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Electrochemistry of uranium in molten LiF–CaF2

Nourry, Christophe and Soucek, Pavel and Massot, Laurent and Malmbeck, Rikard and Chamelot, Pierre and Glatz, Jean-Paul Electrochemistry of uranium in molten LiF–CaF2. (2012) Journal of Nuclear Materials, vol. 430. pp. 58-63. ISSN 0022-3115

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Official URL: http://dx.doi.org/10.1016/j.jnucmat.2012.06.028

Abstract

This article is focused on the electrochemical behaviour of U ions in molten LiF–CaF2 (79–21 wt.%) eutectic. On aWelectrode, U(III) is reduced in one step to U metal and U(III) can be also oxidised to U(IV). Both systems were studied by cyclic and square wave voltammetry. Reversibility of both systems for both techniques was verified and number of exchanged electrons was determined, as well as diffusion coefficients for U(III) and U(IV). The results are in a good agreement with previous studies. On a Ni electrode,the depolarisation effect due to intermetallic compounds formation was observed. Electrorefining of U metal in a melt containing U and Gd ions was carried out using a reactive Ni electrode with promising results.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://dx.doi.org/10.1016/j.jnucmat.2012.06.028 The original PDF of the article can be found at Journal of Nuclear Materials website : http://dx.doi.org/10.1016/j.jnucmat.2012.06.028
HAL Id:hal-00831234
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Other partners > Institute for Transuranium Elements - ITU (GERMANY)
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Deposited By: Laurent MASSOT
Deposited On:02 Apr 2013 14:01

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