In-Operando XRD Study of the Effects of Water Vapor on Phase Formation in LSM/YSZ SOFC Cathodes

In-Operando XRD Study of the Effects of Water Vapor on Phase Formation in LSM/YSZ SOFC Cathodes

In-operando XRD was conducted on anode supported SOFC button cells with LSM-YSZ cathodes operated at varying cathode air compositions under constant current conditions for over 1000 h. 1-hour XRD scans were continuously collected throughout the entire operation duration. By taking the sum of measure...

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Veröffentlicht in:Journal of the Electrochemical Society 2022-02, Vol.169 (2), p.24512
Hauptverfasser: Yang, X., Hardy, J. S., Coyle, C. A., Bonnett, J. F., Mahserejian, S. M., Stevenson, J. W.
Format: Artikel
Sprache:eng
Schlagworte:
ENERGY STORAGE
impedance spectroscopy
in-operando XRD
LSM-YSZ cathode
performance degradation
Sr segregation
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Zusammenfassung:In-operando XRD was conducted on anode supported SOFC button cells with LSM-YSZ cathodes operated at varying cathode air compositions under constant current conditions for over 1000 h. 1-hour XRD scans were continuously collected throughout the entire operation duration. By taking the sum of measured intensities from all of the collected patterns, the resulting cumulative XRD count times allowed the identification of minor phases present at concentrations as low as
ISSN:0013-4651
1945-7111
DOI:10.1149/1945-7111/ac4f6e