Performance and stability of La0.8Sr0.2MnO3 cathode promoted with palladium based catalysts in solid oxide fuel cells
MetadataShow full item record
The effect of catalyst loading, operation temperature and co-infiltration of the palladium-based catalystson the performance and stability of La0.8Sr0.2MnO3 (LSM) cathode of solid oxide fuel cells (SOFCs) isinvestigated. The result shows that adding a small amount of Pd catalyst (0.08mgcm-2) has a remarkable effect on the reduction of overpotential of LSM cathodes and high palladium loading is detrimental to the electrochemical activity of LSM cathodes. The performance and stability of the Pd-impregnated LSM cathodes can be enhanced significantly by co-infiltration of palladium with either 20 mol% of silver or 5 mol% of cobalt. Increased stability of the co-infiltrated catalyst materials is probably related to the enhanced resistance of the co-impregnated Pd0.95Co0.05 and Pd0.8Ag0.2 nanoparticles against agglomeration and sintering at SOFC operation temperatures. The results indicate the co-impregnation is effective not only to enhance the electrochemical activity but also to improve the stability of LSM cathodes for the O2 reduction reaction of SOFCs.
Showing items related by title, author, creator and subject.
Nanostructured (Ba,Sr)(Co,Fe)O3-δ impregnated (La,Sr)mnO3 cathodes for intermediate-temperature solid oxide fuel cellsAi, Na; Jiang, San Ping; Lü, Z.; Chen, Kongfa; Su, W. (2010)A nanostructured cathode is fabricated by incorporating a mixed ionic and electronic conducting (MIEC) perovskite, Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF), via ion impregnation into the most common, highly electronic conducting, ...
Liu, Y.; Wang, F.; Chi, B.; Pu, J.; Jian, L.; Jiang, San Ping (2013)The performance degradation of composite cathodes of La0.6Sr0.4Co0.2Fe0.8O3−δ and Gd-doped ceria (LSCF–GDC), prepared by impregnating the porous GDC scaffold with a nitrate solution containing La, Sr, Co and Fe in desired ...
In situ catalyzed Boudouard reaction of coal char for solid oxide-based carbon fuel cells with improved performanceJiao, Y.; Tian, W.; Chen, H.; Shi, H.; Yang, B.; Li, C.; Shao, Zongping; Zhu, Z.; Li, S. (2015)© 2014 Elsevier Ltd. The use of industrial coal char as a fuel source for an anode-supported solid oxide-based carbon fuel cell (SO-CFC) with a yttrium-stabilized zirconia electrolyte and La0.8Sr0.2MnO3 cathode was ...