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Article: Parametric study of solid oxide steam electrolyzer for hydrogen production

TitleParametric study of solid oxide steam electrolyzer for hydrogen production
Authors
KeywordsElectrochemistry model
Hydrogen production
Porous media
Solid oxide steam electrolyzer
Issue Date2007
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydene
Citation
International Journal of Hydrogen Energy, 2007, v. 32 n. 13, p. 2305-2313 How to Cite?
AbstractA theoretical model was developed to study the electrical characteristics of a solid oxide steam electrolyzer (SOSE) for hydrogen production. The activation and concentration overpotentials at the electrodes as well as the ohmic overpotential at the electrolyte were considered as the main sources of voltage loss. The Butler-Volmer equation, Fick's model, and Ohm's law were applied to characterize the overpotentials. The theoretical model was validated as the simulation results agreed well with the experimental data from the literature. In the study of the component thickness effect, anode-support SOSE configuration was identified as the most favorable design. Further parametric analyses were performed to study the effects of material properties and operating conditions on the anode-supported SOSE cell performance. The results have shown that increasing electrode porosity and pore size can reduce the voltage loss. In the operation, both temperature and steam molar fraction can be increased to enhance the SOSE electrical efficiency. The pressure should be regulated depending on the current density. The electrochemistry model can be used to perform more analyses to gain insightful understanding of the SOSE hydrogen production principles and to optimize the SOSE cell and system designs. © 2007 International Association for Hydrogen Energy.
Persistent Identifierhttp://hdl.handle.net/10722/156912
ISSN
2015 Impact Factor: 3.205
2015 SCImago Journal Rankings: 1.330
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNi, Men_HK
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2012-08-08T08:44:31Z-
dc.date.available2012-08-08T08:44:31Z-
dc.date.issued2007en_HK
dc.identifier.citationInternational Journal of Hydrogen Energy, 2007, v. 32 n. 13, p. 2305-2313en_HK
dc.identifier.issn0360-3199en_HK
dc.identifier.urihttp://hdl.handle.net/10722/156912-
dc.description.abstractA theoretical model was developed to study the electrical characteristics of a solid oxide steam electrolyzer (SOSE) for hydrogen production. The activation and concentration overpotentials at the electrodes as well as the ohmic overpotential at the electrolyte were considered as the main sources of voltage loss. The Butler-Volmer equation, Fick's model, and Ohm's law were applied to characterize the overpotentials. The theoretical model was validated as the simulation results agreed well with the experimental data from the literature. In the study of the component thickness effect, anode-support SOSE configuration was identified as the most favorable design. Further parametric analyses were performed to study the effects of material properties and operating conditions on the anode-supported SOSE cell performance. The results have shown that increasing electrode porosity and pore size can reduce the voltage loss. In the operation, both temperature and steam molar fraction can be increased to enhance the SOSE electrical efficiency. The pressure should be regulated depending on the current density. The electrochemistry model can be used to perform more analyses to gain insightful understanding of the SOSE hydrogen production principles and to optimize the SOSE cell and system designs. © 2007 International Association for Hydrogen Energy.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydeneen_HK
dc.relation.ispartofInternational Journal of Hydrogen Energyen_HK
dc.subjectElectrochemistry modelen_HK
dc.subjectHydrogen productionen_HK
dc.subjectPorous mediaen_HK
dc.subjectSolid oxide steam electrolyzeren_HK
dc.titleParametric study of solid oxide steam electrolyzer for hydrogen productionen_HK
dc.typeArticleen_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_fulltexten_US
dc.identifier.doi10.1016/j.ijhydene.2007.03.001en_HK
dc.identifier.scopuseid_2-s2.0-34548132763en_HK
dc.identifier.hkuros142200-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548132763&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume32en_HK
dc.identifier.issue13en_HK
dc.identifier.spage2305en_HK
dc.identifier.epage2313en_HK
dc.identifier.isiWOS:000250062900024-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNi, M=9268339800en_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

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