Materials Advancements in Solid-state Inorganic Electrolytes for Highly Anticipated All Solid Li-ion Batteries

The superior characteristics exhibited by solid-state Li-ion batteries (ASSLIBs) have solidified their status as an excellent alternative in the realm of battery development. With noteworthy improvements in safety, good energy density, and prolonged lifespan, ASSLIBs have emerged as a compelling substitute for conventional liquid electrolyte batteries. Solid inorganic electrolytes (SIEs) having high ionic conductivity, a broad electrochemical stability window, and compatibility with Lithium (Li) metal anodes, have become appealing ingredients for ASSLIBs. SIEs present a distinctive prospect for attaining good energy density and faster charging capabilities while concurrently mitigating the safety risks linked to combustible liquid electrolytes. This article has summarized the recent advances in SIEs for ASSLIBs and their useful invasions in this field. The review started with a discussion of the fundamental properties and mechanisms of SIEs. Then, the current progress in developing various kinds of SIEs is comprehensively discussed with relevant case studies. The expected Li-ions transport mechanisms are briefly analyzed in each type with specific examples. The inclusive overview provided in this article is highly anticipated to draw interest from a wide range of disciplines, specifically electrolyte material designing for energy storage devices.