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dc.contributor.authorWang, Miaoen_US
dc.contributor.authorDong, Chung-Lien_US
dc.contributor.authorHuang, Yu-Chengen_US
dc.contributor.authorLi, Yanruien_US
dc.contributor.authorShen, Shaohuaen_US
dc.date.accessioned2019-04-02T05:58:37Z-
dc.date.available2019-04-02T05:58:37Z-
dc.date.issued2018-08-29en_US
dc.identifier.issn1613-6810en_US
dc.identifier.urihttp://dx.doi.org/10.1002/smll.201801756en_US
dc.identifier.urihttp://hdl.handle.net/11536/148062-
dc.description.abstractNon-noble metal catalysts for high-active electrocatalytic oxygen evolution reaction (OER) are essential in large-scale application for water splitting. Herein, tricomponent metal phosphides with hollow structures are synthesized from cobalt-contained metal organic frameworks (MOFs), i.e., ZIF-67, by tailoring the feeding ratios of Ni and Fe, followed by a high-temperature reduction and a subsequent phosphidation process. Excellent OER activity and long-time stability are achieved in 1 M NaOH aqueous solution, with an overpotential of 329 mV at 10 mA cm(-2) and Tafel slope of 48.2 mV dec(-1), even superior to the noble metal-based catalyst. It is evidenced that the formed (oxyhydr)oxide/phosphate species by in situ electrochemical surface oxidation are responsible for active OER. Accordingly, the simultaneous introduction of external Ni and Fe elements significantly influences the electronic structures of the parent metal phosphides, leading to the in situ electrochemical formation of surface active layer with decreased OER activation energy for greatly improved water oxidation performance. This electronic structure tuning strategy by introducing multicomponent metals demonstrates a versatile method to use MOFs as precursors for synthesizing high-efficient water splitting electrocatalysts.en_US
dc.language.isoen_USen_US
dc.subjectelectronic structure tuningen_US
dc.subjectmetal organic frameworksen_US
dc.subjectoxygen evolution reactionen_US
dc.subjectsurface transformationen_US
dc.subjecttransition-metal phosphidesen_US
dc.titleElectronic Structure Evolution in Tricomponent Metal Phosphides with Reduced Activation Energy for Efficient Electrocatalytic Oxygen Evolutionen_US
dc.typeArticleen_US
dc.identifier.doi10.1002/smll.201801756en_US
dc.identifier.journalSMALLen_US
dc.citation.volume14en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000443012700010en_US
dc.citation.woscount0en_US
Appears in Collections:Articles