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The promise of alloy anodes for solid-state batteries
Joule ( IF 39.8 ) Pub Date : 2022-06-09 , DOI: 10.1016/j.joule.2022.05.016
John A. Lewis, Kelsey A. Cavallaro, Yuhgene Liu, Matthew T. McDowell

Solid-state batteries are a next-generation technology that could feature improved safety and energy density, but reliably integrating high-capacity electrode materials to enable high energy while retaining stable long-term cycling remains a challenge. Anode materials that alloy with lithium, such as silicon, tin, and aluminum, offer high capacity that can yield high-energy battery cells. The use of alloy anodes in solid-state batteries potentially offers major mechanistic benefits compared to other anode contenders and battery systems, such as lithium metal in solid-state architectures or alloys in liquid-electrolyte batteries. This perspective discusses key advantages of alloy anode materials for solid-state batteries, including the avoidance of the short circuiting observed with lithium metal and the chemo-mechanical stabilization of the solid-electrolyte interphase. We further discuss open research questions and challenges in engineering alloy-anode-based solid-state batteries, with the goal of advancing our understanding and control of alloy anode materials within solid-state architectures toward commercial application.



中文翻译:

固态电池合金负极的前景

固态电池是下一代技术,可以提高安全性和能量密度,但可靠地集成高容量电极材料以实现高能量同时保持稳定的长期循环仍然是一个挑战。与锂合金的阳极材料,如硅、锡和铝,具有高容量,可以生产高能电池。与其他阳极竞争者和电池系统(例如固态结构中的锂金属或液体电解质电池中的合金)相比,在固态电池中使用合金阳极可能会提供主要的机械优势。该观点讨论了用于固态电池的合金负极材料的关键优势,包括避免使用锂金属观察到的短路和固体电解质界面的化学机械稳定。我们进一步讨论了工程合金阳极固态电池中的开放研究问题和挑战,目的是促进我们对固态结构中合金阳极材料的理解和控制,使其走向商业应用。

更新日期:2022-06-09
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