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Silicon electrodeposition in molten fluorides

Bieber, Anne-Laure and Massot, Laurent and Gibilaro, Mathieu and Cassayre, Laurent and Taxil, Pierre and Chamelot, Pierre Silicon electrodeposition in molten fluorides. (2011) Electrochimica Acta, 62. 282-289. ISSN 0013-4686

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Official URL: http://dx.doi.org/10.1016/j.electacta.2011.12.039


Silicon nucleation process was investigated in molten NaF-KF (40-60 mol%) on silver electrodes in the 820-950°C temperature range in order to optimize silicon coating operating conditions. Chronoamperometric measurements evidenced that silicon electrodeposition process involved an instantaneous nucleation with diffusion-controlled nuclei growth whatever temperature and Si(IV) ions concentration in the mixture. The overpotential and temperature influence on nucleation sites number was also studied. Silicon deposits were obtained using the same temperature range as nucleation study, for different current densities on substrates: Ni, Ag, Cgraphite and Cvitreous. A sensitive influence of the cathodic substrate on the deposit adherence and roughness was observed and discussed.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://dx.doi.org/10.1016/j.electacta.2011.12.039 The original PDF of the article can be found at Electrochimica Acta website : http://dx.doi.org/10.1016/j.electacta.2011.12.039
HAL Id:hal-03537607
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 - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:26 Mar 2013 15:02

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