MOF-Derived CoSe2@NiFeOOH Arrays for Efficient Oxygen Evolution Reaction

Water electrolysis is a compelling method for the production of environmentally friendly hydrogen, minimizing carbon emissions. The water heavily relies on an effective and steady oxygen evolution reaction (OER) taking place at anode. Herein, we introduce highly promising catalyst OER called CoSe2@NiFeOOH arrays, which are supported nickel foam. This catalyst, referred to as CoSe2@NiFeOOH/NF, fabricated through two-step process involving selenidation Co-based porous metal organic framework subsequent electrochemical deposition CoSe2@NiFeOOH/NF demonstrates outstanding activity in alkaline electrolyte. It exhibits low overpotential (η) 254 mV 100 mA cm−2, small Tafel slope 73 dec−1, excellent high stability. good performance can be attributed combination conductivity inner layer synergistic effect between CoSe2 NiFeOOH. study offers fabrication efficient catalysts OER.