Li2I

Li₂I is an ionic ceramic compound composed of lithium and iodine, belonging to the family of lithium halides. This material is primarily of research interest for solid-state battery applications, where it serves as a potential solid electrolyte or electrolyte component, leveraging lithium's high ionic mobility and iodine's electrochemical stability. Li₂I and related lithium halide ceramics are being investigated as alternatives to conventional liquid electrolytes in next-generation energy storage, offering potential advantages in thermal stability, safety, and energy density—though materials in this class remain largely in development phases outside specialized laboratory and industrial battery research settings.