Wang Huan-Feng, Wang Xiao-Xue, Li Fei, Xu Ji-Jing
College of Chemical and Food Zhengzhou University of Technology Zhengzhou 450044 P. R. China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China.
Small Sci. 2022 Mar 23;2(5):2200005. doi: 10.1002/smsc.202200005. eCollection 2022 May.
Nonaqueous Li-air batteries with ultrahigh theoretical energy density have attracted much attention in the development of clean energy technology. However, a series of safety challenges including the flammable, volatile organic liquid electrolyte, together with the electrolyte decomposition have greatly hindered their practical development. Solid-state electrolytes with superior mechanical strength, good chemical stability under open-air system, wide electrochemical window, nonflammable properties provide a feasible strategy to overcome the safety issues and achieve a stable, applicable Li-air battery system. In this article, a comprehensive review of solid-state Li-air batteries is provided. Based on the overall understanding of the necessity of developing a solid-state Li-air battery and ion migration mechanism in solid electrolytes, the construction strategies of solid-state Li-air battery including cathode fabrication, Li anode optimization, electrolyte design, and the interface regulation between electrodes and electrolyte are presented. The prospects of solid-state Li-air batteries are also proposed at the end. It is expected that this review would provide a systematic understanding and theoretical guidance in designing and developing safe, stable, applicable solid-state Li-air batteries.
具有超高理论能量密度的非水锂空气电池在清洁能源技术发展中备受关注。然而，一系列安全挑战，包括易燃、易挥发的有机液体电解质以及电解质分解，极大地阻碍了它们的实际发展。具有优异机械强度、在开放空气系统下良好化学稳定性、宽电化学窗口、不可燃特性的固态电解质为克服安全问题并实现稳定、适用的锂空气电池系统提供了一种可行策略。本文对固态锂空气电池进行了全面综述。基于对开发固态锂空气电池的必要性以及固体电解质中离子迁移机制的全面理解，介绍了固态锂空气电池的构建策略，包括阴极制造、锂阳极优化、电解质设计以及电极与电解质之间的界面调控。最后还提出了固态锂空气电池的前景。期望本综述能为设计和开发安全、稳定、适用的固态锂空气电池提供系统的理解和理论指导。
