Influence of mass transfer and electrolyte composition on anodic oxygen evolution in molten oxides
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Influence of mass transfer.pdf
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1.66 MB
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50a38a7c069442ae0070be1561610705
Author(s)
Caldwell, Andrew Harvey
Lai, E.
Gmitter, Andrew John
Allanore, Antoine
Date Issued
September 2016
Journal
Electrochimica Acta
Publisher
Elsevier
Citation
Caldwell, A. H., et al. “Influence of Mass Transfer and Electrolyte Composition on Anodic Oxygen Evolution in Molten Oxides.” Electrochimica Acta, vol. 219, Nov. 2016, pp. 178–86.
Version
Author's final manuscript
Abstract
The electrochemistry of anodic oxygen evolution on iridium in silicate-containing molten oxides at 1570 °C was experimentally investigated using both direct and alternating current methods. Static and rotating electrode results show the presence of anodic reactions of iridium in addition to oxygen evolution. In the context of electrochemical engineering of molten oxide electrolysis, the results confirm prior theoretical calculations (Allanore, 2013) that suggested an essential role of convection and electrolyte composition on the ability to sustain oxygen evolution at high current densities. In addition, the reported results show that electrochemical measurements in molten oxides coupled with mass-transfer models are complementary characterization tools for oxygen chemistry. Keywords; molten oxides, oxygen evolution, rotating electrode, ac voltammetry, iridium, silicates
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.electacta.2016.09.132
