SOFC Performance with Fe-Cr-Mn Alloy Interconnect
| Autor: | S. P. Simner, M. D. Anderson, G.-G. Xia, Z. Yang, L. R. Pederson, J. W. Stevenson |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Spinel Metallurgy Alloy Electrolyte engineering.material Current collector Condensed Matter Physics Cathode Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Coating law Materials Chemistry Electrochemistry engineering Thin film Yttria-stabilized zirconia |
| Zdroj: | Journal of The Electrochemical Society. 152:A740 |
| ISSN: | 0013-4651 |
| Popis: | The performance of anode-supported SOFC’s utilizing a Mn-containing ferritic stainless steel (Crofer22 APU) as the cathode current collector were assessed. Three cathodes were considered: (La0.8Sr0.2)0.99MnO3, (La0.8Sr0.2)0.99FeO3and (La0.6Sr0.4)0.98Fe0.8C00.2O3 (all samples incorporated a Sm-doped CeO2 interlayer between the cathode and the thin film YSZ electrolyte). Inclusion of the Fe-Cr alloy caused rapid degradation in all samples, which was attributed to solid-state reactivity at the cathode-Crofer interface, in addition to Cr volatilization from the alloy and subsequent condensation/reaction within the cathode and at the cathode-electrolyte interface. In situ- HTXRD was used to access the cathode-Crofer reaction products. Pre-oxidation of the Crofer at 800 degrees C for 500 hours to form a protective (Mn,Cr)3O4 spinel coating resulted in a marginal reduction of the cell degradation rate. |
| Databáze: | OpenAIRE |
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