Synthesis and characterization of La0.8Sr0.2MO3?δ (M=Mn, Fe, or Co) cathode materials by induction plasma technology |
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| Authors: | D Bouchard L Sun F Gitzhofer G M Brisard |
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| Affiliation: | (1) Department of Chemistry, Research Center for Electrochemistry, Plasma and Energy, Université de Sherbrooke, 2500 Boulevard Université, J 1K-2R1 Sherbrooke, Québec, Canada;(2) Department of Chemical Engineering, Research Center for Electrochemistry, Plasma and Energy, Université de Sherbrooke, 2500 Boulevard Université, J1K-2R1 Sherbrooke, Québec, Canada |
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| Abstract: | In this work, nanopowders of perovskite cathode materials (La0.8Sr0.2MnO3−δ, La0.8Sr0.2FeO3−δ, and La0.8Sr0.2CoO3−δ), for use in solid oxide fuel cells (SOFC), were successfully synthesized, using induction plasma techniques. Their compositions,
structures, morphology, particle size distributions, and BET specific surface areas were determined for comparison with their
counterparts prepared by the Pechini method and by the glycine-nitrate combustion (GNC) technique. The particle sizes of the
plasma-synthesized powders are mostly around 63 nm. These plasma-synthesized powders are generally globular, their BET specific
surface areas being about 26 m2g−1, approximately twice those of powders prepared by the GNC and Pechini methods. These plasma-synthesized powders are readily
reproducible and are not agglomerated. Their individual particle sizes and distributions are very independent of their composition. |
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| Keywords: | cathode materials ceramic powders induction plasma synthesis nanoparticles solid oxide fuel cells (SOFC) perovskite |
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