Gamma lithium aluminate product and process of making

摘要

gamma-type lithium aluminate, a particle of which has a BET specific surface area in a range of from 1 to 15 m2/g and a synthesized degree (P) of not less than 80% is disclosed. The synthesized degree (P) is defined by the equation, (I2/I1)x100, wherein I1 and I2 represent diffraction intensity in the X-ray diffraction spectral analysis of gamma-type lithium aluminate and I1 represents the height of a (101) peak, I2 represents the height of a (200) peak. The gamma-type lithium aluminate of the present invention exhibits excellent heat stability and chemical stability in a molten carbonate when used for an electrolyte-retainer plate of MCFC.