Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Vinothkannan, Mohanraj | - |
dc.contributor.author | Kim, Ae Rhan | - |
dc.contributor.author | Ryu, Sung Kwan | - |
dc.contributor.author | Yoo, Dong Jin | - |
dc.date.accessioned | 2023-01-11T19:40:16Z | - |
dc.date.available | 2023-01-11T19:40:16Z | - |
dc.date.created | 2022-04-20 | - |
dc.date.issued | 2022-05 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/17401 | - |
dc.description.abstract | Development of a high-performance and durable proton exchange membrane (PEM) for low relative humidity (RH) operation is imperative for further commercialization of hydrogen-air fuel cell (HAFC). In this work, we reported the synthesize of carbon nanotubes-unzipped carbon nanotubes (CNTs-UCNTs) hybrid via calcination process with ammonium fluoride. Further, the 4-benzenediazonium sulfonate was used to sulfonate both CNTs and UCNTs to form sulfonated CNTs-sulfonated UCNTs (SCNTs-SUCNTs) hybrid. The unzipping enlarged the surface area of CNTs-UCNTs hybrid and facilitated the accommodation of a large density of sulfonic acid (-SO3H) groups during sulfonation. Thus, SCNTs-SUCNTs hybrid incorporation with the host Nafion matrix results a uniform composite membrane with high density of –SO3H groups per unit volume. It positively impacts thermal, mechanical and oxidative stabilities, and physicochemical performances of composite membrane. Besides, Nafion/SCNTs-SUCNTs composite membrane afforded credible proton conductivity, current output, power output, and durability, which are 0.015 S cm−1, 1.000 A cm−2, 0.343 W cm−2, and 0.15 mV h−1, respectively when operating the HAFC at 60 °C under 20% RH. In contrast, bare Nafion, Nafion/CNTs, and Nafion-212 membranes exhibited inferior proton conductivity, current output, power output, and durability under identical HAFC operating conditions. © 2022 Elsevier B.V. | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.title | Structurally modulated and functionalized carbon nanotubes as potential filler for Nafion matrix toward improved power output and durability in proton exchange membrane fuel cells operating at reduced relative humidity | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.memsci.2022.120393 | - |
dc.identifier.wosid | 000784568600001 | - |
dc.identifier.scopusid | 2-s2.0-85126760719 | - |
dc.identifier.bibliographicCitation | Journal of Membrane Science, v.649 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Nafion composite membrane | - |
dc.subject.keywordAuthor | SCNTs-SUCNTs hybrid | - |
dc.subject.keywordAuthor | Low relative humidity | - |
dc.subject.keywordAuthor | Hydrogen-air fuel cells | - |
dc.subject.keywordPlus | DOPED GRAPHITE NANOFIBERS | - |
dc.subject.keywordPlus | ELECTROLYTE MEMBRANE | - |
dc.subject.keywordPlus | COMPOSITE MEMBRANE | - |
dc.subject.keywordPlus | ELEVATED-TEMPERATURE | - |
dc.subject.keywordPlus | CATALYTIC-ACTIVITY | - |
dc.subject.keywordPlus | HYBRID MEMBRANE | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | FLUORINE | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.citation.title | Journal of Membrane Science | - |
dc.citation.volume | 649 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering; Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical; Polymer Science | - |
dc.type.docType | Article | - |
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