Abstract
Facile incorporation of crystal defects or creating amorphous phase into crystalline functional materials can significantly alter their characteristics leading to boost new technological advances and applications. Herein, nickel hexacyanoferrate (NiHCF) nanoparticles (NPs) and its derivatives synthesized by a simple co-precipitation method, and thermally cured in nitrogen and air atmospheres. The formed cubic nickel-iron framework crystals and their derivatives explored for oxygen evolution reaction (OER) via modification of a glassy carbon electrode (GCE). Expressively, thermal curing of NiHCF in nitrogen and air create variable crystal defects leading to control amorphization at reasonably high temperatures. The NiHCF nanocrystals show overpotentials (η10) of 330 mV for OER at GC/N300 (NiHCF treated at 300 °C in N2) in alkaline medium. Fascinatingly, the results explored the synergistic action for iron/nickel sites and their oxidation states in the NiHCF crystals for OER with superior stability for more than 10 h.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call