Lithium tetrachloroaluminate

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

Lithium tetrachloroaluminate
Names
IUPAC name
lithium tetrachloroaluminate
Other names
lithium aluminium chloride; LAC
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.396
EC Number
  • 237-850-9
PubChem CID
CompTox Dashboard (EPA)
Properties
Chemical formula
 LiAlCl4
Molar mass 175.72 g·mol−1
Appearance white crystals
Melting point 146
Hazards
GHS pictograms
GHS Signal word Danger
GHS hazard statements
 H302, H312, H314, H318, H332
GHS precautionary statements
 P260, P261, P264, P270, P271, P280, P301+312, P301+330+331, P302+352, P303+361+353, P304+312, P304+340, P305+351+338, P310, P312, P321, P322, P330, P363, P405, P501
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

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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