Interface Aspects in All?Solid?State Li?Based Batteries Reviewed

Extensive efforts have been made to improve the Li-ionic conductivity of solid electrolytes (SE) for developing promising all-solid-state Li-based batteries (ASSB). Recent studies suggest that minimizing existing interface problems is even more important than maximizing SE. Interfaces are essential in ASSB, and their properties significantly influence battery performance. Interface problems, arising from both physical (electro)chemical material properties, can inhibit transport electrons Li-ions ASSB. Consequently, may result interlayer formation, high impedances, immobilization moveable Li-ions, loss active host sites available accommodate Li-dendrite all causing significant storage capacity losses ultimately failures. The characteristic differences interfaces between liquid- solid-type presented here. types, origin, chemical structures, time evolution, complex interrelations various factors, interfacial tailoring approaches reviewed. Furthermore, recent advances interface-sensitive or depth-resolved analytical tools provide mechanistic insights into formation strategies tailor composition, discussed.