Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

• Published in: Advanced materials (Weinheim) Vol. 31; no. 44; pp. e1901131 - n/a
• Main Authors: Zhang, Qing, Cao, Daxian, Ma, Yi, Natan, Avi, Aurora, Peter, Zhu, Hongli
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.11.2019
• Subjects: Atomic radius; characterization; Chemical synthesis; Electrolytes; Electronegativity; Energy storage; Interface stability; interfaces; Ion currents; Materials science; metal sulfides; Molten salt electrolytes; Organic chemistry; Solid electrolytes; solid‐state batteries; stability; synthesis; synthesis; solid-state batteries; interfaces; metal sulfides; characterization; stability
• ISSN: 0935-9648; 1521-4095; 1521-4095
• DOI: 10.1002/adma.201901131

Due to their high ionic conductivity and adeciduate mechanical features for lamination, sulfide composites have received increasing attention as solid electrolyte in all‐solid‐state batteries. Their smaller electronegativity and binding energy to Li ions and bigger atomic radius provide high ionic conductivity and make them attractive for practical applications. In recent years, noticeable efforts have been made to develop high‐performance sulfide solid‐state electrolytes. However, sulfide solid‐state electrolytes still face numerous challenges including: 1) the need for a higher stability voltage window, 2) a better electrode–electrolyte interface and air stability, and 3) a cost‐effective approach for large‐scale manufacturing. Herein, a comprehensive update on the properties (structural and chemical), synthesis of sulfide solid‐state electrolytes, and the development of sulfide‐based all‐solid‐state batteries is provided, including electrochemical and chemical stability, interface stabilization, and their applications in high performance and safe energy storage. A comprehensive update on the properties (structural and chemical) and synthesis of sulfide solid‐state electrolytes, and the development of sulfide‐based all‐solid‐state lithium‐based batteries is given, including electrochemical and chemical stabilities, potential methods for scalable manufacturing, and their applications in high‐performance and safe energy storage.