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	14024-11-4
3D model (JSmol)	Interactive image
ChemSpider	21160220
ECHA InfoCard	100.034.396
EC Number	237-850-9
PubChem CID	16700422
CompTox Dashboard (EPA)	DTXSID50893949
InChI InChI=1S/Al.4ClH.Li/h;4*1H;/q+3;;;;;+1/p-4 Key: AQLRWYUVWAYZFO-UHFFFAOYSA-J InChI=1/Al.4ClH.Li/h;4*1H;/q+3;;;;;+1/p-4/rAlCl4.Li/c2-1(3,4)5;/q-1;+1 Key: AQLRWYUVWAYZFO-VCMAQHAHAL
SMILES [Li+].Cl[Al-](Cl)(Cl)Cl
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