Lithium tetrachloroaluminate

Lithium tetrachloroaluminate
Names
IUPAC name
lithium tetrachloroaluminate
Other names
lithium aluminium chloride; LAC
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.396
Properties
LiAlCl4
Molar mass 175.72 g·mol−1
Appearance white crystals
Melting point 146
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Lithium tetrachloroaluminate (LAC, lithium aluminium chloride) is an inorganic compound, a tetrachloroaluminate of lithium, with the formula LiAlCl4.[1]

Solution of lithium tetrachloroaluminate in thionyl chloride is the liquid cathode and electrolyte of some lithium batteries, e.g. the lithium-thionyl chloride cell. Another cathode-electrolyte formulation is lithium tetrachloroaluminate+thionyl chloride+sulfur dioxide+bromine.


Other salts used in lithium battery electrolytes are lithium bromide, lithium perchlorate, lithium tetrafluoroborate, and lithium hexafluorophosphate; less common ones are lithium chloride, lithium iodide, lithium chlorate, lithium nitrate, lithium hexafluoroarsenate, lithium hexafluorosilicate, lithium bis(trifluoromethanesulfonyl)imide, and lithium trifluoromethanesulfonate.[2]

References

  1. ↑ Perenthaler, E.; Schulz, Heinz; Rabenau, A. "Crystal structures of lithium tetrachloroaluminate and sodium tetrachloroaluminate as a function of temperature" Zeitschrift für Anorganische und Allgemeine Chemie (1982), 491, 259-65. doi:10.1002/zaac.19824910133
  2. ↑ USA US20080280197 A1, Masaki Machida, "Spirally wound non-aqueous electrolyte secondary battery", published 13 Nov 2008, assigned to Sony Corporation


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