XPS for in situ observation of an Ag electrode on a solid electrolyte used as oxygen sensor |
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Authors: | Tsuyoshi Arakawa Akira Saito Jiro Shiokawa |
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Affiliation: | Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita-shi, Osaka-fu, Japan |
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Abstract: | The Ag electrode surface of a solid electrolyte in its working state has been studied by X-ray photoelectron spectroscopy. The nature of the AgO system on the electrode is dependent on the temperature. There are three types of AgO systems at 400°C. Type 1 with an O is binding energy of 532.6 eV only appeared at 325°C. However, when the temperature was raised to 400°C, types II and III (with BEs 531.1 and 529.2 eV) appeared. These O is signals are discussed in detail. |
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