Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction
DC Field | Value | Language |
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dc.contributor.author | Kwon, T. | - |
dc.contributor.author | Jun, M. | - |
dc.contributor.author | Bang, G.J. | - |
dc.contributor.author | Yang, H. | - |
dc.contributor.author | Joo, J. | - |
dc.contributor.author | Kim, T. | - |
dc.contributor.author | Kim, J. | - |
dc.contributor.author | Kim, J.M. | - |
dc.contributor.author | Baik, H. | - |
dc.contributor.author | Jung, Y. | - |
dc.contributor.author | Kim, J.Y. | - |
dc.contributor.author | Lee, K. | - |
dc.date.accessioned | 2021-08-31T19:26:35Z | - |
dc.date.available | 2021-08-31T19:26:35Z | - |
dc.date.created | 2021-06-17 | - |
dc.date.issued | 2020-12 | - |
dc.identifier.issn | 2666-3864 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/60781 | - |
dc.description.abstract | Kwon et al. demonstrate that the structural evolution of Ir-oxide nanocatalysts during OER depends on the crystallinity of the precursor Ir-alloy nanostructures. The loosely knit IrO2@amorphous-IrOx structure, derived from the polycrystalline ternary Ir-alloy nanocage, exhibits high OER activity as well as long-term stability. © 2020 The Author(s)The dissolution of Ir-oxide-based catalysts remains a roadblock in the development of durable electrocatalytic oxygen evolution reaction (OER) catalysts. Both the activity and stability of Ir-based catalysts are critically dependent on the ratio of stable rutile IrO2 and unstable amorphous Ir oxide (a-IrOx), as well as the spatial relationship between them. Here, we report that the domain size in hollow ternary Ir alloy nanocages can be fine-tuned by the introduction of dopant elements during the growth of parent core-shell nanoparticles, Cu@CuIr. After electrochemical oxidation under OER conditions, Ir alloy nanocages possessing multiple crystallites in their structure are transformed into hollow aggregates of loosely knit crystalline IrO2@a-IrOx domains, whereas single-crystalline Ir alloy nanocages are transformed to hollow Ir oxides with a random mixture of a-IrOx and IrO2. The loosely knit IrO2@a-IrOx structure achieves high OER activity and long-term stability, which is not feasible with the random mixture of a-IrOx and IrO2. © 2020 The Author(s) | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | Cell Press | - |
dc.title | Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, K. | - |
dc.identifier.doi | 10.1016/j.xcrp.2020.100260 | - |
dc.identifier.scopusid | 2-s2.0-85100613817 | - |
dc.identifier.wosid | 000658758300004 | - |
dc.identifier.bibliographicCitation | Cell Reports Physical Science, v.1, no.12 | - |
dc.relation.isPartOf | Cell Reports Physical Science | - |
dc.citation.title | Cell Reports Physical Science | - |
dc.citation.volume | 1 | - |
dc.citation.number | 12 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.subject.keywordPlus | X-RAY-ABSORPTION | - |
dc.subject.keywordPlus | OXIDE ELECTROCATALYSTS | - |
dc.subject.keywordPlus | STRUCTURAL FEATURES | - |
dc.subject.keywordPlus | WATER OXIDATION | - |
dc.subject.keywordPlus | IR | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | NUCLEATION | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | 1ST-PRINCIPLES | - |
dc.subject.keywordAuthor | crystallinity | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | electrocatalyst | - |
dc.subject.keywordAuthor | grain size | - |
dc.subject.keywordAuthor | iridium-based alloy | - |
dc.subject.keywordAuthor | nanocage | - |
dc.subject.keywordAuthor | oxygen evolution reaction | - |
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