Review on Interface Issues between a Garnet Li₇La₃Zr₂O₁₂ Solid Electrolyte and Li Anode: Advances and Perspectives

Abstract

In the pursuit of advancements within the realm of solid-state lithium metal batteries, considerable attention has been directed toward the garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) material owing to its exceptional lithium stability, elevated ionic conductivity at room temperature, compatibility with high operating voltages, and environmentally friendly low-cost production methodologies. Despite these merits, the widespread utilization of LLZO in conjunction with a lithium anode is significantly impeded by the emergence of high interfacial resistance and interface lithium dendrite growth issues. When these challenges are addressed, this paper comprehensively examines the mechanistic underpinnings of interface issues arising from the interaction between LLZO and a lithium anode. Furthermore, it surveys the latest advancements and improvement methodologies employed to mitigate these concerns, aiming to propel the advancement of solid-state battery technology.