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Nd0.5Sr0.5Fe0.8Cu0.2O3−δ–xSm0.2Ce0.8O1.9 cobalt-free composite cathodes for intermediate temperature solid oxide fuel cells.
- Source :
-
International Journal of Hydrogen Energy . Oct2014, Vol. 39 Issue 31, p17852-17856. 5p. - Publication Year :
- 2014
-
Abstract
- Cobalt-free composites Nd 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3− δ (NSFCu)– x Sm 0.2 Ce 0.8 O 1.9 (SDC) ( x = 0–60 wt%) are investigated as IT-SOFC cathodes. The characteristic properties of cobalt-free composite cathodes comparing to cobalt-based composites are revealed. The DC conductivity and thermal expansion coefficient of the composite cathodes decrease with the content of SDC x , while the polarization resistance R p shows the least value with addition of 40 wt% of SDC. The power density of the single cell with NSFCu-40% SDC composite cathode improved significantly compared with that of undoped NSFCu cathode, with peak values of 488, 623, 849 and 1052 mW cm −2 at 600, 650, 700, and 750 °C, respectively. Moreover, the performance of the composite cathode is stable within testing period of 370 h at 700 °C, indicating that the NSFCu-40% SDC is an excellent cobalt-free composite cathode applied in IT-SOFC. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 39
- Issue :
- 31
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 98847277
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2014.08.131