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Intermetallic Fe6ge5 Formation And Decay Of A Core-Shell Structure During The Oxygen Evolution Reaction

J Niklas Hausmann,Roman A Khalaniya,Chittaranjan Das,Ina Remy-Speckmann,Stefan Berendts,Andrei V Shevelkov,Matthias Driess,Prashanth W Menezes

CHEMICAL COMMUNICATIONS（2021）

Cited 23|Views6
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Abstract
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.
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intermetallic fe<sub>6</sub>ge<sub>5</sub>,oxygen,core–shell structure
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