DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cha, Jung-Eun | - |
dc.contributor.author | Cho, Won Jae | - |
dc.contributor.author | Hwang, Jeemin | - |
dc.contributor.author | Seo, Dong-Jun | - |
dc.contributor.author | Choi, Young-Woo | - |
dc.contributor.author | Kim, Won Bae | - |
dc.date.accessioned | 2023-03-02T00:51:17Z | - |
dc.date.available | 2023-03-02T00:51:17Z | - |
dc.date.created | 2022-09-14 | - |
dc.date.issued | 2022-08 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/116125 | - |
dc.description.abstract | In this study, a sulfonated poly(ether sulfone) having cardo-type fluorenyl groups (FL-SPES) was investigated as a cathodic binder to improve fuel cell performance via increased the oxygen diffusion in the cathode. The maximum power density achieved by using the membrane electrode assembly (MEA) prepared with FL-SPES with a low ion exchange capacity (IEC) of 1.31 meq g(-1) was 520 mW cm(-2), which is more than twice as high as that of BP-SPES (210 mW cm(-2)) having typical biphenyl groups with a similar IEC. At high IEC of 1.55 meq g(-1), the power density obtained by using BP-SPES was improved to 454 mW cm(-2) but remained lower than that of FL-SPES. In addition, although the IEC, swelling degree, and specific resistance were similar to each other, the gas permeability of FL-SPES was improved by approximately three times compared to that of BP-SPES. The steric structure of cardo-type FL-SPES increased the free volume between the polymer backbones, leading to an increase in gas transfer. Consequently, oxygen diffusion was promoted at the cathode, resulting in improved fuel cell performance. | - |
dc.language | English | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.title | Fuel cell performance improvement via the steric effect of a hydrocarbon-based binder for cathode in proton exchange membrane fuel cells | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-022-18464-6 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.12, no.1 | - |
dc.identifier.wosid | 000842145300072 | - |
dc.citation.number | 1 | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 12 | - |
dc.contributor.affiliatedAuthor | Cha, Jung-Eun | - |
dc.contributor.affiliatedAuthor | Kim, Won Bae | - |
dc.identifier.scopusid | 2-s2.0-85136060616 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | RANDOM STATISTICAL COPOLYMERS | - |
dc.subject.keywordPlus | TRANSPORT-PROPERTIES | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | ENERGY | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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