Loading…
Intermetallic Fe6Ge5 formation and decay of a core–shell structure during the oxygen evolution reaction
Intermetallic Fe6Ge5 formation and decay of a core–shell structure during the oxygen evolution reaction
Hausmann, J. Niklas; Khalaniya, Roman A.; Das, Chittaranjan; Remy-Speckmann, Ina; Berendts, Stefan; Shevelkov, Andrei V.; Driess, Matthias; Menezes, Prashanth W.
FG Metallorganische Chemie und Anorganische Materialien
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.