Electrodes for solid oxide fuel cells based on infiltration of Co-based materials

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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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 languageEnglish
JournalElectrochemical and Solid-State Letters
Publication date2012
Volume15
Issue4
PagesB54-B56
ISSN1099-0062
DOIs
StatePublished

Bibliographical note

Copyright The Electrochemical Society, Inc. [2012]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

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