DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yuk, Seongmin | ko |
dc.contributor.author | Jung, Jinkwan | ko |
dc.contributor.author | Song, Kah-Young | ko |
dc.contributor.author | Lee, Dong Wook | ko |
dc.contributor.author | Lee, Dong-Hyun | ko |
dc.contributor.author | Choi, Sungyu | 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 | 2022-10-25T09:00:31Z | - |
dc.date.available | 2022-10-25T09:00:31Z | - |
dc.date.created | 2022-10-25 | - |
dc.date.issued | 2023-01 | - |
dc.identifier.citation | CHEMICAL ENGINEERING JOURNAL, v.452 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | http://hdl.handle.net/10203/299096 | - |
dc.description.abstract | A radical scavenger, CeO2, effectively improves the chemical durability of fuel cell membranes, however, Ce4+ ions eluted from the CeO2 lead to Pt/C degradation and diminished power performance. To address the detri-mental effect, we prepared a carbon nitride (C2N) coating on CeO2 nanoparticles. The C2N protective layer reduced the Ce4+ dissolution rate 11-fold compared with pristine CeO2. Density functional theory calculations suggest that the C2N structure suppresses Ce4+ dissolution by strongly binding the Ce4+. Furthermore, it has a profoundly lowered band gap in contact with CeO2, enabling C2N-mediated electron transfer for efficient radical scavenging reaction. A membrane electrode assembly fabricated using the C2N-coated CeO2 exhibited excellent open circuit voltage durability for more than 600 h, without any loss in power performance. The judicious surface engineering of CeO2 avoids the deep-rooted trade-off between membrane and catalyst layer durability. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Addressing the detrimental effect of CeO2 radical scavenger on the durability of polymer electrolyte membrane fuel cells | - |
dc.type | Article | - |
dc.identifier.wosid | 000868156400001 | - |
dc.identifier.scopusid | 2-s2.0-85137778068 | - |
dc.type.rims | ART | - |
dc.citation.volume | 452 | - |
dc.citation.publicationname | CHEMICAL ENGINEERING JOURNAL | - |
dc.identifier.doi | 10.1016/j.cej.2022.139061 | - |
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 | C2N protective layer | - |
dc.subject.keywordAuthor | CeO2 radical scavenger | - |
dc.subject.keywordAuthor | C2N-mediated electron transfer | - |
dc.subject.keywordPlus | CHEMICAL DEGRADATION | - |
dc.subject.keywordPlus | CERIUM | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | DISSOLUTION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | MITIGATION | - |
dc.subject.keywordPlus | DEPOSITION | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | MIGRATION | - |
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