DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yuk, Seongmin | ko |
dc.contributor.author | Lee, Dong Wook | ko |
dc.contributor.author | Song, Kah-Young | ko |
dc.contributor.author | Choi, Sungyu | ko |
dc.contributor.author | Lee, Dong-Hyun | ko |
dc.contributor.author | Doo, Gisu | ko |
dc.contributor.author | Hyun, Jonghyun | ko |
dc.contributor.author | Kwen, Jiyun | ko |
dc.contributor.author | Kim, Jun Young | ko |
dc.contributor.author | Kim, Hee-Tak | ko |
dc.date.accessioned | 2020-03-19T01:25:53Z | - |
dc.date.available | 2020-03-19T01:25:53Z | - |
dc.date.created | 2020-03-02 | - |
dc.date.created | 2020-03-02 | - |
dc.date.created | 2020-03-02 | - |
dc.date.created | 2020-03-02 | - |
dc.date.issued | 2020-02 | - |
dc.identifier.citation | JOURNAL OF POWER SOURCES, v.448 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10203/272390 | - |
dc.description.abstract | Ce-based materials have been widely used as a radical scavenger to improve the chemical durability of the membrane in polymer electrolyte fuel cells; however, any negative effects from Ce ions on power performance have not been reported as an issue before except for ionomer contamination by Ce3+. Herein, we propose and experimentally demonstrate the detrimental effect of Ce4+ on the Pt/C catalyst. Due to the strong oxidation power of Ce4+, Pt and carbon are subjected to oxidative decomposition under contact with Ce4+. Based on the electrochemical and spectroscopic analyses of the PVC stored in Ce3+ and Ce4+ electrolyte, Pt2+ dissolution and carbon corrosion by Ce4+ are verified. As a result, the active surface area and oxygen reduction reaction activity of PVC are considerably reduced after storage in the Ce4+ electrolyte. Additionally, at the membrane electrode assembly level, it is demonstrated that the Ce4+ leached out from the CeO2 causes a significant power performance decay along with the loss of the active surface area and an increase in the charge transfer resistance. The newly-found detrimental effect of Ce4+ on the PVC catalyst emphasizes the importance of preventing Ce4+ dissolution to improve the membrane durability by Ce-containing radical scavengers. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Detrimental effect of Ce4+ ion on the Pt/C catalyst in polymer electrolyte membrane fuel cells | - |
dc.type | Article | - |
dc.identifier.wosid | 000509632300051 | - |
dc.identifier.scopusid | 2-s2.0-85075469105 | - |
dc.type.rims | ART | - |
dc.citation.volume | 448 | - |
dc.citation.publicationname | JOURNAL OF POWER SOURCES | - |
dc.identifier.doi | 10.1016/j.jpowsour.2019.227447 | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.contributor.nonIdAuthor | Song, Kah-Young | - |
dc.contributor.nonIdAuthor | Kwen, Jiyun | - |
dc.contributor.nonIdAuthor | Kim, Jun Young | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Polymer electrolyte membrane fuel cell | - |
dc.subject.keywordAuthor | Catalyst degradation | - |
dc.subject.keywordAuthor | Cerium | - |
dc.subject.keywordAuthor | Radical scavenger | - |
dc.subject.keywordAuthor | Chemical durability | - |
dc.subject.keywordPlus | CHEMICAL DEGRADATION | - |
dc.subject.keywordPlus | RADICAL SCAVENGER | - |
dc.subject.keywordPlus | CERIUM | - |
dc.subject.keywordPlus | DURABILITY | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.subject.keywordPlus | MITIGATION | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | MECHANISM | - |
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