Progress and perspectives on typical inorganic solid-state electrolytes

• Published in: Journal of alloys and compounds 2021-12, Vol.885, p.161013, Article 161013
• Main Authors: Yu, Tianwei, Yang, Xiaofei, Yang, Rong, Bai, Xiangtao, Xu, Guofeng, Zhao, Shangqian, Duan, Yi, Wu, Yanlong, Wang, Jiantao
• Format: Article
• Language: English
• Subjects: All-solid-state lithium batteries; Electrolytes; Flux density; Halide; Inorganic solid-state electrolytes; Ion currents; Lithium; Lithium batteries; Material properties; Molten salt electrolytes; Oxide; Room temperature; Solid electrolytes; Solid state; Sulfide
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2021.161013

All-solid-state lithium batteries (ASSLBs) have received increasing attention due to the advantages of safety and energy density. The solid-state electrolytes(SSEs) is the main components in ASSLBs. Especially, in recent years, Inorganic SSEs have made a progress. Inorganic SSEs systems mainly include oxide SSEs, sulfide SSEs, and halide SSEs. The typical inorganic SSEs have an ionic conductivity of ~10−3 S/cm at room temperature, which is close to the level of ionic conductivity of liquid electrolytes. Herein, a comprehensive understanding of the development, material properties, and challenges of the inorganic SSEs above is provided. Personal viewpoints of SSEs research are presented. A satisfactory solid‐state electrolyte should have high stability, lithium ion conductivity and machinability. To achieve these excellent properties in solid state electrolytes, a variety of modification strategies have been studied and applied. [Display omitted]