The emergence of lithium metal batteries (LMBs) featuring lithium metal anodes as a central component underscores their

immense potential as next-generation energy systems, attributed to their unparalleled energy density compared to conventional

lithium-ion batteries. Despite substantial eff orts toward the commercialization of LMBs, numerous challenges persist.

Among these, the inherent limitations of single-phase electrolytes, whether liquid, solid, or gel have prompted growing

interest in a new class of two-phase electrolytes. This review explores recent advancements in two-phase electrolyte confi

gurations for LMBs, emphasizing the synergistic capabilities of solid–solid, solid–liquid, and solid-gel architectures. By

combining the unique benefi ts of each phase within a hybrid matrix, two-phase electrolytes exhibit enhanced ionic conductivity,

mechanical stability, and interfacial compatibility. Through a systematic examination of failure mechanisms, material

compatibility, and modifi cation techniques, this review provides a comprehensive framework to drive future innovations in

two-phase electrolytes, ultimately paving the way for safer, high-performance LMBs suitable for commercial applications.