An electrochemical impedance study on cermet anodes in alumina-saturated molten cryolite

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2085917· OSTI ID:7200726

Windisch, Jr, C F ^[1]

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1. Pacific Northwest Lab., Richland, WA (United States)

This paper reports on electrochemical impedance spectra of NiO-NiFe{sub 2}O{sub 4}-Cu cermet anodes in alumina-saturated molten cryolite at anodic potentials above the decomposition potential of alumina which exhibited a loop with a characteristic frequency of about 1 Hz. A similar feature was observed using platinum anodes under the same experimental conditions. Analysis of these data suggests the loop was due to gas bubbling. Features associated with charge-transfer processes were not sufficiently resolved to determine the corrosion properties of the cermet anode.

• DOE Contract Number: AC06-76RL01830
• OSTI ID: 7200726
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 138:7; ISSN JESOA; ISSN 0013-4651
• Country of Publication: United States
• Language: English

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