Downloads: 59

Files in This Item:
File Description SizeFormat 
j.jpowsour.2016.06.110.pdf817.28 kBAdobe PDFView/Open
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMiyoshi, Kotaja
dc.contributor.authorIwai, Hiroshija
dc.contributor.authorKishimoto, Masashija
dc.contributor.authorSaito, Motohiroja
dc.contributor.authorYoshida, Hideoja
dc.contributor.alternative岩井, 裕ja
dc.contributor.alternative岸本, 将史ja
dc.contributor.alternative齋藤, 元浩ja
dc.contributor.alternative吉田, 英生ja
dc.date.accessioned2017-03-22T02:37:47Z-
dc.date.available2017-03-22T02:37:47Z-
dc.date.issued2016-09-15ja
dc.identifier.issn0378-7753ja
dc.identifier.urihttp://hdl.handle.net/2433/218982-
dc.description.abstractA three-dimensional numerical model of a single solid oxide fuel cell (SOFC) considering chromium poisoning on the cathode side has been developed to investigate the evolution of the SOFC performance over long-term operation. The degradation model applied in the simulation describes the loss of the cathode electrochemical activity as a decrease in the active triple-phase boundary (TPB) length. The calculations are conducted for two types of cell: lanthanum strontium manganite (LSM)/yttria-stabilized zirconia (YSZ)/Ni-YSZ and LSM-YSZ/YSZ/Ni-YSZ. Their electrode microstructures are acquired by imaging with a focused ion beam scanning-electron microscope (FIB-SEM). The simulation results qualitatively reproduce the trends of chromium poisoning reported in the literature. It has been revealed that the performance degradation by chromium is primarily due to an increase in the cathode activation overpotential. In addition, in the LSM-YSZ composite cathode, TPBs in the vicinity of the cathode–electrolyte interface preferentially deteriorate, shifting the active reaction site towards the cathode surface. This also results in an increase in the cathode ohmic loss associated with oxide ion conduction through the YSZ phase. The effects of the cell temperature, the partial pressure of steam at the chromium source, the cathode microstructure, and the cathode thickness on chromium poisoning are also discussed.ja
dc.format.mimetypeapplication/pdfja
dc.language.isoengja
dc.publisherElsevierja
dc.rights© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ja
dc.rightsThe full-text file will be made open to the public on 15 September 2018 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.ja
dc.rightsThis is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。ja
dc.subjectSolid oxide fuel cellsja
dc.subjectChromium poisoningja
dc.subjectTriple-phase boundaryja
dc.subjectNumerical simulationja
dc.titleChromium poisoning in (La,Sr)MnO3 cathode: Three-dimensional simulation of a solid oxide fuel cellja
dc.type.niitypeJournal Articleja
dc.identifier.jtitleJournal of Power Sourcesja
dc.identifier.volume326ja
dc.identifier.spage331ja
dc.identifier.epage340ja
dc.relation.doi10.1016/j.jpowsour.2016.06.110ja
dc.textversionauthorja
dc.addressDepartment of Aeronautics and Astronautics, Kyoto Universityja
dc.addressDepartment of Aeronautics and Astronautics, Kyoto Universityja
dc.addressDepartment of Aeronautics and Astronautics, Kyoto Universityja
dc.addressDepartment of Aeronautics and Astronautics, Kyoto Universityja
dc.addressDepartment of Aeronautics and Astronautics, Kyoto Universityja
Appears in Collections:Journal Articles

Show simple item record

Export to RefWorks


Export Format: 


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.