Abstract
La0.84Sr0.16MnO3−δ - Ce0.8Gd0.2O2-δ (LSM-GDC) composite cathodes were fabricated by impregnating the LSM matrix with both LSM′ (La0.84Sr0.16MnO3−δ) and GDC (or only GDC), and the ion-impregnated LSM-GDC composite cathodes showed excellent performance. At 750 °C, the value of the cathode polarization resistance (R p ) was only 0.058 Ω cm2 for an ion-impregnated LSM-GDC composite cathode which was impregnated with both LSM′ and GDC. For the performance of the single cell with the same cathode, the maximum power density was 1.1 W cm−2 at 750 °C. The long-term test of the cell was carried out at 700 °C with a constant load of 0.3 A cm−2 and the output voltage was stable on the whole. The results demonstrated that LSM-GDC fabricated by impregnating the LSM matrix with both LSM′ and GDC was a promising composite cathode material for the intermediate-temperature solid oxide fuel cells.
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Acknowledgements
We gratefully acknowledge financial support of the National Science Foundation of China under contract No. 51106173. This work is also supported by the Science and Technology Commission of Zhejiang Province under contract No. 2011C16037.
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Li, J., Shi, J., Nie, H. et al. Improvement of a GDC-based composite cathode for intermediate-temperature solid oxide fuel cells. J Electroceram 32, 339–343 (2014). https://doi.org/10.1007/s10832-014-9909-1
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DOI: https://doi.org/10.1007/s10832-014-9909-1