Metal–Organic Framework-Derived NiS/Fe₃O₄ Heterostructure-Decorated Carbon Nanotubes as Highly Efficient and Durable Electrocatalysts for Oxygen Evolution Reaction

Because of the sluggish oxygen evolution kinetics, it is extremely important but still challenging to develop low-cost, efficient, and stable electrocatalysts for oxygen evolution reaction (OER) to enhance the efficiency of water electrolysis. Herein, for the first time, we present a novel heterostructure catalyst, constructed by ultrafine NiS/Fe3O4 heterostructural nanoparticles decorated on a carbon nanotube (CNT) matrix (NiS/Fe3O4 HNPs@CNT),...