Intermetallic Fe 6 Ge 5 formation and decay of a core-shell structure during the oxygen evolution reaction

Herein, we report on intermetallic iron germanide (Fe6Ge5) as a novel oxygen evolution reaction (OER) precatalyst with a Tafel slope of 32 mV dec-1 and an overpotential of 272 mV at 100 mA cm-2 in alkaline media. Furthermore, we uncover the in situ formation of a core-shell like structure that slowl...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-03, Vol.57 (17), p.2184-2187
Main Authors: Hausmann, J Niklas, Khalaniya, Roman A, Das, Chittaranjan, Remy-Speckmann, Ina, Berendts, Stefan, Shevelkov, Andrei V, Driess, Matthias, Menezes, Prashanth W
Format: Article
Language:English
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Summary:Herein, we report on intermetallic iron germanide (Fe6Ge5) as a novel oxygen evolution reaction (OER) precatalyst with a Tafel slope of 32 mV dec-1 and an overpotential of 272 mV at 100 mA cm-2 in alkaline media. Furthermore, we uncover the in situ formation of a core-shell like structure that slowly collapses under OER conditions.
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc08035g