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Electrochemical behaviour of magnesium ions in the equimolar CaCl2NaCl mixture at 550 °C

✍ Scribed by Y. Castrillejo; A.M. Martínez; R. Pardo; G.M. Haarberg

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
599 KB
Volume
42
Category
Article
ISSN
0013-4686

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✦ Synopsis

The electrochemical behaviour of magnesium ions was studied in molten CaClrNaCl at 550°C by cyclic voltammetry, chronoamperometry and chronopotentiometry.

We observed that the electrode process of the reduction of Mg(II) on a tungsten electrode is quasireversible.

The values of the transfer coefficient, tl, and the charge-transfer rate constant, k", were calculated by means of the logarithmic analysis of the convoluted curves. Those values were compared with the ones obtained from the steady-state current-potential curves. On the other hand, the diffusion coefficient of the Mg(II) ions, has also been determined by different electrochemical techniques, giving values ranging from 7.2 to 9.9 x 10e6 cm2 s-'.

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