Effect of Metal Layer Support Structures on the Catalytic Activity of NiFe(oxy)hydroxide (LDH) for the OER in Alkaline Media

dc.contributor.authorGort, Christopher
dc.contributor.authorBuchheister, Paul W.
dc.contributor.authorKlingenhof, Malte
dc.contributor.authorPaul, Stephen D.
dc.contributor.authorDionigi, Fabio
dc.contributor.authorvan de Krol, Roel
dc.contributor.authorKramm, Ulrike I.
dc.contributor.authorJaegermann, Wolfram
dc.contributor.authorHofmann, Jan P.
dc.contributor.authorStrasser, Peter
dc.contributor.authorKaiser, Bernhard
dc.date.accessioned2023-08-11T12:18:48Z
dc.date.available2023-08-11T12:18:48Z
dc.date.issued2023-03-31
dc.date.updated2023-07-19T08:18:06Z
dc.description.abstractPhotoelectrochemical (PEC) cells promise to combine the benefits of photovoltaics and electrolysis in one device. They consist of a photoabsorber functionalized with an electrocatalyst to harvest faradaic currents under reduced overpotentials. To protect the absorber from the harsh reaction conditions, a protective buffer layer (e. g. TiO2) is added between absorber and catalyst. In this work, we investigate the influence of the catalyst support systems Ti/TiOx and Ti/TiOx/M (M=Au, Ni, Fe) on the overall activity and stability of nickel and iron mixed layered double hydroxides for the alkaline oxygen evolution reaction (OER). The catalyst performance on the bare Ti/TiOx substrate is very poor, but the incorporation of a metallic interlayer leads to two orders of magnitude higher OER current densities. While a similar effect has been observed for M=gold supported systems, we show that the same effect can be achieved with M=nickel/iron, already contained in the catalyst. This proprietary metal interlayer promises a cheap OER performance increase for PEC cells protected with titania buffer layers. Detailed XPS show an improved transformation of the starting catalyst material into the highly active (oxy)hydroxide phase, when using metallic interlayers. From these experiments a pure conductivity enhancement was excluded as possible explanation, but instead an additional change in the local atomic and electronic structure at the metal-support and metal-catalyst interfaces is proposed.en
dc.identifier.eissn1867-3899
dc.identifier.issn1867-3880
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/19561
dc.identifier.urihttps://doi.org/10.14279/depositonce-18360
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
dc.subject.otherelectrocatalysis
dc.subject.othernickel iron layered double hydroxide
dc.subject.otheroxygen evolution reaction
dc.subject.otherphotoelectrochemistry
dc.subject.otherX-ray photoelectron spectroscopy
dc.titleEffect of Metal Layer Support Structures on the Catalytic Activity of NiFe(oxy)hydroxide (LDH) for the OER in Alkaline Mediaen
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumbere202201670
dcterms.bibliographicCitation.doi10.1002/cctc.202201670
dcterms.bibliographicCitation.issue8
dcterms.bibliographicCitation.journaltitleChemCatChemen
dcterms.bibliographicCitation.originalpublishernameWiley-VCH
dcterms.bibliographicCitation.originalpublisherplaceWeinheim
dcterms.bibliographicCitation.pageend
dcterms.bibliographicCitation.pagestart
dcterms.bibliographicCitation.volume15
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Technische Chemie / Elektrokatalyse - Materialien
tub.publisher.universityorinstitutionTechnische Universität Berlin

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