LiBF4 (Lithium tetrafluoroborate) has been extensively tested for use in commercial secondary batteries, an application that exploits its high solubility in nonpolar solvents. Although BF4− has high ionic mobility, solutions of its Li+ salt are less conductive than other less associated salts. As an electrolyte in Lithium-ion batteries, LiBF4 offers some advantages relative to the more common LiPF6. It exhibits greater thermal stability and moisture tolerance. For example LiBF4 can tolerate a moisture content up to 620 ppm at room temperature whereas LiPF6 readily hydrolyzes into toxic POF3 and HF gases, often destroying the battery’s electrode materials. Disadvantages of the electrolyte include a relatively low conductivity and difficulties forming a stable solid electrolyte interface with graphite electrodes.

Synonyms Lithium tetrafluoroborate; Borate(1-), tetrafluoro-, lithium (1:1); Lithium borofluoride; LITHIUM FLUOROBORATE; Lithium tetrafluoroborate; Lithiumtetrafluoroborat [German]; Tétrafluoroborate de lithium [French] [ACD/IUPAC; dilithium fluoro(dioxido)borane; lithium and tetrafluoroborate; Lithium tetrafluoroborate anhydrous; 四氟硼酸锂 [Chinese]

CAS Number 14283-07-9 | Molecular Formula LiBF4 | Molecular Weight 93.746 | EINECS 238-178-9 | MDL Number MFCD00011087

SMILES [Li+].[B-](F)(F)(F)F

StdInChI InChI=1S/BF4.Li/c2-1(3,4)5;/q-1;+1


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