Formation of unexpectedly active Ni–Fe oxygen evolution electrocatalysts by physically mixing Ni and Fe oxyhydroxides
- Görlin, Mikaela
- Chernev, Petko
- Paciok, Paul
- Tai, Cheuk-Wai
- Ferreira de Araújo, Jorge
- Reier, Tobias
- Heggen, Marc
- Dunin-Borkowski, Rafal
- Strasser, Peter
- Dau, Holger
Publication date
January 2018
DOIAbstract
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
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