Construction of Amorphous/Crystalline Fe doped CoSe for Effective Electrocatalytic Oxygen Evolution

Herein, amorphous/crystalline Fe-doped CoSe was synthesized (Fe-CoSe/NF). It exhibited high OER performance of 269 mV@50 mA cm −2 and 280 mV@100 mA cm −2 . The Tafel slope is 38 mV dec −1 and can maintain high activity stably for more than 135 h.