Fabrication of surface etched NiFe2O4-NiSe2 nanocomposite as an efficient electrocatalyst for oxygen evolution reaction

The NiFe2O4-NiSe2 nanocomposite with selenite etching at the surface demonstrates efficient oxygen evolution electrocatalysis with a low overpotential of 340 mV to achieve a high current density of 100 mA cm−2. This nanocomposite also exhibits faster charge transfer kinetics with a low Tafel slope of 52.1 mV dec-1.