Synthesis and characterization of cobaltite nanotubes for solid-oxide fuel cell cathodes

La1-xSrxCo1-yFeyO3-δ oxides are good candidates for solid oxide fuel cell (SOFC) cathodes because these materials present high ionic and electronic conductivity, and compatibility with Cerium Gadolinium Oxide (CGO) electrolytes allowing a lower operation temperature. In this work, we report the synt...

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Bibliographic Details
Published in:Journal of physics. Conference series 2009-05, Vol.167 (1), p.012042
Main Authors: Napolitano, F, Baqué, L, Troiani, H, Granada, M, Serquis, A
Format: Article
Language:English
Subjects:
Cell cathodes
Cerium gadolinium oxides
Electrolytes
Fuel cells
Gadolinium
Gadolinium oxide
Gadolinium oxides
Morphology
Nanotubes
Physics
Scanning microscopy
Sintering (powder metallurgy)
Solid oxide fuel cells
Synthesis
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Summary:La1-xSrxCo1-yFeyO3-δ oxides are good candidates for solid oxide fuel cell (SOFC) cathodes because these materials present high ionic and electronic conductivity, and compatibility with Cerium Gadolinium Oxide (CGO) electrolytes allowing a lower operation temperature. In this work, we report the synthesis of La0.4Sr0.6Co0.8Fe0.2O3-δ (LSCF) nanotubes prepared by a porous polycarbonate membrane approach, obtaining different microstructures depending on sintering conditions. The structure and morphology of the nanotubes and deposited films were characterized by X-ray diffraction, transmission and scanning microscopy. Finally, we obtained nanostructured films of vertically aligned LSCF tubes deposited over the whole surface of CGO pellets with diameter up to 2.5cm in a direct and single step process.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/167/1/012042