Release time:2023-10-19  Hits:

• Key Words:HYDROGEN EVOLUTION REACTION; PRUSSIAN BLUE ANALOGS; HIGHLY EFFICIENT; FACILE SYNTHESIS; DURABLE ELECTROCATALYST; ANODE MATERIAL; NI FOAM; COMPOSITES; ALLOY
• Abstract:It is very important to design and prepare low-cost and high-efficiency electrocatalysts for water splitting in alkaline solution. In this study, Ni-Fe-P and Ni-Fe-P-FeMnO3 electrocatalysts are developed using a facile electrodeposition method. Transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) characterization studies show that FeMnO3 particles are successfully composited into the Ni-Fe-P amorphous matrix, and multi-stage nanostructures are obtained which enable the exposure of more active sites for the hydrogen evolution reaction. The Ni-Fe-P electrocatalyst prepared at a deposition current density of 150 mA cm(-2) exhibits remarkable hydrogen evolution reaction catalytic activity, and only requires 39.7 mV overpotential at 10 mA cm(-2) current density. Compared with the Ni-Fe-P electrode, the Ni-Fe-P-FeMnO3 electrode shows more outstanding electrocatalytic properties requiring only 13.5 mV overpotential at 10 mA cm(-2) current density. The fabricated Ni-Fe-P-FeMnO3 electrode is able to sustain a current density of 10 mA cm(-2) with negligible increase in overpotential in 24 h which shows remarkable electrochemical stability.
• Volume:9
• Issue:37
• Translation or Not:no