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dc.contributor.authorGu, H.
dc.contributor.authorXu, M.
dc.contributor.authorSong, Y.
dc.contributor.authorZhou, C.
dc.contributor.authorSu, Chao
dc.contributor.authorWang, Wei
dc.contributor.authorRan, R.
dc.contributor.authorZhou, W.
dc.contributor.authorShao, Zongping
dc.date.accessioned2023-05-09T02:16:03Z
dc.date.available2023-05-09T02:16:03Z
dc.date.issued2021
dc.identifier.citationGu, H. and Xu, M. and Song, Y. and Zhou, C. and Su, C. and Wang, W. and Ran, R. et al. 2021. SrCo0.8Ti0.1Ta0.1O3-δ perovskite: A new highly active and durable cathode material for intermediate-temperature solid oxide fuel cells. Composites Part B: Engineering. 213: ARTN 108726.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/91962
dc.identifier.doi10.1016/j.compositesb.2021.108726
dc.description.abstract

Reducing the operating temperatures of solid oxide fuel cells (SOFCs) to the intermediate-temperature range (IT, 400–650 °C) can bring about several benefits including cost effectiveness, prolonged lifetime and flexible sealing. Nevertheless, the accompanying deterioration of cathodic activity for oxygen reduction reaction (ORR) introduces a large obstacle for commercial applications of IT-SOFCs. Herein, a new perovskite SrCo0.8Ti0.1Ta0.1O3-δ (SCTT) is developed by co-doping titanium and tantalum into the B-site of parent SrCoO3 oxide, which may tackle this problem. At 400–650 °C, SCTT shows high electrical conductivities (65–142 S cm−1), appropriate oxygen vacancy concentrations (0.23–0.27) and high bulk diffusion capability due to a synergy between the two dopants in SCTT. Consequently, SCTT exhibits a favorable ORR activity with an area-specific resistance of only 0.17 Ω cm2 at 500 °C on samaria-doped ceria electrolyte, and the corresponding cell generates a high peak power density (PPD) of 0.90 W cm−2 at 500 °C with negligible performance decay for 180 h. Additionally, SCTT performs well in protonic ceramic fuel cells, achieving a PPD of 0.78 W cm−2 at 650 °C and a high durability for ~176 h at 550 °C. This work provides a new promising cathode material that may accelerate the commercialization of IT-SOFC technology.

dc.languageEnglish
dc.publisherELSEVIER SCI LTD
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP150104365
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP160104835
dc.subjectScience & Technology
dc.subjectTechnology
dc.subjectEngineering, Multidisciplinary
dc.subjectMaterials Science, Composites
dc.subjectEngineering
dc.subjectMaterials Science
dc.subjectSolid oxide fuel cell
dc.subjectPerovskite oxide
dc.subjectCo-doping
dc.subjectCathode
dc.subjectOxygen reduction
dc.subjectCO-DOPED PEROVSKITE
dc.subjectOXYGEN REDUCTION REACTION
dc.subjectHIGH-PERFORMANCE CATHODE
dc.subjectCRYSTAL-STRUCTURE
dc.subjectSURFACE EXCHANGE
dc.subjectELECTRONEGATIVITY
dc.subjectDIFFUSION
dc.subjectEFFICIENT
dc.subjectELECTROCATALYSTS
dc.subjectSRCOO3-DELTA
dc.titleSrCo0.8Ti0.1Ta0.1O3-δ perovskite: A new highly active and durable cathode material for intermediate-temperature solid oxide fuel cells
dc.typeJournal Article
dcterms.source.volume213
dcterms.source.issn1359-8368
dcterms.source.titleComposites Part B: Engineering
dc.date.updated2023-05-09T02:16:02Z
curtin.departmentWASM: Minerals, Energy and Chemical Engineering
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidSu, Chao [0000-0002-6396-3555]
curtin.contributor.orcidShao, Zongping [0000-0002-4538-4218]
curtin.contributor.researcheridSu, Chao [H-3119-2015]
curtin.contributor.researcheridShao, Zongping [B-5250-2013]
curtin.identifier.article-numberARTN 108726
dcterms.source.eissn1879-1069
curtin.contributor.scopusauthoridSu, Chao [26649633200]
curtin.contributor.scopusauthoridWang, Wei [57034524500]
curtin.contributor.scopusauthoridShao, Zongping [55904502000] [57200900274]
curtin.repositoryagreementV3


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