Used as a precursor in the synthesis of lithium iron phosphate (LiFePO₄), a key cathode material in lithium-ion batteries, especially for electric vehicles and energy storage systems due to its thermal stability and long cycle life. Also employed in ceramic and glass manufacturing to improve thermal shock resistance and durability. Serves as a fluxing agent in some high-temperature processes and finds use in certain dental cements for its biocompatibility and setting properties. Additionally, it is utilized in research and development of solid-state electrolytes for next-generation batteries.