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Article: Stable, easily sintered Ca-Zn-doped YCrO3 as novel interconnect materials for co-fired yttrium-stabilized zirconia-based solid oxide fuel cells

TitleStable, easily sintered Ca-Zn-doped YCrO3 as novel interconnect materials for co-fired yttrium-stabilized zirconia-based solid oxide fuel cells
Authors
KeywordsInterconnect
Sintering Ability
Sofc
Sol-Gel Process
Yttrium Chromite
Issue Date2009
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour
Citation
Journal of Power Sources, 2009, v. 188 n. 2, p. 483-488 How to Cite?
AbstractIn order to develop co-fired yttrium-stabilized zirconia (YSZ)-based solid oxide fuel cells (SOFCs), stable and easily sintered Y0.7Ca0.3Cr1-xZnxO3- δ (x = 0-0.15) perovskite oxides were synthesized by the microwave-aided sol-gel process and then examined as novel ceramic interconnect materials. (The characterizations focused on phase structure, sintering behavior, relative density, electrical conductivity and thermal expansion.) The XRD analysis indicates that a pure orthorhombic perovskite phase was obtained for all the samples. Cell volume decreases as x increases from 0 to 0.10. The Y0.7Ca0.3Cr0.9Zn0.1O 3-δ (YCCZ10) powder exhibited the best sintering ability, and a relative density of 96.6% could be obtained for the sample sintered at 1400 °C for 4 h in air. The electrical conductivities of the specimens increase with the Zn2+ content at x ≤ 0.10, but then remarkably decrease at x = 0.15, which might relate to the over-range of the substitution amount of Zn (0.15) for Cr position. YCCZ10 shows a remarkable electrical conductivity of 20.9 S cm-1 at 850 °C in air, and a very suitable thermal expansion coefficient value of 10.8 × 10-6 K-1 (YSZ: ∼10.8 × 10-6 K-1). These investigations have indicated that YCCZ10 is a promising interconnect material for co-fired YSZ-based SOFCs. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/90897
ISSN
2015 Impact Factor: 6.333
2015 SCImago Journal Rankings: 2.008
ISI Accession Number ID
Funding AgencyGrant Number
Chinese Natural Science Foundation50572099
50730002
National High-tech R&D Program of China2007AA05Z157
Funding Information:

The authors would like to thank the financial support from Chinese Natural Science Foundation on contract No. 50572099, No. 50730002, and the financial support from the National High-tech R&D Program of China (Grant No.: 2007AA05Z157).

References

 

DC FieldValueLanguage
dc.contributor.authorWang, Sen_HK
dc.contributor.authorLin, Ben_HK
dc.contributor.authorDong, Yen_HK
dc.contributor.authorFang, Den_HK
dc.contributor.authorDing, Hen_HK
dc.contributor.authorLiu, Xen_HK
dc.contributor.authorMeng, Gen_HK
dc.date.accessioned2010-09-17T10:10:01Z-
dc.date.available2010-09-17T10:10:01Z-
dc.date.issued2009en_HK
dc.identifier.citationJournal of Power Sources, 2009, v. 188 n. 2, p. 483-488en_HK
dc.identifier.issn0378-7753en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90897-
dc.description.abstractIn order to develop co-fired yttrium-stabilized zirconia (YSZ)-based solid oxide fuel cells (SOFCs), stable and easily sintered Y0.7Ca0.3Cr1-xZnxO3- δ (x = 0-0.15) perovskite oxides were synthesized by the microwave-aided sol-gel process and then examined as novel ceramic interconnect materials. (The characterizations focused on phase structure, sintering behavior, relative density, electrical conductivity and thermal expansion.) The XRD analysis indicates that a pure orthorhombic perovskite phase was obtained for all the samples. Cell volume decreases as x increases from 0 to 0.10. The Y0.7Ca0.3Cr0.9Zn0.1O 3-δ (YCCZ10) powder exhibited the best sintering ability, and a relative density of 96.6% could be obtained for the sample sintered at 1400 °C for 4 h in air. The electrical conductivities of the specimens increase with the Zn2+ content at x ≤ 0.10, but then remarkably decrease at x = 0.15, which might relate to the over-range of the substitution amount of Zn (0.15) for Cr position. YCCZ10 shows a remarkable electrical conductivity of 20.9 S cm-1 at 850 °C in air, and a very suitable thermal expansion coefficient value of 10.8 × 10-6 K-1 (YSZ: ∼10.8 × 10-6 K-1). These investigations have indicated that YCCZ10 is a promising interconnect material for co-fired YSZ-based SOFCs. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jpowsouren_HK
dc.relation.ispartofJournal of Power Sourcesen_HK
dc.subjectInterconnecten_HK
dc.subjectSintering Abilityen_HK
dc.subjectSofcen_HK
dc.subjectSol-Gel Processen_HK
dc.subjectYttrium Chromiteen_HK
dc.titleStable, easily sintered Ca-Zn-doped YCrO3 as novel interconnect materials for co-fired yttrium-stabilized zirconia-based solid oxide fuel cellsen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jpowsour.2008.12.005en_HK
dc.identifier.scopuseid_2-s2.0-60949100849en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-60949100849&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume188en_HK
dc.identifier.issue2en_HK
dc.identifier.spage483en_HK
dc.identifier.epage488en_HK
dc.identifier.isiWOS:000264646900020-

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