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Electrochemical impedance spectroscopy study of indium couples in LiCl-KCl eutectic at 450 °C

✍ Scribed by M. Mohamedi; J. Bouteillon; J.C. Poignet

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 721 KB
Volume: 41
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(95)00401-7

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✦ Synopsis

Voltammetric and chronopotentiometric studies have shown that the reduction of InCI, dissolved in molten LiCl-KC1 at 450°C follows a two step mechanism: It?+ + 2e-*In+ and In+le-*In".

The In'+/In+ and In+/InO couples were studied separately by electrochemical impedance spectroscopy (EIS). Analysis of the spectra showed that the electronic exchanges are respectively reversible and quasi-reversible. Moreover, it allowed the determination of the rate constant of In+/In' exchange, the diffusion coefficients of indium species in the LiCI-KCI eutectic, and also the diffusion layer thickness.