DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Dong Wook | ko |
dc.contributor.author | Hyun, Jonghyun | ko |
dc.contributor.author | Oh, Euntaek | ko |
dc.contributor.author | Seok, Kyunghwa | ko |
dc.contributor.author | Bae, Hanmin | ko |
dc.contributor.author | Park, Jeesoo | ko |
dc.contributor.author | Kim, Hee-Tak | ko |
dc.date.accessioned | 2024-04-26T11:00:23Z | - |
dc.date.available | 2024-04-26T11:00:23Z | - |
dc.date.created | 2024-04-26 | - |
dc.date.created | 2024-04-26 | - |
dc.date.issued | 2024-01 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v.16, no.4, pp.4637 - 4647 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://hdl.handle.net/10203/319238 | - |
dc.description.abstract | The interface between the catalyst and the ionomer in the catalyst layer of polymer electrolyte membrane fuel cells (PEMFCs) has been a subject of keen interest, but its effect on durability has not been fully understood due to the complexity of the catalyst layer structure. Herein, we utilize a Pt nanoparticle (NP) array electrode fabricated using a block copolymer template as the platform for a focused investigation of the interfacial change between the Nafion thin film and the Pt NP under a constant potential. A set of analyses for the electrodes treated with various potentials reveals that the Nafion thin film becomes densely packed at the intermediate potentials (0.4 and 0.7 V), indicating an increased ionomer-catalyst interaction due to the positive charges formed at the Pt surface at these potentials. Even for a practical PEMFC single cell, we demonstrate that the potential holding at the intermediate potentials increases ionomer adsorption to the Pt surface and the oxygen transport resistance, negatively impacting its power performance. This work provides fresh insight into the mechanism behind the performance fade in PEMFCs caused by potential-dependent ionomer rearrangement. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Potential-Dependent Ionomer Rearrangement on the Pt Surface in Polymer Electrolyte Membrane Fuel Cells | - |
dc.type | Article | - |
dc.identifier.wosid | 001155531200001 | - |
dc.identifier.scopusid | 2-s2.0-85184344672 | - |
dc.type.rims | ART | - |
dc.citation.volume | 16 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 4637 | - |
dc.citation.endingpage | 4647 | - |
dc.citation.publicationname | ACS APPLIED MATERIALS & INTERFACES | - |
dc.identifier.doi | 10.1021/acsami.3c15827 | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.contributor.nonIdAuthor | Lee, Dong Wook | - |
dc.contributor.nonIdAuthor | Bae, Hanmin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | polymer electrolyte membrane fuel cells | - |
dc.subject.keywordAuthor | ionomers | - |
dc.subject.keywordAuthor | ionomer-catalyst interaction | - |
dc.subject.keywordAuthor | Pt nanoparticlearray electrode | - |
dc.subject.keywordAuthor | rearrangement | - |
dc.subject.keywordAuthor | oxygen transport | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | ATOMIC LAYER DEPOSITION | - |
dc.subject.keywordPlus | THIN-FILM | - |
dc.subject.keywordPlus | TRANSPORT RESISTANCES | - |
dc.subject.keywordPlus | MOLECULAR-DYNAMICS | - |
dc.subject.keywordPlus | CATHODE CATALYST | - |
dc.subject.keywordPlus | HIGH-POWER | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | NAFION | - |
dc.subject.keywordPlus | PROPERTY | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.