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Low Temperature Synthesis and Electrochemical Properties of M0.8Sr0.2Co1-xFexO3 (M = Ba, La, Pr) Nanoparticles: Effect of Grain Size on Lattice Symmetry

Published online by Cambridge University Press:  26 February 2011

Enrico Magnone
Affiliation:, University of Rome Tor Vergata, Dept. of Chemical Science and Technology, via della Ricerca Scientifica 1, Rome, I-00133, Italy, 39-06-7259-4492, 39-06-7259-4328
Masaru Miyayama
Affiliation:, The University of Tokyo, Research Center for Advanced Science and Technology, 4-6-1, Komaba, Meguro-ku, Tokyo, 153-8904, Japan
Enrico Traversa
Affiliation:, University of Rome "Tor Vergata", Department of Chemical Science and Technology, Via della Ricerca Scientifica, Roma, 00133, Italy
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This study was performed to investigate the effect of grain size on crystallographic structure and electrochemistry properties for nanocrystalline La0.8Sr0.2Co1-xFexO3 (x = 0.1 and 0.9) powders, as a suitable model for SOFC cathodes. Different sets of perovskite-type mixed oxides were successfully prepared by the amorphous citrate method. A particle size dependent modification in the lattice parameters of La0.8Sr0.2Co1-xFexO3 nanocrystalline powders was observed. Clear correlations between crystal size, oxygen content, crystallographic structure, and electrochemical performance were observed

Research Article
Copyright © Materials Research Society 2007

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