Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 남관우 | * |
dc.date.accessioned | 2022-11-03T16:31:04Z | - |
dc.date.available | 2022-11-03T16:31:04Z | - |
dc.date.issued | 2022 | * |
dc.identifier.issn | 0925-8388 | * |
dc.identifier.other | OAK-32479 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/262866 | - |
dc.description.abstract | Low chemical stability of membrane-electrode assembly (MEA) remains a major obstacle to commercialization of polymer electrolyte membrane fuel cells (PEMFCs) for fuel cell electric vehicles (FCEVs). In this study, we doubly anchored cerium-ion in the catalyst layer by forming a complex with the 15-crown-5-ether and additionally grafting to the multiwall carbon nanotube (Ce/CRE-graft-CNT) as a long-lasting radical scavenger. To confirm the effect of Ce/CRE-graft-CNT on chemical durability, the binding energy between the cerium-ion and crown ether was identified with DFT calculations. The incorporation of Ce/CRE-graft-CNT into catalyst layer decreases decay rate of open circuit voltage (OCV) by 4 times from 2.13 to 0.56 mV h−1 for 210 h operation. The performance retention of the Ce/CRE-graft-CNT (70.8 %) at 0.6 V is also higher than that of the Ce/CRE-blend-CNT (44.8 %). The results indicate that the doubly anchored Ce/CRE-graft-CNT has a more retention capability as a radical scavenger. Therefore, a tightly bounded cerium-ion/crown ether complex with CNT can provide a strategy to improve the chemical durability of MEAs. © 2022 The Authors | * |
dc.language | English | * |
dc.publisher | Elsevier Ltd | * |
dc.subject | Carbon nanotube | * |
dc.subject | Cerium ion | * |
dc.subject | Crown ether | * |
dc.subject | Polymer electrolyte membrane fuel cell | * |
dc.subject | Radical scavenger | * |
dc.title | Enhanced chemical durability of polymer electrolyte membrane fuel cells by crown ether grafted carbon nanotube | * |
dc.type | Article | * |
dc.relation.volume | 928 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | Journal of Alloys and Compounds | * |
dc.identifier.doi | 10.1016/j.jallcom.2022.167227 | * |
dc.identifier.wosid | WOS:000875879400002 | * |
dc.identifier.scopusid | 2-s2.0-85138511863 | * |
dc.author.google | Oh K.-H. | * |
dc.author.google | Goo Y. | * |
dc.author.google | Kim M. | * |
dc.author.google | Park J. | * |
dc.author.google | Nam K.W. | * |
dc.author.google | Kim H. | * |
dc.contributor.scopusid | 남관우(55641492400) | * |
dc.date.modifydate | 20240322131147 | * |