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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
Title | Stable, easily sintered Ca-Zn-doped YCrO3 as novel interconnect materials for co-fired yttrium-stabilized zirconia-based solid oxide fuel cells | ||||||
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Authors | |||||||
Keywords | Interconnect Sintering Ability Sofc Sol-Gel Process Yttrium Chromite | ||||||
Issue Date | 2009 | ||||||
Publisher | Elsevier 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? | ||||||
Abstract | In 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 Identifier | http://hdl.handle.net/10722/90897 | ||||||
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 1.857 | ||||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Wang, S | en_HK |
dc.contributor.author | Lin, B | en_HK |
dc.contributor.author | Dong, Y | en_HK |
dc.contributor.author | Fang, D | en_HK |
dc.contributor.author | Ding, H | en_HK |
dc.contributor.author | Liu, X | en_HK |
dc.contributor.author | Meng, G | en_HK |
dc.date.accessioned | 2010-09-17T10:10:01Z | - |
dc.date.available | 2010-09-17T10:10:01Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Journal of Power Sources, 2009, v. 188 n. 2, p. 483-488 | en_HK |
dc.identifier.issn | 0378-7753 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/90897 | - |
dc.description.abstract | In 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.language | eng | en_HK |
dc.publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour | en_HK |
dc.relation.ispartof | Journal of Power Sources | en_HK |
dc.subject | Interconnect | en_HK |
dc.subject | Sintering Ability | en_HK |
dc.subject | Sofc | en_HK |
dc.subject | Sol-Gel Process | en_HK |
dc.subject | Yttrium Chromite | en_HK |
dc.title | Stable, easily sintered Ca-Zn-doped YCrO3 as novel interconnect materials for co-fired yttrium-stabilized zirconia-based solid oxide fuel cells | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Lin, B:blin@hku.hk | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jpowsour.2008.12.005 | en_HK |
dc.identifier.scopus | eid_2-s2.0-60949100849 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-60949100849&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 188 | en_HK |
dc.identifier.issue | 2 | en_HK |
dc.identifier.spage | 483 | en_HK |
dc.identifier.epage | 488 | en_HK |
dc.identifier.isi | WOS:000264646900020 | - |
dc.identifier.issnl | 0378-7753 | - |