Dendritic gold-supported iridium/iridium oxide ultra-low loading electrodes for high-performance proton exchange membrane water electrolyzer
DC Field | Value | Language |
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dc.contributor.author | Kim, H. | - |
dc.contributor.author | Kim, J. | - |
dc.contributor.author | Kim, J. | - |
dc.contributor.author | Han, G.H. | - |
dc.contributor.author | Guo, W. | - |
dc.contributor.author | Hong, S. | - |
dc.contributor.author | Park, H.S. | - |
dc.contributor.author | Jang, H.W. | - |
dc.contributor.author | Kim, S.Y. | - |
dc.contributor.author | Ahn, Sang Hyun | - |
dc.date.available | 2020-12-17T06:40:18Z | - |
dc.date.issued | 2021-04 | - |
dc.identifier.issn | 0926-3373 | - |
dc.identifier.issn | 1873-3883 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/43587 | - |
dc.description.abstract | The insufficient performance of current oxygen evolution reaction (OER) electrodes limits the realization of clean hydrogen production via proton exchange membrane water electrolyzers (PEMWEs). Herein, an innovative electrode design with an ultra-low Ir loading is proposed to achieve high catalytic OER performance, catalyst utilization, conductivity, and mass transfer. The microgram-scale loading of Ir on a highly roughened dendritic Au support is controlled by the number of Ir deposition pulses and, together with Ir coverage, which significantly affect the Ir electronic structure and intrinsic OER activity. Further control of the Ir electronic structure is achieved by forming Ir oxides via electrochemical and thermal oxidation to adjust the activity–stability balance. A PEMWE employing the fabricated electrode demonstrates substantially low ohmic and mass-transfer losses, especially in the higher-current-density region. As a result, superior cell performance with extremely high mass activity is achieved, significantly exceeding the mass activities of state-of-the-art Ir-based anodes. © 2020 Elsevier B.V. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Dendritic gold-supported iridium/iridium oxide ultra-low loading electrodes for high-performance proton exchange membrane water electrolyzer | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.apcatb.2020.119596 | - |
dc.identifier.bibliographicCitation | Applied Catalysis B: Environmental, v.283 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000600016300005 | - |
dc.identifier.scopusid | 2-s2.0-85092504888 | - |
dc.citation.title | Applied Catalysis B: Environmental | - |
dc.citation.volume | 283 | - |
dc.type.docType | Article | - |
dc.publisher.location | 네델란드 | - |
dc.subject.keywordAuthor | Oxygen evolution reaction | - |
dc.subject.keywordAuthor | Proton exchange membrane water electrolyzer | - |
dc.subject.keywordAuthor | Self-terminated electrodeposition | - |
dc.subject.keywordAuthor | Ultra-low Ir loading electrode | - |
dc.subject.keywordPlus | Electrodes | - |
dc.subject.keywordPlus | Electrolytic cells | - |
dc.subject.keywordPlus | Electronic structure | - |
dc.subject.keywordPlus | Gold compounds | - |
dc.subject.keywordPlus | Hydrogen production | - |
dc.subject.keywordPlus | Mass transfer | - |
dc.subject.keywordPlus | Oxygen evolution reaction | - |
dc.subject.keywordPlus | Thermooxidation | - |
dc.subject.keywordPlus | Catalyst utilization | - |
dc.subject.keywordPlus | Cell performance | - |
dc.subject.keywordPlus | Electrode design | - |
dc.subject.keywordPlus | Oxygen evolution reaction (oer) | - |
dc.subject.keywordPlus | Proton exchange membranes | - |
dc.subject.keywordPlus | State of the art | - |
dc.subject.keywordPlus | Thermal oxidation | - |
dc.subject.keywordPlus | Water electrolyzer | - |
dc.subject.keywordPlus | Iridium compounds | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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