Luo Enquan, Ren Xuemei, He Miao, Liu Shen, Yang Hui, Xia Li, Chen Dongjiang, Yan Chaoyi, Hu Yin, Lei Tianyu, Yan Yichao, Chen Wei
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China.
Nanyang technological university, 50 Nayang avenue, Singapore, 639798, Singapore.
Small. 2025 Apr;21(16):e2412723. doi: 10.1002/smll.202412723. Epub 2025 Mar 24.
Sulfide-based all-solid-state batteries (ASSBs) have ushered in a new era of energy storage technology, offering the tantalizing prospect of unprecedented energy density and safety. However, the poor electrode-electrolyte interface between Li anodes and sulfide solid electrolytes has hindered its practical application. In this review, the primary focus lies in the current fundamental understanding, challenges, and optimization strategies regarding the interface chemistries between sulfide solid electrolytes and Li anode. First, an in-depth discussion is conducted and provides a detailed summary of the interfacial challenges that exist between the Li anode and sulfide solid electrolytes. Among these challenges, poor interfacial compatibility and stability stand out as the two crucial issues. Subsequently, effective approaches are systematically explored to surmount these issues. These encompass the component optimization and structural design of the bulk anode, doping and coating strategies of the sulfide solid electrolytes, and interface design between the Li anode and sulfide solid electrolytes. Finally, the insights are present into the limitations of current studies, perspectives, and recommendations for the further development of sulfide-based solid-state batteries, aiming to offer a comprehensive and enlightening overview for interface engineering, which is of great significance for the integration of applicable all-solid-state Li metal batteries (ASSLMBs).
硫化物基全固态电池（ASSBs）开创了储能技术的新纪元，带来了前所未有的能量密度和安全性这一诱人前景。然而，锂阳极与硫化物固体电解质之间较差的电极-电解质界面阻碍了其实际应用。在本综述中，主要关注的是当前关于硫化物固体电解质与锂阳极之间界面化学的基本认识、挑战及优化策略。首先，进行了深入讨论并详细总结了锂阳极与硫化物固体电解质之间存在的界面挑战。在这些挑战中，界面相容性和稳定性差是两个关键问题。随后，系统地探索了克服这些问题的有效方法。这些方法包括本体阳极的成分优化和结构设计、硫化物固体电解质的掺杂和涂层策略以及锂阳极与硫化物固体电解质之间的界面设计。最后，阐述了当前研究的局限性、展望以及对硫化物基固态电池进一步发展的建议，旨在为界面工程提供全面且具有启发性的概述，这对于适用的全固态锂金属电池（ASSLMBs）的集成具有重要意义。
