锂空气电池定向固态电解质设计的最新进展和挑战,Battery Energy

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锂空气电池定向固态电解质设计的最新进展和挑战
Battery Energy ( IF 9.0 ) Pub Date : 2022-08-08 , DOI: 10.1002/bte2.20220014
Yajun Ding ₁ , Yuejiao Li _{1,

2} , Zhong‐Shuai Wu _{1,

3}

Affiliation

具有超高能量密度和安全性的固态锂空气电池有望用于远程电动汽车和特殊电子产品。然而，开发具有高离子电导率、界面相容性和稳定性以提高可逆性、增加稳定的三相边界并在开放系统中保护锂负极的锂空气电池导向固态电解质 (SSE) 具有挑战性极大地阻碍了他们的应用。在此，我们系统地总结了近期在锂空气电池 SSE 方面取得的进展，并详细描述了 SSE|空气正极界面和 SSE|Li 负极界面的基本特征。首先，锂空气电池中 SSEs 在离子/电子电导率、化学/电化学/热稳定性、机械强度、根据三种类型的SSEs简要介绍了界面相容性和界面相容性：无机、有机和杂化SSEs。其次，详细描述了将催化位点、多孔结构和电子导体与 SSE 相结合以增强 SSE|空气阴极的三相边界以提高库仑效率的关键策略。此外，保护锂金属免受 H详细概述了 SSE|Li 阳极上用于确保安全的₂ O、CO ₂、O _{2和氧化还原介体。}最后，提出了先进固态锂空气电池三维结构集成、外场辅助和操作表征三个重要主题的未来机遇和展望。

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Recent advances and challenges in the design of Li–air batteries oriented solid-state electrolytes

Solid-state Li–air batteries with ultrahigh energy density and safety are promising for long-range electric vehicles and special electronics. However, the challenging issues of developing Li–air battery-oriented solid-state electrolytes (SSEs) with high ionic conductivity, interfacial compatibility, and stability to boost reversibility, increase stable triple-phase boundaries, and protect the Li anode in an open system substantially impede their applications. Herein, we systematically summarize the recent progress achieved in terms of SSEs for Li–air batteries, and describe in detail the basic characteristics of SSE|air cathode interfaces and SSE|Li anode interfaces. First, the major characteristics of SSEs in Li–air batteries in terms of ionic/electronic conductivity, chemical/electrochemical/thermal stability, mechanical strength, and interfacial compatibility are briefly introduced according to three types of SSEs: inorganic, organic, and hybrid SSEs. Second, key strategies of integrating catalytic sites, porous structures, and electronic conductors with SSEs to enhance triple-phase boundaries at the SSE|air cathode for improving Coulombic efficiency are described in detail. Moreover, the protection of Li metal from H₂O, CO₂, O₂, and redox mediators at the SSE|Li anode to ensure safety is elaborately overviewed. Finally, future opportunities and perspectives on three important topics of three-dimensional structural integration, external field assistance, and operando characterizations are proposed for advanced solid-state Li–air batteries.

更新日期：2022-08-08

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