DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, L. | ko |
dc.contributor.author | Sun, H. | ko |
dc.contributor.author | Hu, Z. | ko |
dc.contributor.author | Zhou, J. | ko |
dc.contributor.author | Huang, Y.-C. | ko |
dc.contributor.author | Huang, H. | ko |
dc.contributor.author | Song, S. | ko |
dc.contributor.author | Pao, C.-W. | ko |
dc.contributor.author | Chang, Y.-C. | ko |
dc.contributor.author | Komarek, A.C. | ko |
dc.contributor.author | Lin, H.-J. | ko |
dc.contributor.author | Chen, C.-T. | ko |
dc.contributor.author | Dong, C.-L. | ko |
dc.contributor.author | Wang, J.-Q. | ko |
dc.contributor.author | Zhang, L. | ko |
dc.date.accessioned | 2021-12-23T06:43:15Z | - |
dc.date.available | 2021-12-23T06:43:15Z | - |
dc.date.created | 2021-12-23 | - |
dc.date.created | 2021-12-23 | - |
dc.date.created | 2021-12-23 | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.31, no.43 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/290994 | - |
dc.description.abstract | Identifying real active sites and understanding the mechanism of oxygen evolution reaction (OER) are still a big challenge today for developing efficient electrochemical catalysts in renewable energy technologies. Here, using a combined in situ/operando experiments and theory, the catalytic mechanism of the ordered OER active Co and Ir ions in Sr2CoIrO6−δ is studied, which exhibits an unprecedented low overpotential 210 mV to achieve 10 mA cm–2, ranking the highest performance among perovskite-based solid-state catalysts. Operando X-ray absorption spectroscopies as a function of applied voltage indicates that Ir4+ ion is gradually converted into extremely high-valence Ir5+/6+, while the part of Co3+ ion is transferred into Co4+ under OER process. Density functional theory calculations explicitly reveal the order Co-O-Ir network as an origin of ultrahigh OER activity. The work opens a promising path to overcome the sluggish kinetics of OER bottleneck for water splitting via proper arrangements of the multi-active sites in catalyst. © 2021 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | In Situ/Operando Capturing Unusual Ir6+ Facilitating Ultrafast Electrocatalytic Water Oxidation | - |
dc.type | Article | - |
dc.identifier.wosid | 000680519300001 | - |
dc.identifier.scopusid | 2-s2.0-85111697563 | - |
dc.type.rims | ART | - |
dc.citation.volume | 31 | - |
dc.citation.issue | 43 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.202104746 | - |
dc.contributor.localauthor | Sun, H. | - |
dc.contributor.nonIdAuthor | Li, L. | - |
dc.contributor.nonIdAuthor | Hu, Z. | - |
dc.contributor.nonIdAuthor | Zhou, J. | - |
dc.contributor.nonIdAuthor | Huang, Y.-C. | - |
dc.contributor.nonIdAuthor | Huang, H. | - |
dc.contributor.nonIdAuthor | Song, S. | - |
dc.contributor.nonIdAuthor | Pao, C.-W. | - |
dc.contributor.nonIdAuthor | Chang, Y.-C. | - |
dc.contributor.nonIdAuthor | Komarek, A.C. | - |
dc.contributor.nonIdAuthor | Lin, H.-J. | - |
dc.contributor.nonIdAuthor | Chen, C.-T. | - |
dc.contributor.nonIdAuthor | Dong, C.-L. | - |
dc.contributor.nonIdAuthor | Wang, J.-Q. | - |
dc.contributor.nonIdAuthor | Zhang, L. | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | operando X-ray absorption spectroscopy | - |
dc.subject.keywordAuthor | oxygen evolution reaction | - |
dc.subject.keywordAuthor | synergistic effects, ordered multi-active sites, high-valence elements | - |
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