Abstract
A model cell that features a set of parallel platinum contacts adjacent to one another is studied by an impedance spectroscopy method. The characteristic linear size (width) of a contact is nearly 100 μm. Even contacts are used as a working electrode and odd, as an “internal reference electrode.” The difference between electrode spectra, when measured relative to the latter and to a traditional reference electrode deployed at a distance, suggests that an expansion of the triple-phase boundary does exist and exceeds 0.3 mm and that electric properties of the electrolyte's surface layer differ from those of the bulk.
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Shkerin, S.N., Gormsen, S. & Mogensen, M. Studying the O2, Metal/O2– (Solid Electrolyte) Electrode System on Model Electrodes: The Electrolyte Surface Layer Properties. Russian Journal of Electrochemistry 40, 136–142 (2004). https://doi.org/10.1023/B:RUEL.0000016325.45469.ab
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DOI: https://doi.org/10.1023/B:RUEL.0000016325.45469.ab