Electro-Activated Ni3s2-Nio Modified by Amorphous Nifeox as Superior Electrocatalyst for Oxygen Evolution Reaction

Published: Jan. 1, 2025

The electrochemical oxygen evolution reaction (OER) as a rapid control step in water splitting for hydrogen production can utilise FeNi-based catalysts to reduce the overpotential. In considering disparate effects of crystalline and amorphous phases on stability activity catalyst, amorphous/crystalline heterojunctions were formed by metal oxides employed catalysts. this work, NiFeOx-modified Ni3S2-NiO/NF* heterojunction nanosheets (NiFe@Ni3S2-NiO/NF*) with three-dimensional structural configuration successfully prepared through two-stage process involving hydrothermal electrical treatments. NiFe@Ni3S2-NiO/NF*, electrically activated in-stiu exhibit stable crystal structure regular morphology, which enhances catalytic facilitates exposure active sites. Meanwhile, nickel-iron modified electrodeposition methods robust bond substrate, coupled flexibility, low contact resistance high electrocatalytic activity. NiFe@Ni3S2-NiO/NF* electrode exhibits remarkable towards OER alkaline media, particularly at potential 1.49 V reach large current density 50 mA cm-2, along excellent long-term stability. These findings are significant importance providing novel insights design construction oxide

Language: Английский

Electro-activated Ni3S2-NiO Modified by Amorphous NiFeOx as Superior Electrocatalyst for Oxygen Evolution Reaction

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180453 - 180453

Published: April 1, 2025

Language: Английский