Electrochemical behaviour of dissolved iron chloride in KCl+LiCl+NaCl melt at 550 ºC
Khalaghi, Babak; Kvalheim, Eirin; Tokushige, Manabu; Teng, Lidong; Seetharaman, S.; Haarberg, Geir Martin
Journal article
Submitted version
Date
2014Metadata
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- Institutt for materialteknologi [2495]
- Publikasjoner fra CRIStin - NTNU [37177]
Abstract
An electrochemical study of iron was carried out in KCl+LiCl+NaCl melt at 550ºC using a glassy carbon working electrode. Cyclic voltammetry showed that the Fe(II)/Fe(0) electron exchange is a soluble/insoluble reversible process. The diffusion coefficient of Fe(II) was calculated using cyclic voltammetry; 1.4×10-5 cm2 s-1. For the Fe(II)/Fe(III) red/ox reaction, analysis of the voltammograms suggests that the process is not reversible and is coupled with a chemical reaction. The stability of FeCl3 and the effect of equilibrium between FeCl3 and FeCl2 are also briefly discussed.