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.
Authors
- Wenbo Zhang (ORCID: https://orcid.org/0000-0002-0828-594X)
- Philaphon Sayavong (ORCID: https://orcid.org/0000-0001-7605-8194)
- Solomon T. Oyakhire (ORCID: https://orcid.org/0000-0002-3189-5949)
- Huaxin Gong (ORCID: https://orcid.org/0000-0002-2493-0793)
- Junyoung Lee
- Zhiao Yu (ORCID: https://orcid.org/0000-0001-8746-1640)
- Kristin Aslaug Persson (ORCID: https://orcid.org/0000-0003-2495-5509)
- Yuelang Chen (ORCID: https://orcid.org/0000-0002-5249-0596)
- Mun Sek Kim (ORCID: https://orcid.org/0000-0003-0918-3870)
- Sang Cheol Kim (ORCID: https://orcid.org/0000-0002-1749-8277)
- Il Rok Choi (ORCID: https://orcid.org/0000-0001-5426-2434)
- Jun Ho Lee (ORCID: https://orcid.org/0000-0001-8598-7884)
- Jian Qin (ORCID: https://orcid.org/0000-0001-6271-068X)
- Rong Xu (ORCID: https://orcid.org/0000-0002-3694-595X)
- Sanzeeda Baig Shuchi (ORCID: https://orcid.org/0000-0001-9802-223X)
- Zewen Zhang (ORCID: https://orcid.org/0000-0002-4909-4330)
- Zhenan Bao (ORCID: https://orcid.org/0000-0002-0972-1715)
- Jingyang Wang (ORCID: https://orcid.org/0000-0003-3307-5132)
Institutions
- 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)
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