Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7718735 | International Journal of Hydrogen Energy | 2014 | 10 Pages |
Abstract
Highly sinterable gadolinia doped ceria (GDC) powders are prepared by carbonate coprecipitation and applied to the GDC interlayer in Ni-YSZ (yttria stabilized zirconia)-supported tubular solid oxide fuel cell in order to prevent the reaction between YSZ electrolyte and LSCF (La0.6Sr0.4Co0.2Fe0.8O3âδ) cathode materials. The formation of highly resistive phase at the YSZ/LSCF interface was effectively blocked by the low-temperature densification of GDC interlayer using carbonate-derived active GDC powders and the suppression of Sr diffusion toward YSZ electrolyte via GDC interlayer by tuning the heat-treatment temperature for cathode fabrication. The power density of the cell with the configuration of Ni-YSZ/YSZ/GDC/LSCF-GDC/LSCF was as high as 906 mW cmâ2, which was 2.0 times higher than that (455 mW cmâ2) of the cell with the configuration of Ni-YSZ/YSZ/LSM(La0.8Sr0.2MnO3âδ)-YSZ/LSM at 750 °C.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Seung-Young Park, Jee Hyun Ahn, Chang-Woo Jeong, Chan Woong Na, Rak-Hyun Song, Jong-Heun Lee,