Lithium fluoride can be widely used as cosolvent in glass-lined, copper, aluminum welding process and salt melting chemical process; it is also recommended as a heat carrier Chemicalbook for storing solar radiation heat energy in aerospace technology; it can also be used in aluminum electrolysis and metallurgy in industry. High-purity lithium fluoride is used to make fluoride glass, and it can also be used to make prisms for spectrometers and X-ray monochromators. Lithium-ion battery raw materials.