NiSe2/FeSe2 nanodendrites: a highly efficient electrocatalyst for oxygen evolution reaction

Abstract

We report the colloidal synthesis of a NiSe₂/FeSe₂ catalyst with branched nanodendrite architecture. The Ni_0.5Fe_0.5Se₂ catalyst exhibits superior catalytic activity towards OER with an overpotential of 235 mV at a current density of 10 mA cm⁻² in an alkaline electrolyte owing to its unique 3D structure and the synergistic effect between NiSe₂ and FeSe₂.