Recent Progress in Designing Stable Composite Lithium Anodes with Improved Wettability,Advanced Science

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Recent Progress in Designing Stable Composite Lithium Anodes with Improved Wettability
Advanced Science ( IF 14.3 ) Pub Date : 2020-10-11 , DOI: 10.1002/advs.202002212
Zi-Jian Zheng ₁ , Huan Ye ₂ , Zai-Ping Guo ₃

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Lithium (Li) is a promising battery anode because of its high theoretical capacity and low reduction potential, but safety hazards that arise from its continuous dendrite growth and huge volume changes limit its practical applications. Li can be hosted in a framework material to address these key issues, but methods to encage Li inside scaffolds remain challenging. The melt infusion of molten Li into substrates has attracted enormous attention in both academia and industry because it provides an industrially adoptable technology capable of fabricating composite Li anodes. In this review, the wetting mechanism driving the spread of liquefied Li toward a substrate is discussed. Following this, various strategies are proposed to engineer stable Li metal composite anodes that are suitable for liquid and solid‐state electrolytes. A general conclusion and a perspective on the current limitations and possible future research directions for constructing composite Li anodes for high‐energy lithium metal batteries are presented.

中文翻译：

设计具有改善润湿性的稳定复合锂阳极的最新进展

锂（Li）因其高理论容量和低还原电位而成为一种很有前景的电池负极，但其连续的枝晶生长和巨大的体积变化所产生的安全隐患限制了其实际应用。Li 可以托管在框架材料中来解决这些关键问题，但将 Li 限制在支架内的方法仍然具有挑战性。将熔融锂熔体注入基材中引起了学术界和工业界的极大关注，因为它提供了一种工业上可采用的能够制造复合锂负极的技术。在这篇综述中，讨论了驱动液化锂向基底扩散的润湿机制。此后，提出了各种策略来设计适用于液态和固态电解质的稳定的锂金属复合阳极。对构建高能锂金属电池复合锂负极的当前局限性和未来可能的研究方向提出了一般性结论和展望。

更新日期：2020-11-19

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