Abstract
The electrochemical performance of cathodes produced by infiltration of nitrates corresponding to the nominal compositions Co3O4,
LaCoO3, and La0.6Sr0.4Co1.05O3−δ into porous backbones of Ce0.9Gd0.1O1.95 has been studied. Characterization by electrochemical
impedance spectroscopy at 600◦C in air revealed that the lowest electrode polarization (Rp) value is obtained for La0.6Sr0.4Co1.05O3−δ
(0.062cm2), followed by LaCoO3 (0.079cm2), andCo3O4-infiltrated cathodes (0.27cm2). The surprisingly good performance
of LaCoO3- and Co3O4-infiltrated cathodes demonstrate the peculiarities encountered at the nanoscale and raise questions on the
necessity of Sr doping if the electrocatalyst is formed as nanoparticles using the infiltration technique.
©2012 The Electrochemical Society
Original language | English |
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Journal | Electrochemical and Solid-State Letters |
Volume | 15 |
Issue number | 4 |
Pages (from-to) | B54-B56 |
ISSN | 1099-0062 |
DOIs | |
Publication status | Published - 2012 |