Ultrafine monodisperse NiS/NiS2 heteronanoparticles in situ grown on N-doped graphene nanosheets with enhanced electrocatalytic activity for hydrogen evolution reaction

The exploration of highly active and stable nonprecious electrocatalysts for the hydrogen evolution reaction (HER) is of great significance for the advancement of diverse sustainable energy storage and conversion systems. Herein, we demonstrate a facile one-pot hydrothermal synthesis of ultrafine and monodisperse NiS/NiS2 heteronanoparticles (ca. 3.2 nm) uniformly in situ grown on N-doped reduced graphene oxide nanosheets (denoted as...