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Lithium aluminate
Other names Lithium metaaluminate
Aluminate (AlO21-), lithium
Lithium aluminum oxide
CAS number 12003-67-7 Yes check.svgY
Molecular formula LiAlO2
Molar mass 65.921 g/mol
Appearance white crystalline powder
Density 2.615 g/cm3, solid
Melting point

>1625 °C

Solubility in water insoluble
MSDS External MSDS
 Yes check.svgY (what is this?)  (verify)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Lithium aluminate (LiAlO2), also called lithium aluminium oxide, is an inorganic chemical compound, an aluminate of lithium. In microelectronics, lithium aluminate is considered as a lattice matching substrate for gallium nitride. In nuclear technology, lithium aluminate is of interest as a solid tritium breeder material, for preparing tritium fuel for nuclear fusion.

Lithium aluminate also finds its use as an inert electrolyte support material in molten carbonate fuel cells, where the electrolyte may be a mixture of lithium carbonate, potassium carbonate, and sodium carbonate.[1]


  1. ^ Molten carbonate fuel cell electrolyte, United States Patent 4079171


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