One of the most challenging problems in SOFC is the thermal compatibility of materials. Mechanical failure, or cathode delamination induced performance degradation, is related to local heat generations. An accurate measurement of spatial temperature distribution with correlated electric current provides good information for fuel cell performance and thermal management. Because insufficient ability of measuring electric current introduced heat generation, infrared thermography, instead of thermocouple, was used to measure the instantaneous cathode surface temperature response to the electric current in an operating electrolyte supported planar solid oxide fuel cell (LSCF-6ScSZ-NiO). The numerical model was built to study the coupled current and temperature relation by incorporating the temperature dependent material properties, i.e., Ohmic resistance and activation resistance, as a global function in the model. The thermal and electric fields were solved simultaneously. The measured and the predicted results agreed to each other well. The cathode polarization overpotential tended to increase with the current at the low current densities, but the simulated polarization-current curve exhibited a decreased slope under higher current densities that is ascribed to the local temperature increases due to the current.
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August 2008
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
Infrared Thermography and Thermoelectrical Study of a Solid Oxide Fuel Cell
Gang Ju,
Gang Ju
Connecticut Global Fuel Cell Center,
University of Connecticut
, Storrs, CT 06269
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Kenneth Reifsnider,
Kenneth Reifsnider
Connecticut Global Fuel Cell Center,
University of Connecticut
, Storrs, CT 06269
Search for other works by this author on:
Xinyu Huang
Xinyu Huang
Connecticut Global Fuel Cell Center,
University of Connecticut
, Storrs, CT 06269
Search for other works by this author on:
Gang Ju
Connecticut Global Fuel Cell Center,
University of Connecticut
, Storrs, CT 06269
Kenneth Reifsnider
Connecticut Global Fuel Cell Center,
University of Connecticut
, Storrs, CT 06269
Xinyu Huang
Connecticut Global Fuel Cell Center,
University of Connecticut
, Storrs, CT 06269J. Fuel Cell Sci. Technol. Aug 2008, 5(3): 031006 (6 pages)
Published Online: May 23, 2008
Article history
Received:
March 15, 2006
Revised:
September 28, 2007
Published:
May 23, 2008
Citation
Ju, G., Reifsnider, K., and Huang, X. (May 23, 2008). "Infrared Thermography and Thermoelectrical Study of a Solid Oxide Fuel Cell." ASME. J. Fuel Cell Sci. Technol. August 2008; 5(3): 031006. https://doi.org/10.1115/1.2894470
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Mathematical Background
Vibrations of Linear Piezostructures