wu, Feng

AU - Qian, Ji

AU - Chen, Renjie

AU - Lu, Jun

AU - Li, Li

AU - Wu, Huiming

AU - Chen, Junzheng

AU - Zhao, Teng

AU - Ye, Yusheng

AU - Amine, Khalil

PY - 2014/9/10

Y1 - 2014/9/10

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.

KW - LiODFB

KW - electrochemistry

KW - electrolyte

KW - lithium anode

KW - lithium-sulfur batteries

KW - passivation layer

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JO - ACS applied materials & interfaces

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ER -

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

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Keywords

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