Elucidating the Effects of LiF on Lithium Metal Anodes

LiF is widely recognized as a crucial component of a solid-electrolyte interphase (SEI) for Li metal anodes. However, the roles of LiF in the SEI remain elusive. Herein, we examined the evolution of SEI influenced by LiF and identified distinct features that elucidate functional characteristics of LiF for Li metal anodes. Through comprehensive empirical and theoretical analyses, we found that LiF enriches Li<sub>2</sub>O within the SEI, forms LiF/Li<sub>2</sub>O interfaces, exhibits non-negligible solubility with spontaneous dissolution-reprecipitation behavior in the electrolyte, and works synergistically with Li<sub>2</sub>O. These findings shed light on the effects of LiF on Li metal anodes and the arrangement characteristic of LiF within the SEI. By integrating key discoveries regarding LiF, a projected working mechanism for LiF is illustrated. Overall, our study on LiF provides valuable insights that advance the understanding of the SEI and interphase nanostructures, contributing to the development of more reliable and practical Li metal batteries.

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Publication Details

Journal
Nano Letters
Published
2025-09-29
DOI
https://doi.org/10.1021/acs.nanolett.5c03437
Citations
9
Primary Topic
Advanced Battery Materials and Technologies
Type
article
Field-Weighted Citation Impact
6.57
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article

Elucidating the Effects of LiF on Lithium Metal Anodes

Wenbo Zhang, Philaphon Sayavong, Solomon T. Oyakhire, Huaxin Gong et al.
9 citations
Nano Letters
Advanced Battery Materials and Technologies
6.57
article

Elucidating the Effects of LiF on Lithium Metal Anodes

Wenbo Zhang, Philaphon Sayavong, Solomon T. Oyakhire, Huaxin Gong, Junyoung Lee, Zhiao Yu, Kristin Aslaug Persson, Yuelang Chen, Mun Sek Kim, Sang Cheol Kim, Il Rok Choi, Jun Ho Lee, Jian Qin, Rong Xu, Sanzeeda Baig Shuchi, Zewen Zhang, Zhenan Bao, Jingyang Wang
article en
9 citations

Abstract

LiF is widely recognized as a crucial component of a solid-electrolyte interphase (SEI) for Li metal anodes. However, the roles of LiF in the SEI remain elusive. Herein, we examined the evolution of SEI influenced by LiF and identified distinct features that elucidate functional characteristics of LiF for Li metal anodes. Through comprehensive empirical and theoretical analyses, we found that LiF enriches Li<sub>2</sub>O within the SEI, forms LiF/Li<sub>2</sub>O interfaces, exhibits non-negligible solubility with spontaneous dissolution-reprecipitation behavior in the electrolyte, and works synergistically with Li<sub>2</sub>O. These findings shed light on the effects of LiF on Li metal anodes and the arrangement characteristic of LiF within the SEI. By integrating key discoveries regarding LiF, a projected working mechanism for LiF is illustrated. Overall, our study on LiF provides valuable insights that advance the understanding of the SEI and interphase nanostructures, contributing to the development of more reliable and practical Li metal batteries.

Nano LettersVol. 25(40)
Lawrence Berkeley National Laboratory (US), Nanyang Technological University (SG), Beijing Normal University (CN), Energy Technologies Institute (GB), SLAC National Accelerator Laboratory (US), University of California System (US), University of California, Berkeley (US), Stanford University (US)
Openalex Percentile: Top 3%
Advanced Battery Materials and Technologies
6.57
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