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Interface Engineering for Lithium Metal Anodes in Liquid Electrolyte
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2020-07-30 , DOI: 10.1002/aenm.202001257
Pengbo Zhai 1 , Lixuan Liu 1 , Xiaokang Gu 1 , Tianshuai Wang 1 , Yongji Gong 1
Affiliation  

Interfacial chemistry between lithium metal anodes and electrolytes plays a vital role in regulating the Li plating/stripping behavior and improving the cycling performance of Li metal batteries. Constructing a stable solid electrolyte interphase (SEI) on Li metal anodes is now understood to be a requirement for progress in achieving feasible Li‐metal batteries. Recently, the application of novel analytical tools has led to a clearer understanding of composition and the fine structure of the SEI. This further promoted the development of interface engineering for stable Li metal anodes. In this review, the SEI formation mechanism, conceptual models, and the nature of the SEI are briefly summarized. Recent progress in probing the atomic structure of the SEI and elucidating the fundamental effect of interfacial stability on battery performance are emphasized. Multiple factors including current density, mechanical strength, operating temperature, and structure/composition homogeneity that affect the interfacial properties are comprehensively discussed. Moreover, strategies for designing stable Li‐metal/electrolyte interfaces are also reviewed. Finally, new insights and future directions associated with Li‐metal anode interfaces are proposed to inspire more revolutionary solutions toward commercialization of Li metal batteries.

中文翻译:

液体电解质中锂金属阳极的界面工程

锂金属阳极与电解质之间的界面化学在调节Li镀层/剥离行为和改善Li金属电池的循环性能方面起着至关重要的作用。现在,人们认为在锂金属阳极上构建稳定的固态电解质中间相(SEI)是实现可行的锂金属电池的进展要求。最近,新型分析工具的应用使人们对SEI的成分和精细结构有了更清晰的了解。这进一步促进了稳定锂金属阳极界面工程的发展。在本文中,对SEI的形成机制,概念模型和SEI的性质进行了简要总结。强调了在探索SEI的原子结构以及阐明界面稳定性对电池性能的基本影响方面的最新进展。全面讨论了影响界面性质的多个因素,包括电流密度,机械强度,工作温度和结构/组成均匀性。此外,还回顾了设计稳定的锂金属/电解质界面的策略。最后,提出了与锂金属阳极界面相关的新见解和未来方向,以激发更多革命性的解决方案,以实现锂金属电池的商业化。还回顾了设计稳定的锂金属/电解质界面的策略。最后,提出了与锂金属阳极界面相关的新见解和未来方向,以激发更多革命性的解决方案,以实现锂金属电池的商业化。还回顾了设计稳定的锂金属/电解质界面的策略。最后,提出了与锂金属阳极界面相关的新见解和未来方向,以激发更多革命性的解决方案,以实现锂金属电池的商业化。
更新日期:2020-09-08
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