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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 ,
Masaru Miyayama  and
Enrico Traversa
Enrico Magnone
Affiliation:
[email protected], 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:
[email protected], The University of Tokyo, Research Center for Advanced Science and Technology, 4-6-1, Komaba, Meguro-ku, Tokyo, 153-8904, Japan
Enrico Traversa
Affiliation:
[email protected], University of Rome "Tor Vergata", Department of Chemical Science and Technology, Via della Ricerca Scientifica, Roma, 00133, Italy
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Abstract

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

Keywords

chemical synthesisnanostructureenergetic material
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 972: Symposium AA – Solid-State Ionics—2006 , 2006 , 0972-AA11-05
Copyright
Copyright © Materials Research Society 2007

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