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Article: Micro-scale modeling of a functionally graded Ni-YSZ anode

TitleMicro-scale modeling of a functionally graded Ni-YSZ anode
Authors
KeywordsDesign optimization
Fuel cells
Microstructure
Modeling
Issue Date2007
PublisherWiley - VCH Verlag GmbH & Co KGaA.
Citation
Chemical Engineering and Technology, 2007, v. 30 n. 5, p. 587-592 How to Cite?
AbstractA mathematical model was developed to investigate the coupled transport and electrochemical reactions in a nickel-yttrial-stablized zirconia (Ni-YSZ) anode for use in solid oxide fuel cells (SOFCs). The modeling results were consistent with experimental data from the literature. Comparison between conventional non-graded (uniform random composites) and two types of functionally graded electrodes (FGE), namely particle size graded and porosity graded SOFC anodes were conducted to evaluate the potential of FGE for SOFC. Improved performance of both types of FGE was observed due to reduced mass transport resistance and increased volumetric reactive surface area close to the electrode-electrolyte interface. It was found that the particle size graded SOFC anode showed the best performance. This paper demonstrates that the SOFC performance could be enhanced by modifying the microstructures of the electrodes. The results presented in this paper provide a better understanding of the working mechanisms of SOFC electrodes and could serve as an important reference for design optimizations. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Persistent Identifierhttp://hdl.handle.net/10722/75702
ISSN
2015 Impact Factor: 2.385
2015 SCImago Journal Rankings: 0.633
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNi, Men_HK
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-09-06T07:13:44Z-
dc.date.available2010-09-06T07:13:44Z-
dc.date.issued2007en_HK
dc.identifier.citationChemical Engineering and Technology, 2007, v. 30 n. 5, p. 587-592en_HK
dc.identifier.issn0930-7516en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75702-
dc.description.abstractA mathematical model was developed to investigate the coupled transport and electrochemical reactions in a nickel-yttrial-stablized zirconia (Ni-YSZ) anode for use in solid oxide fuel cells (SOFCs). The modeling results were consistent with experimental data from the literature. Comparison between conventional non-graded (uniform random composites) and two types of functionally graded electrodes (FGE), namely particle size graded and porosity graded SOFC anodes were conducted to evaluate the potential of FGE for SOFC. Improved performance of both types of FGE was observed due to reduced mass transport resistance and increased volumetric reactive surface area close to the electrode-electrolyte interface. It was found that the particle size graded SOFC anode showed the best performance. This paper demonstrates that the SOFC performance could be enhanced by modifying the microstructures of the electrodes. The results presented in this paper provide a better understanding of the working mechanisms of SOFC electrodes and could serve as an important reference for design optimizations. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.en_HK
dc.languageengen_HK
dc.publisherWiley - VCH Verlag GmbH & Co KGaA.en_HK
dc.relation.ispartofChemical Engineering and Technologyen_HK
dc.subjectDesign optimizationen_HK
dc.subjectFuel cellsen_HK
dc.subjectMicrostructureen_HK
dc.subjectModelingen_HK
dc.titleMicro-scale modeling of a functionally graded Ni-YSZ anodeen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0930-7516&volume=30&issue=5&spage=587&epage=592&date=2007&atitle=Micro-scale+modeling+of+a+functionally+graded+Ni-YSZ+anodeen_HK
dc.identifier.emailLeung, MKH: mkhleung@hkucc.hku.hken_HK
dc.identifier.emailLeung, DYC: ycleung@hku.hken_HK
dc.identifier.authorityLeung, MKH=rp00148en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/ceat.200600385en_HK
dc.identifier.scopuseid_2-s2.0-34249038621en_HK
dc.identifier.hkuros132223en_HK
dc.identifier.hkuros142194-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34249038621&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue5en_HK
dc.identifier.spage587en_HK
dc.identifier.epage592en_HK
dc.identifier.isiWOS:000246636100005-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridNi, M=9268339800en_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

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