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Article: A cathode-supported SOFC with thin Ce0.8Sm0.2O1.9 electrolyte prepared by a suspension spray

TitleA cathode-supported SOFC with thin Ce0.8Sm0.2O1.9 electrolyte prepared by a suspension spray
Authors
KeywordsAmmonia Precipitation
Cathode-Supported Sofcs
Ce0.8Sm0.2O1.9
Suspension Spray
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jallcom
Citation
Journal of Alloys and Compounds, 2008, v. 465 n. 1-2, p. 285-290 How to Cite?
AbstractIn order to develop a cost-effective route to fabricate solid oxide fuel cells (SOFCs), a dense Ce0.8Sm0.2O1.9 (SDC) electrolyte was fabricated on a porous cathode based on a mixed conducting La0.8Sr0.2FeO3-δ (LSF) via a suspension spray/co-firing process. For the purpose of shrinkage matching between the cathode support and the electrolyte membrane, nano-SDC1 powder for the easily sinterable electrolyte was synthesized with ammonia as the precipitant from the nitrates, whereas SDC2 powder prepared by modified glycine-nitrate method (GNP) was added into cathode to favor the shrinkage of La0.8Sr0.2FeO3-δ(LSF). Sm-doped ceria solid solution was directly formed during precipitation at 50 °C, and this is ascribed to the role of OH-. The powders calcined at 800 °C for 2 h were still uniform and exhibited an average particle size of 20 nm. The bi-layer with 10 μm dense SDC electrolyte was obtained by co-sintering at 1250 °C for 5 h. A thin and well-adherent anode was formed by depositing ultra-fine NiO-SDC powders, followed by sintering at 1000 °C. The obtained single cells were tested with humidified (3% H2O) hydrogen as fuel and the static air as oxidant. The maximum power density reached 67.2 mW/cm2 at 600 °C. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/91056
ISSN
2015 Impact Factor: 3.014
2015 SCImago Journal Rankings: 1.006
ISI Accession Number ID
Funding AgencyGrant Number
Chinese Natural Science Foundation50571099
Chinese Research Foundation20040358025
Funding Information:

The authors would like to thank the financial support from Chinese Natural Science Foundation on contract no. 50571099 and Chinese Research Foundation for the Doctors (20040358025).

References

 

DC FieldValueLanguage
dc.contributor.authorLin, Ben_HK
dc.contributor.authorSun, Wen_HK
dc.contributor.authorXie, Ken_HK
dc.contributor.authorDong, Yen_HK
dc.contributor.authorDong, Den_HK
dc.contributor.authorLiu, Xen_HK
dc.contributor.authorGao, Jen_HK
dc.contributor.authorMeng, Gen_HK
dc.date.accessioned2010-09-17T10:12:23Z-
dc.date.available2010-09-17T10:12:23Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal of Alloys and Compounds, 2008, v. 465 n. 1-2, p. 285-290en_HK
dc.identifier.issn0925-8388en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91056-
dc.description.abstractIn order to develop a cost-effective route to fabricate solid oxide fuel cells (SOFCs), a dense Ce0.8Sm0.2O1.9 (SDC) electrolyte was fabricated on a porous cathode based on a mixed conducting La0.8Sr0.2FeO3-δ (LSF) via a suspension spray/co-firing process. For the purpose of shrinkage matching between the cathode support and the electrolyte membrane, nano-SDC1 powder for the easily sinterable electrolyte was synthesized with ammonia as the precipitant from the nitrates, whereas SDC2 powder prepared by modified glycine-nitrate method (GNP) was added into cathode to favor the shrinkage of La0.8Sr0.2FeO3-δ(LSF). Sm-doped ceria solid solution was directly formed during precipitation at 50 °C, and this is ascribed to the role of OH-. The powders calcined at 800 °C for 2 h were still uniform and exhibited an average particle size of 20 nm. The bi-layer with 10 μm dense SDC electrolyte was obtained by co-sintering at 1250 °C for 5 h. A thin and well-adherent anode was formed by depositing ultra-fine NiO-SDC powders, followed by sintering at 1000 °C. The obtained single cells were tested with humidified (3% H2O) hydrogen as fuel and the static air as oxidant. The maximum power density reached 67.2 mW/cm2 at 600 °C. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jallcomen_HK
dc.relation.ispartofJournal of Alloys and Compoundsen_HK
dc.subjectAmmonia Precipitationen_HK
dc.subjectCathode-Supported Sofcsen_HK
dc.subjectCe0.8Sm0.2O1.9en_HK
dc.subjectSuspension Sprayen_HK
dc.titleA cathode-supported SOFC with thin Ce0.8Sm0.2O1.9 electrolyte prepared by a suspension sprayen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jallcom.2007.10.063en_HK
dc.identifier.scopuseid_2-s2.0-50149090694en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-50149090694&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume465en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage285en_HK
dc.identifier.epage290en_HK
dc.identifier.isiWOS:000259980000052-

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