构建稳定锂金属负极氟化SEI的研究进展

张迪; 吕鹏飞; 秦巍; 何欣; 贺元骅

doi:10.1007/s12613-024-2996-3

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文章导航 > 矿物冶金与材料学报（英文） > 2025 > 二校

Di Zhang, Pengfei Lv, Wei Qin, Xin He, and Yuanhua He, Recent progress in constructing fluorinated solid–electrolyte interphases for stable lithium metal anodes, Int. J. Miner. Metall. Mater.,(2025). https://doi.org/10.1007/s12613-024-2996-3

Cite this article as:

Di Zhang, Pengfei Lv, Wei Qin, Xin He, and Yuanhua He, Recent progress in constructing fluorinated solid–electrolyte interphases for stable lithium metal anodes, Int. J. Miner. Metall. Mater.,(2025). https://doi.org/10.1007/s12613-024-2996-3

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构建稳定锂金属负极氟化SEI的研究进展

1)
中国民用航空飞行学院民航安全工程学院, 民机火灾科学与安全工程四川省重点实验室, 广汉 618307, 中国
2)
四川大学化学工程学院, 成都 610065, 中国

通讯作者:
何欣 E-mail: xinhe@scu.edu.cn

贺元骅 E-mail: heyuanhua@cafuc.edu.cn

文章亮点

(1) 系统地回顾了优化 LiF 钝化界面以保护锂金属阳极的研究

(2) 重点介绍了氟化SEI中四类与LiF起协同作用以增强 SEI 性能的成分

(3) 总结并提出了未来氟化界面材料协同与结构设计的建议

中文摘要

高能量密度和高比容量使锂金属电池 (LMB)成为一种极具前途的储能解决方案。然而，在长循环过程中的锂(Li)的不均匀沉积和固体电解质界面(SEI)的破碎会导致枝晶生长而穿透隔膜，进一步带来短路风险。因此，形成稳定的SEI对电池稳定长循环至关重要。优异的富氟SEI因其能有效钝化电极、调节锂沉积和抑制电解质腐蚀而备受关注，了解现有氟化SEI的结构组分和制备方法对于进一步优化锂金属负极性能是十分必要的。本文回顾了近年来优化 LiF 钝化界面以保护锂金属负极的研究，重点介绍了氟化SEI中四种与LiF起协同作用以增强 SEI 性能的成分。其中，将化合物与LiF复合可以进一步提升SEI的机械强度和离子电导率，将金属与LiF复合显著改善了SEI/负极界面的电化学性能，重点是降低了电子隧穿概率。此外，聚合物与LiF复合可相对综合的改善界面韧性和离子电导率，但在长循环下的保持结构稳定性仍是未来应关注的。锂基合金层与LiF复合提高了表面能和亲锂性的同时，枝晶生长和体积膨胀的挑战仍然存在。总之，本文强调了界面结构在 LMB 中的关键作用，并为未来负极界面的设计和开发工作提供了全面的指导。

关键词:

Review

Recent progress in constructing fluorinated solid–electrolyte interphases for stable lithium metal anodes

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Abstract

Abstract

Lithium metal batteries (LMBs) are emerging as a promising energy storage solution owing to their high energy density and specific capacity. However, the non-uniform plating of lithium and the potential rupture of the solid–electrolyte interphase (SEI) during extended cycling use may result in dendrite growth, which can penetrate the separator and pose significant short-circuit risks. Forming a stable SEI is essential for the long-term operation of the batteries. Fluorine-rich SEI has garnered significant attention for its ability to effectively passivate electrodes, regulate lithium deposition, and inhibit electrolyte corrosion. Understanding the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode performance. This paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal anodes. It focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI performance. For instance, combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the SEI. Integrating metals with LiF significantly improves electrochemical performance at the SEI/anode interface, with a necessary focus on reducing electron tunneling risks. Additionally, incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity, though maintaining structural stability over long cycles remains a critical area for future research. Although alloys combined with LiF increase surface energy and lithium affinity, challenges such as dendrite growth and volume expansion persist. In summary, this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.
- LiF;
- lithium metal anodes;
- solid–electrolyte interphase;
- interface;
- cycling stability

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