Elucidating the Effects of LiF on Lithium Metal Anodes.

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-09-29 DOI:10.1021/acs.nanolett.5c03437

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

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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 Li₂O within the SEI, forms LiF/Li₂O interfaces, exhibits non-negligible solubility with spontaneous dissolution-reprecipitation behavior in the electrolyte, and works synergistically with Li₂O. 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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阐明LiF对锂金属阳极的影响。

LiF被广泛认为是锂金属阳极固-电解质界面相（SEI）的重要组成部分。然而，生命在SEI中的作用仍然难以捉摸。在此，我们研究了受LiF影响的SEI的演变，并确定了阐明LiF对锂金属阳极功能特征的明显特征。通过综合实证和理论分析，我们发现LiF在SEI内富集Li2O，形成LiF/Li2O界面，在电解质中表现出不可忽视的溶解性，具有自发溶解-再沉淀行为，并与Li2O协同作用。这些发现揭示了LiF对锂金属阳极的影响以及LiF在SEI中的排列特征。通过整合有关liff的主要发现，阐述了liff的预测工作机制。总的来说，我们对锂离子电池的研究提供了有价值的见解，促进了对SEI和间相纳米结构的理解，有助于开发更可靠和实用的锂金属电池。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.