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Electromodified NiF...
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Loos, StefanFree Univ Berlin, Inst Expt Phys, Arnimallee 14, D-014195 Berlin, Germany;Fraunhofer Inst Mfg Technol & Adv Mat IFAM, Winterbergstr 28, D-01277 Dresden, Germany
(författare)
Electromodified NiFe Alloys as Electrocatalysts for Water Oxidation : Mechanistic Implications of Time-Resolved UV/Vis Tracking of Oxidation State Changes
- Artikel/kapitelEngelska2019
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2019-01-29
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Wiley-VCH Verlagsgesellschaft,2019
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LIBRIS-ID:oai:DiVA.org:uu-389827
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-389827URI
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https://doi.org/10.1002/cssc.201802737DOI
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Språk:engelska
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Sammanfattning på:engelska
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Facile electromodification of metallic NiFe alloys leads to a series of NiFe oxyhydroxide surface films with excellent electrocatalytic performance in alkaline water oxidation. During cyclic voltammetry and after sudden potential jumps between noncatalytic and catalytic potentials, Ni oxidation/reduction was tracked with millisecond time resolution by a UV/Vis reflectance signal. Optimal catalysis at intermediate Ni/Fe ratios is explained by two opposing trends for increasing Fe content: a)pronounced slowdown of the Ni2+/Ni3+ oxidation step and b)increased reactivity of the most oxidized catalyst state detectable at catalytic potentials. This state may involve an equilibrium between Ni4+ ions and Ni2+ ions with neighboring ligand holes, possibly in the form of bound peroxides.
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Zaharieva, IvelinaFree Univ Berlin, Inst Expt Phys, Arnimallee 14, D-014195 Berlin, Germany
(författare)
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Chernev, PetkoUppsala universitet,Molekylär biomimetik,Free Univ Berlin, Inst Expt Phys, Arnimallee 14, D-014195 Berlin, Germany(Swepub:uu)petch350
(författare)
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Lissner, AndreasTech Univ Bergakad Freiberg, Inst Phys Chem, Leipziger Str 29, D-09599 Freiberg, Germany
(författare)
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Dau, HolgerFree Univ Berlin, Inst Expt Phys, Arnimallee 14, D-014195 Berlin, Germany
(författare)
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Free Univ Berlin, Inst Expt Phys, Arnimallee 14, D-014195 Berlin, Germany;Fraunhofer Inst Mfg Technol & Adv Mat IFAM, Winterbergstr 28, D-01277 Dresden, GermanyFree Univ Berlin, Inst Expt Phys, Arnimallee 14, D-014195 Berlin, Germany
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:ChemSusChem: Wiley-VCH Verlagsgesellschaft12:9, s. 1966-19761864-56311864-564X
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