| Long-term Testing and Analysis of a ScSZ/LaSrCuFe Cell |
| Jurgen Wackerl, Dong-Hyun Peck1, Torsten Markus |
Forshungszentrum Julich GmbH
1Korea Institute of Energy Research |
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| ABSTRACT |
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An electrolyte supported SOFC cell was tested at $800^{circ}C$ in air for 3600 h with an applied current density of $200;mA/cm^2$ to examine possible cathode degradation issues. A scandium- stabilized zirconia (ScSZ) with additional manganese doping (ScSZ: Mn) was used as electrolyte. A strontium and copper-doped lanthanum ferrite (LaSrCuFe) and platinum were used as cathode and quasi-anode material, respectively. The DC resistance was logged over the complete testing period. Additionally, impedance spectroscopy was used from time to time to track changes of the cell in-situ. Post-test analysis of the cell using methods like scanning electron microscopy imaging and other electrochemical testing methods allow the identification of different degradation sources. The results indicate a promising combination of electrolyte and cathode material in terms of chemical compatibility and electrical performance. |
| Key words:
Scandia doped zirconia, Perovskite, Degradation, Cell test, Impedance spectroscopy |
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