Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154363
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dc.contributor.authorCheng, Weirenen_US
dc.contributor.authorXi, Shiboen_US
dc.contributor.authorWu, Zhi-Pengen_US
dc.contributor.authorLuan, Deyanen_US
dc.contributor.authorLou, David Xiong Wenen_US
dc.date.accessioned2022-05-25T02:24:17Z-
dc.date.available2022-05-25T02:24:17Z-
dc.date.issued2021-
dc.identifier.citationCheng, W., Xi, S., Wu, Z., Luan, D. & Lou, D. X. W. (2021). In situ activation of Br-confined Ni-based metal-organic framework hollow prisms toward efficient electrochemical oxygen evolution. Science Advances, 7(46), eabk0919-. https://dx.doi.org/10.1126/sciadv.abk0919en_US
dc.identifier.issn2375-2548en_US
dc.identifier.urihttps://hdl.handle.net/10356/154363-
dc.description.abstractFundamental insights into the structural evolution of oxygen electrocatalysts under operating conditions are of substantial importance for designing efficient catalysts. Here, on the basis of operando x-ray absorption fine structure spectroscopy, we probe the in situ activation of Br-confined conductive Ni-based metal-organic framework (Br-Ni-MOF) hollow prisms toward an active oxygen electrocatalyst during the oxygen evolution reaction (OER) process. The successive structural transformations from pristine Br-Ni-MOF to a β-Ni(OH)2 analog then subsequently to a γ-NiOOH phase during OER are observed. This post-formed γ-NiOOH analog manifests high OER performance with a superior overpotential of 306 mV at 10 mA cm−2 and a high turnover frequency value of 0.051 s−1 at an overpotential of 300 mV, making Br-Ni-MOF one of the most active oxygen electrocatalysts reported. Density functional theory calculations reveal that the strong electronic coupling between Br and Ni atoms accelerates the generation of the key *O intermediate toward fast OER kinetics.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationMOE2017-T2-2-003en_US
dc.relation.ispartofScience Advancesen_US
dc.rights© 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).en_US
dc.subjectEngineering::Chemical engineeringen_US
dc.titleIn situ activation of Br-confined Ni-based metal-organic framework hollow prisms toward efficient electrochemical oxygen evolutionen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.identifier.doi10.1126/sciadv.abk0919-
dc.description.versionPublished versionen_US
dc.identifier.pmid34757786-
dc.identifier.scopus2-s2.0-85118938137-
dc.identifier.issue46en_US
dc.identifier.volume7en_US
dc.identifier.spageeabk0919en_US
dc.subject.keywordsEnergy-Storageen_US
dc.subject.keywordsElectrocatalystsen_US
dc.description.acknowledgementX.W.L. acknowledges funding support from the Ministry of Education of Singapore through the Academic Research Fund (AcRF) Tier-2 funding (MOE2017-T2-2-003).en_US
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