Novel structured electrolytes for solid oxide fuel cells

Celik, Selahattin
Timurkutluk, Cigdem
Mat, Mahmut D.
Kaplan, Yuksel
Novel grate type electrolytes are designed and fabricated to improve the cell performance and to lower the operation temperature of intermediate temperature electrolyte supported solid oxide fuel cells based on scandium and ceria stabilized zirconia by partly reducing the electrolyte thickness. The characteristics of three different small size cells (11.62 cm(2) active area) having various electrolyte designs are investigated. A standard electrolyte supported cell is also produced as a base case for comparison. Performance measurements showed that all cells having grate type electrolyte produce higher power than that of the base cell due to partly reduced electrolyte thickness. Impedance analysis confirmed that the improvement in the performance is due to the decrease in the electrolyte resistance together with the increased number of active sites. Among the three different designs, Cell C showed the highest power output 14.7 W at 800 degrees C corresponding to 1.26 W cm(-2) power density which is more than twice the base case performance.


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In order to enhance the electrochemical performance and reduce the operation temperature of a conventional electrolyte supported solid oxide fuel cell (SOFC), a three layered electrolyte with various geometry is designed and fabricated. Novel three layered electrolytes comprise a dense and thin scandia alumina stabilized zirconia (ScAlSZ) electrolyte layer sandwiched between two hallow ScAlSZ electrolyte layers each having the same thickness as the support but machined into a filter like architecture in the...
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Citation Formats
B. TİMURKUTLUK, S. Celik, C. Timurkutluk, M. D. Mat, and Y. Kaplan, “Novel structured electrolytes for solid oxide fuel cells,” JOURNAL OF POWER SOURCES, pp. 47–54, 2012, Accessed: 00, 2020. [Online]. Available: