Performance of Ag/La0.6Sr0.4Co1-xFexO3 (x = 0 - 0.8) Nanotube Composite Cathodes for IT-SOFCs

MARTÍN BELLINO,; JOAQUIN SACANELL; DIEGO LAMAS,; ANA GABRIELA LEYVA; NOEMI E. WALSOE DE RECA

ECS Transactions - Solid Oxide Fuel Cells 10 (SOFC-X)

Electrochemical Society

Año: 2007 vol. 7 p. 1299 - 1304

1938-5862

We investigated the performance of Ag/La0.6Sr0.4Co1-xFexO3 (x = 0;0.8) nanotube composite cathodes using samaria-doped ceria as electrolyte. These composites were prepared by mixing a commercial Ag paste and La0.6Sr0.4Co1-xFexO3 (x = 0;0.8) nanotubes synthesized by the pore wetting technique using plastic templates. Electrochemical impedance spectroscopy analyses showed that the incorporation of La0.6Sr0.4Co1-xFexO3 nanotubes significantly enhances the performance of the cathode in comparison to pure Ag due to their high specific surface area.