molten salt, tungsten, calcium chloride, oxide, cyclic voltammetry, electrochemistry
The electrochemical interaction of oxide ions with tungsten electrodes in molten calcium chloride (CaCl2) was analyzed by combining electroanalytical techniques with X-ray photoelectron spectroscopy. During a cyclic voltammetry (CV) scan, the oxide ions appear to interact with the tungsten working electrode via a multi-step oxidation and reduction process. The overall redox peaks behave reversibly up to 750 mV/s. This electrochemical process enables the oxide ion concentration to be correlated to CV oxidation peaks. The resulting correlation agrees well (8.8% difference) with back titration measurements and can be used to monitor oxide content in the salt in real-time during CaCl2 based pryoprocesses.
Original Publication Citation
Zhang, C., Rappleye, D., Nelson, A., Simpson, S., & Simpson, M. (2021). Electroanalytical Measurements of Oxide Ions in Molten CaCl2 on W electrode. Journal of The Electrochemical Society, 168(9), 097502. https://doi.org/10.1149/1945-7111/ac208e
BYU ScholarsArchive Citation
Rappleye, Devin; Zhang, Chao; Nelson, Art; Simpson, Scott; and Simpson, Michael, "Electroanalytical Measurements of Oxide Ions in Molten CaCl2 on W electrode" (2021). Faculty Publications. 5898.
The Electrochemical Society
Ira A. Fulton College of Engineering
© 2021 The Electrochemical Society. All rights reserved. This is the author's submitted version of this article. The definitive version can be found at https://doi.org/10.1149/1945-7111/ac208e
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