Thermodynamic and mass transport properties of “LiIn”

The EMF of the vario-stoichiometric phase “LiIn” lies between 497 and 145 mV relative to pure lithium at 415°C over the composition range from 46.7 to 63.3 a/o Li, corresponding to a lithium activity varying from 2.29×10 −4 to 8.67×10 −2 at that temperature. On the Li-deficient side of LiIn, the che...

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Bibliographic Details
Published in:Materials research bulletin 1980-09, Vol.15 (9), p.1225-1234
Main Authors: Wen, C.John, Huggins, Robert A.
Format: Article
Language:English
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Summary:The EMF of the vario-stoichiometric phase “LiIn” lies between 497 and 145 mV relative to pure lithium at 415°C over the composition range from 46.7 to 63.3 a/o Li, corresponding to a lithium activity varying from 2.29×10 −4 to 8.67×10 −2 at that temperature. On the Li-deficient side of LiIn, the chemical diffusion coefficient increases rapidly with decreasing lithium concentration, approaching the value of 3.98×10 −5 cm 2/sec near the In-rich phase boundary of “LiIn”. In the region of positive deviations from the ideal stoichiometry, the chemical diffusion coefficient remains essentially constant up to a composition about 57.8 a/o Li. At higher lithium concentrations, the chemical diffusion coefficient first decreases and then increases as more lithium is added to the sample, and shows a minimum value of 4.73×10 −7 cm 2/sec at 62.2 a/o Li.
ISSN:0025-5408
1873-4227
DOI:10.1016/0025-5408(80)90024-0