On the kinetics of the cathodic deposition of aluminium on glassy carbon and tungsten electrodes from AlCl3+NaCl+KCl melts

The kinetics of Al deposition from AlCl3 + NaCl + KCl melts were studied using several electrochemical relaxation techniques at 975K. The deposition process was found to be controlled mainly by diffusion in the concentration range under study (cAlCl3 = 5 x 10 exp --5 --5 x 10 exp --4 mol cm exp --3...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry and interfacial electrochemistry 1986-10, Vol.210 (1), p.127-136
Main Authors: YONG JIAN ZHANG, BJØRGUM, A, ERIKSON, U, TUNOLD, R, ØDEGARD, R
Format: Article
Language:English
Subjects:
Chemistry
Electrochemistry
Exact sciences and technology
General and physical chemistry
High temperature electrochemistry (including molten salts)
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Summary:The kinetics of Al deposition from AlCl3 + NaCl + KCl melts were studied using several electrochemical relaxation techniques at 975K. The deposition process was found to be controlled mainly by diffusion in the concentration range under study (cAlCl3 = 5 x 10 exp --5 --5 x 10 exp --4 mol cm exp --3 ). The charge transfer reaction seems to be rather fast. No sign of a slow dissociation of a complex preceding the charge transfer was observed. Diffusion coefficients and rate constants have been obtained. 16 ref.--AA(US).
ISSN:0022-0728
DOI:10.1016/0022-0728(86)90318-9