A Comparative Study Between Resistance Measurements in Model Experiments and Solid Oxide Fuel Cell Stack Performance Tests
| Autor: | L.G.J. de Haart, Jürgen Malzbender, S. M. Gross, V. A. C. Haanappel, P. Batfalsky, Rolf W. Steinbrech, Izaak C. Vinke, Vladimir Shemet, Norbert H. Menzler |
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| Rok vydání: | 2006 |
| Předmět: |
Interconnection
Materials science Hydrogen Renewable Energy Sustainability and the Environment Mechanical Engineering Energy Engineering and Power Technology chemistry.chemical_element Electronic Optical and Magnetic Materials Stress (mechanics) Stack (abstract data type) chemistry Electrical resistance and conductance Mechanics of Materials visual_art Forensic engineering visual_art.visual_art_medium Constant current Solid oxide fuel cell Ceramic Composite material |
| Zdroj: | Journal of Fuel Cell Science and Technology. 4:11-18 |
| ISSN: | 1551-6989 1550-624X |
| DOI: | 10.1115/1.2393301 |
| Popis: | Several combinations of glass-ceramic and steel compositions with excellent chemical and physical properties have been tested in the past in solid oxide fuel cell (SOFC) stacks, but there have also been some combinations exhibiting pronounced chemical interactions causing severe stack degradation. Parallel to the examination of these degradation and short-circuiting phenomena in stack tests, recently less complex model experiments have been developed to study the interaction of glass-ceramic sealants and interconnect steels. The sealants and steels were tested in the model experiments at operation temperature using a dual air/hydrogen atmosphere similar to stack conditions. The present work compares electrochemical performance under constant current load of SOFC stack tests with the resistance changes in model experiments. In addition, microstructural results of post-operation inspection of various sealant–steel combinations are presented. The model experiments have shown that under the chosen experimental conditions, distinct changes of the specific resistance of the specimens correlate well with the changes of the electrochemical performance of SOFC stacks, indicating that this method can be considered as an excellent comparative method to provide useful information on the physical and chemical interactions between glass-ceramic sealants and ferritic steels. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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