Formation of unexpectedly active Ni-Fe oxygen evolution electrocatalysts by physically mixing Ni and Fe oxyhydroxides

We present an unusual, yet facile, strategy towards formation of physically mixed Ni-Fe(OxHy) oxygen evolution electrocatalysts. We use in situ X-ray absorption and UV-vis spectroscopy, and high-resolution imaging to demonstrate that physical contact between two inferior Ni(OH)2 and Fe(OOH) catalyst...

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Published in:Chemical communications (Cambridge, England) England), 2019, Vol.55 (6), p.818-821
Main Authors: Görlin, Mikaela, Chernev, Petko, Paciok, Paul, Tai, Cheuk-Wai, Ferreira de Araújo, Jorge, Reier, Tobias, Heggen, Marc, Dunin-Borkowski, Rafal, Strasser, Peter, Dau, Holger
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Chemical evolution
Computer simulation
Computing time
Electrocatalysts
Electrochemical analysis
Image resolution
Iron
Nickel
X ray absorption
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cited_by cdi_FETCH-LOGICAL-c454t-b35d1ea47ed1bd5a95d1fc2a90250f5ec42be4193aff1f7bc3d1dfb65f751ddd3
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creator Görlin, Mikaela
Chernev, Petko
Paciok, Paul
Tai, Cheuk-Wai
Ferreira de Araújo, Jorge
Reier, Tobias
Heggen, Marc
Dunin-Borkowski, Rafal
Strasser, Peter
Dau, Holger
description We present an unusual, yet facile, strategy towards formation of physically mixed Ni-Fe(OxHy) oxygen evolution electrocatalysts. We use in situ X-ray absorption and UV-vis spectroscopy, and high-resolution imaging to demonstrate that physical contact between two inferior Ni(OH)2 and Fe(OOH) catalysts self-assemble into atomically intermixed Ni-Fe catalysts with unexpectedly high activity.
doi_str_mv 10.1039/c8cc06410e
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source Royal Society of Chemistry
subjects Catalysis
Catalysts
Chemical evolution
Computer simulation
Computing time
Electrocatalysts
Electrochemical analysis
Image resolution
Iron
Nickel
X ray absorption
title Formation of unexpectedly active Ni-Fe oxygen evolution electrocatalysts by physically mixing Ni and Fe oxyhydroxides
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