Mao Yuezhen, Liu Jilong, Chen Wei, Zhang Wei, Sun Chunwen
School of Chemical & Environmental Engineering, China University of Mining and Technology-Beijing, Beijing 100083, P. R. China.
Mater Horiz. 2025 Aug 11;12(16):6082-6123. doi: 10.1039/d5mh00583c.
Solid-state lithium metal batteries (SSLMBs) are recognized as the most efficient and promising energy storage devices due to their enhanced safety and high energy density. As a key component in solid-state lithium metal batteries, solid-state electrolytes (SSEs) are critical for the development of batteries. Garnet-type SSEs have been employed as the most critical component of inorganic electrolytes and fillers for composite electrolytes. To date, significant research on garnet-based electrolytes has been carried out and numerous breakthrough results have been achieved. However, poor interfacial contacts between garnet-based electrolytes and electrodes still lead to Li dendrite growth and unsatisfactory electrochemical performance of batteries. Herein, recent developments of the interfaces for garnet based SSLMBs, including the strategies of garnet types and composite electrolytes as well as Li metal anode stabilizations are presented. Moreover, interfacial engineering strategies between electrolytes and cathodes are also discussed. Meanwhile, advanced techniques and electrochemical approaches for interfacial characterization are also introduced. This work provides insights into the interfacial engineering of garnet-based electrolytes, contributing to the understanding of interfaces in solid-state batteries.
固态锂金属电池（SSLMBs）因其增强的安全性和高能量密度而被认为是最有效且最具前景的储能设备。作为固态锂金属电池的关键组件，固态电解质（SSEs）对电池的发展至关重要。石榴石型固态电解质已被用作无机电解质和复合电解质填料的最关键组件。迄今为止，已对石榴石基电解质开展了大量研究，并取得了众多突破性成果。然而，石榴石基电解质与电极之间不良的界面接触仍会导致锂枝晶生长以及电池的电化学性能不尽人意。在此，介绍了石榴石基固态锂金属电池界面的最新进展，包括石榴石类型和复合电解质的策略以及锂金属负极的稳定化。此外，还讨论了电解质与正极之间的界面工程策略。同时，还介绍了用于界面表征的先进技术和电化学方法。这项工作为石榴石基电解质的界面工程提供了见解，有助于理解固态电池中的界面。
