Kyu Moon Kwon

Graphical Abstract Composition-Controlled Cathode Protective Layer The cover illustrates sulfide-based all-solid-state batteries employing cathode protective layers coated via powder-atomic layer deposition. The lithium zirconium oxide protective layers exhibit composition-dependent ionic and electronic conductivities, which directly govern cell performance.

1 Introduction Sulfide-based solid electrolytes (SEs) have attracted significant attention for use in next-generation energy storage systems because of their high ionic conductivities of up to 1 mS cm−1 and compatibility with cold sintering processes.[1, 2] However, their commercialization is hindered by several technical challenges, among which interfacial side reactions between cathode active materials (CAMs; e.g., LiNixCoyMnzO2) and sulfide-based SEs (e.g., Li6PS5Cl) are particularly...