| 초록 |
YDB and GDC were investigated as a bilayered electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs). LSM-YDB was used as a cathode material to improve the compatibility with the YDB electrolyte. The polarization resistance and ohmic resistance of the GDC-YDB bilayer cell were 0.189 Ωcm2 and 0.227 Ωcm2 at 650 ℃, respectively. Compared to the single-layer GDC cell, the bilayer cell showed higher performance. The power density and OCV of the cell were 0.527 Wcm-2 and 0.89 V at 650 ℃, respectively. The results suggest that the YDB interlayer and LSM-YDB cathode contributed to the improvement of the cell performance and the suppression of the electronic conduction of GDC. |
