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High-performance electrolytic oxygen evolution with a seamless armor core-shell FeCoNi oxynitride

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dc.contributor.authorDi, Junen
dc.contributor.authorZhu, Huiyuanen
dc.contributor.authorXia, Jiexiangen
dc.contributor.authorBao, Jianen
dc.contributor.authorZhang, Pengfeien
dc.contributor.authorYang, Shi-Zeen
dc.contributor.authorLi, Huamingen
dc.contributor.authorDai, Shengen
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2019-08-13T12:50:16Zen
dc.date.available2019-08-13T12:50:16Zen
dc.date.issued2019-04-21en
dc.description.abstractHighly active, low-cost, and durable electrocatalysts for the water oxidation reaction are pivotal in energy conversion and storage schemes. Here we report a nitride-core, oxide-shell-armor structured FeCoNi oxynitride as an efficient oxygen evolution electrocatalyst with a homogeneous nitride (Fe0.70Co0.56Ni0.92N1.0O0.06) core and an oxide (Fe0.48Co0.1Ni0.21N0.05O1.0) shell. The catalyst demonstrated excellent activity for the oxygen evolution reaction with a current density of 10 mA cm(-2) at a low overpotential of 0.291 V in alkaline media (1 M KOH), which is superior to the activities of commercial IrO2, RuO2, and Pt/C catalysts and comparable to those of state-of-the-art catalysts (e.g., NiFe-LDH, NiCo2O4, O-NiCoFe-LDH). Density functional theory simulations suggested that the incorporation of multiple metal elements can indeed improve the reaction energetics with a synergistic effect from the core-shell structure. This unique structure of a nitride-core with a oxide-shell presents a new form of multimetallic oxynitride with compelling performance in electrolytic oxygen evolution.en
dc.description.notesPublic domain – authored by a U.S. government employeeen
dc.identifier.doihttps://doi.org/10.1039/c8nr10191den
dc.identifier.eissn2040-3372en
dc.identifier.issn2040-3364en
dc.identifier.issue15en
dc.identifier.pmid30931452en
dc.identifier.urihttp://hdl.handle.net/10919/93042en
dc.identifier.volume11en
dc.language.isoenen
dc.rightsCreative Commons CC0 1.0 Universal Public Domain Dedicationen
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/en
dc.titleHigh-performance electrolytic oxygen evolution with a seamless armor core-shell FeCoNi oxynitrideen
dc.title.serialNanoscaleen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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