6LiF nanopowder enriched to 96% has been used as the neutron reactive backfill material for microstructured semiconductor neutron detectors (MSND). (n,alpha) nuclear reaction) in thermoluminescent dosimeters. It is also used as a means to record ionizing radiation exposure from gamma rays, beta particles, and neutrons (indirectly, using the 6
(See also magnesium fluoride.) Lithium fluoride is used also as a diffracting crystal in X-ray spectrometry. LiF is therefore used in specialized optics for the vacuum ultraviolet spectrum. The primary coolant for the Molten-Salt Reactor Experiment was FLiBe 2LiF♻eF 2 (66 mol% of LiF, 33 mol% of BeF 2).īecause of the large band gap for LiF, its crystals are transparent to short wavelength ultraviolet radiation, more so than any other material. A useful molten salt, FLiNaK, consists of a mixture of LiF, together with sodium fluoride and potassium fluoride. This electrolysis proceeds more efficiently when the electrolyte contains a few percent of LiF, possibly because it facilitates formation of an Li-C-F interface on the carbon electrodes. Lithium fluoride is reacted with hydrogen fluoride (HF) and phosphorus pentachloride to make lithium hexafluorophosphate Li, an ingredient in lithium ion battery electrolyte.įluorine is produced by the electrolysis of molten potassium bifluoride. Applications Precursor to lithium hexafluorophosphate for batteries LiF is prepared from lithium hydroxide or lithium carbonate with hydrogen fluoride. Partly because Li and F are both light elements, and partly because F 2 is highly reactive, formation of LiF from the elements releases one of the highest energies per mass of reactants, second only to that of BeO. It is mainly used as a component of molten salts. Its structure is analogous to that of sodium chloride, but it is much less soluble in water. Although odorless, lithium fluoride has a bitter-saline taste.
It is a colorless solid that transitions to white with decreasing crystal size. Lithium fluoride is an inorganic compound with the chemical formula LiF.
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