Used as a solid electrolyte material in lithium-ion batteries due to its high thermal stability and ionic conductivity. Plays a role in ceramic and glass manufacturing for improving heat resistance and mechanical strength. Employed in the production of phosphors for lighting applications, especially in LEDs. Also utilized in catalysts for certain organic reactions and as a precursor in the synthesis of other lithium-containing compounds. Shows potential in hydrogen storage systems when doped with specific metals. Commonly found in high-temperature applications because of its excellent thermal and chemical stability.