Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2017 > Electrochemical Behavior of Nanostructur...
acta de conferencia
"Electrochemical Behavior of Nanostructured La0.8Sr0.2MnO3 as Cathodes for Solid Oxide Fuel Cells"
Joaquín Sacanell, Joaquín Hernández Sánchez, Adrián Ezequiel Rubio Lopez, Hernán Martinelli, Jimena Siepe, Ana Gabriela Leyva, Valeria Paola Ferrari, Miguel Pruneda, Dilson Juan and Diego German Lamas
Proc. of the "15th International Symposium on Solid Oxide Fuel Cells" (SOFC-XV), Hollywood, Florida, USA, July 23-28, 2017. Eds. S.C. Singhal and T. Kawada
ECS Trans. 78(1) (2017) 667-675
La0.8Sr0.2MnO3 (LSM) is one of the most commonly used cathodes in Solid Oxide Fuel Cells (SOFC). In spite of the fact that nanostructured cathodes are expected to display improved performance, the high operating temperature (1000°C) of LSM-based SOFCs hinders their stability. In the present work, we have developed nanostructured cathodes prepared from LSM nanotubes of enhanced performance, allowing its use at lower temperatures (800°C). We observed that our cathodes have qualitative improvements compared with microstructured materials: firstly, the diffusion in the gas phase is optimized to a negligible level and secondly, evidence of ionic conduction is found, which is extremely rare in LSM cathodes. We propose that this important change in the electrochemical properties is due to the nanostructuration of the cathode and deserves further attention, including the exploration of other materials.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121