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Article: A modeling study on concentration overpotentials of a reversible solid oxide fuel cell

TitleA modeling study on concentration overpotentials of a reversible solid oxide fuel cell
Authors
KeywordsConcentration overpotentials
Dual modes
Reversible solid oxide fuel cell (RSOFC)
Solid oxide steam electrolyzer (SOSE)
Issue Date2006
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour
Citation
Journal Of Power Sources, 2006, v. 163 n. 1 SPEC. ISS., p. 460-466 How to Cite?
AbstractA single reversible solid oxide fuel cell (RSOFC) can perform dual functions: (1) as a solid oxide steam electrolyzer (SOSE) for hydrogen production and (2) as a solid oxide fuel cell (SOFC) for power generation. Thus, RSOFC can potentially offer a low-cost approach to support hydrogen economy. A modeling study has been conducted to analyze the important concentration overpotentials in both SOSE and SOFC modes of operation. The quantitative analyses show that in the SOSE mode, the hydrogen electrode is vulnerable to high concentration overpotential and limiting current density. Oppositely, in the SOFC mode, the oxygen electrode is vulnerable to above problems. If the SOSE and SOFC modes are considered separately, a RSOFC should be oxygen-electrode-supported and hydrogen-electrode-supported, respectively. For this reason, comprehensive analysis is very important to optimize the structure of the electrode-support to maximize the overall efficiency of a RSOFC performing dual functions. The modeling study signifies the difference between the SOSE and SOFC modes and provides insights in the operating mechanisms of RSOFC. The present model can be further extended to conduct more simulations for design optimization. © 2006 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/76216
ISSN
2015 Impact Factor: 6.333
2015 SCImago Journal Rankings: 2.008
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNi, Men_HK
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-09-06T07:18:45Z-
dc.date.available2010-09-06T07:18:45Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Power Sources, 2006, v. 163 n. 1 SPEC. ISS., p. 460-466en_HK
dc.identifier.issn0378-7753en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76216-
dc.description.abstractA single reversible solid oxide fuel cell (RSOFC) can perform dual functions: (1) as a solid oxide steam electrolyzer (SOSE) for hydrogen production and (2) as a solid oxide fuel cell (SOFC) for power generation. Thus, RSOFC can potentially offer a low-cost approach to support hydrogen economy. A modeling study has been conducted to analyze the important concentration overpotentials in both SOSE and SOFC modes of operation. The quantitative analyses show that in the SOSE mode, the hydrogen electrode is vulnerable to high concentration overpotential and limiting current density. Oppositely, in the SOFC mode, the oxygen electrode is vulnerable to above problems. If the SOSE and SOFC modes are considered separately, a RSOFC should be oxygen-electrode-supported and hydrogen-electrode-supported, respectively. For this reason, comprehensive analysis is very important to optimize the structure of the electrode-support to maximize the overall efficiency of a RSOFC performing dual functions. The modeling study signifies the difference between the SOSE and SOFC modes and provides insights in the operating mechanisms of RSOFC. The present model can be further extended to conduct more simulations for design optimization. © 2006 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.subjectConcentration overpotentialsen_HK
dc.subjectDual modesen_HK
dc.subjectReversible solid oxide fuel cell (RSOFC)en_HK
dc.subjectSolid oxide steam electrolyzer (SOSE)en_HK
dc.titleA modeling study on concentration overpotentials of a reversible solid oxide fuel cellen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0378-7753&volume=163&spage=460&epage=466&date=2006&atitle=A+modeling+study+on+concentration+overpotentials+of+a+reversible+solid+oxide+fuel+cellen_HK
dc.identifier.emailLeung, MKH:en_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.doi10.1016/j.jpowsour.2006.09.024en_HK
dc.identifier.scopuseid_2-s2.0-33947601358en_HK
dc.identifier.hkuros142192en_HK
dc.identifier.hkuros132229-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33947601358&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume163en_HK
dc.identifier.issue1 SPEC. ISS.en_HK
dc.identifier.spage460en_HK
dc.identifier.epage466en_HK
dc.identifier.isiWOS:000244317100077-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridNi, M=9268339800en_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

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