This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1115/1.2393301 in citations.
A Comparative Study between Resistance Measurements in Model Experiments and Solid Oxide Fuel Cell Stack Performance Tests
A Comparative Study between Resistance Measurements in Model Experiments and Solid Oxide Fuel Cell Stack Performance Tests
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. P...
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Personal Name(s): | Haanappel, V. A. C. |
---|---|
Batfalsky, P. / Gross, S. M. / Haart, L.G.J. de / Malzbender, J. / Menzler, N. H. / Shemet, V. / Steinbrech, R. W. / Vinke, I. C. | |
Contributing Institute: |
Zentralinstitut für Technologie; ZAT Brennstoffzellen; IEF-3 Werkstoffsynthese und Herstellungsverfahren; IEF-1 Werkstoffstruktur und Eigenschaften; IEF-2 |
Published in: | Journal of fuel cell science and technology, 4 (2007) S. 11 - 18 |
Imprint: |
New York, NY
ASME
2007
|
Physical Description: |
11 - 18 |
DOI: |
10.1115/1.2393301 |
Document Type: |
Journal Article |
Research Program: |
Solid Oxide Fuel Cell Rationelle Energieumwandlung |
Series Title: |
Journal of Fuel Cell Science and Technology
4 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |