首页|Porous Fe5Si3 intermetallic anode for the oxygen evolution reaction in acidic electrolytes
Porous Fe5Si3 intermetallic anode for the oxygen evolution reaction in acidic electrolytes
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NSTL
Elsevier
Here, we show that a reactive synthesis method of mixed elemental powders can be used to synthesize a porous electrode consisting of an intermetallic Fe5Si3 that exhibits catalytic activity towards oxygen evolution reaction (OER) in acidic solutions, which is capable of delivering 10 mA cm(-2) at an overpotential of 0.73 V and a small Tafel slope of similar to 381.8 mV dec(-1). The amorphous silica formed in the anode surface during the electrochemical process is multifunctional, as it protects the electrode substrate from corrosion and acts as electrocatalysts for OER. Remarkably, the Si-based intermetallics can be generalized to include other OER catalytic elements (Mn, Fe, Co), including Mn-Si and Co-Si intermetallics. (C) 2021 Elsevier Inc. All rights reserved.
NSTL
Elsevier
