Towards practical all-solid-state batteries: structural engineering innovations for sulfide-based solid electrolytes

Abstract

Sulfide-based solid electrolytes have emerged as pivotal components for the advancement of next-generation all-solid-state batteries, owing to the battery safety and higher energy density. This paper reviews the recent material innovations in sulfide-based solid electrolytes, focusing on enhancing their ionic conductivities based on an understanding of their crystal structures. Through a comprehensive analysis of current research trends and future perspectives, this review aims to provide a roadmap for the development of more robust and efficient sulfide-based solid electrolytes, which contribute to the realization of safer and higher-performance all-solid-state batteries.

Keywords

All-solid-state batteries / sulfide solid electrolyte / super ionic conductor / thio-germanate

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