Electrochemical engineering of anodic oxygen evolution in molten oxides
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allanoreISE2012_revision3.pdf
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2.38 MB
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Adobe PDF
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e5b9d047487edb07eaa20d88c34f082d
Author(s)
Allanore, Antoine
Date Issued
May 2013
Journal
Electrochimica Acta
Publisher
Elsevier
Citation
Allanore, Antoine. “Electrochemical Engineering of Anodic Oxygen Evolution in Molten Oxides.” Electrochimica Acta 110 (November 2013): 587–592.
Version
Author's final manuscript
Abstract
Molten oxide electrolysis (MOE) is a metal extraction process that exhibits an exceptionally high productivity in comparison with other electrowinning techniques. Furthermore, MOE has the ability to generate oxygen as an environmentally benign byproduct, which is a key asset to improve metal extraction sustainability. From an electrochemical engineering standpoint, the high concentration of metal cations dissolved in the electrolyte justifies cathode current densities above 10,000 A m[superscript −2]. At the anode, the available data suggest a mechanism of oxidation of the free oxide anions which concentration in oxide melts is reported to be limited. In this context, the application of available mass-transfer correlations for the anodic oxygen evolution suggests a key role of convection induced by gas bubbles evolution.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.electacta.2013.04.095
