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http://dx.doi.org/10.4191/KCERS.2007.44.1.703

Comparison of the Power Generating Characteristics of KIST- and FZ-Julich SOFCs  

Jung, Hwa-Young (Center for Energy Materials Research, KIST)
Lee, Sang-Cheol (Center for Energy Materials Research, KIST)
Tietz, Frank (Institute for Materials and Processes in Energy Systems, Forschungszentrum Julich)
Kim, Hae-Ryoung (Center for Energy Materials Research, KIST)
Lee, Hae-Weon (Center for Energy Materials Research, KIST)
Lee, Jong-Ho (Center for Energy Materials Research, KIST)
Publication Information
Journal of the Korean Ceramic Society / v.44, no.12, 2007 , pp. 703-709 More about this Journal
Abstract
We evaluate and compare the power generating characteristics of the anode supported SOFCs which have been fabricated from KIST and FZ-Julich in Germany. The performance and electrochemical property of each unit cell was characterized at the temperature range of $650-850^{\circ}C$ under same operating conditions and its microstructural property was thoroughly investigated via SEM after the performance test. According to the investigation, KIST- and FZJ SOFC showed different power generating characteristics in their temperature dependances due to their different design of electrode microstructure, especially the cathode microstructure. FZJ SOFC showed better performance at high temperature while showed lower performance at lower temperature. From the investigation about the correlation between microstructure and electrochemical property, we found that the superior performance of FZJ SOFC at high temperature was mainly due to its lower cathodic polarization resistance whereas better performance of KIST SOFC at lower temperature was mostly attributed to the lower ohmic resistance.
Keywords
Anode supported SOFC; Unit cell; Performance;
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