A MnCo2S4 nanowire array as an earth-abundant electrocatalyst for an efficient oxygen evolution reaction under alkaline conditions

Abstract

In this communication, we demonstrate the development of a MnCo₂S₄ nanowire array directly grown on Ti mesh (MnCo₂S₄ NA/TM) as an electrocatalyst for the oxygen evolution reaction in 1.0 M KOH which only needs an overpotential of 325 mV to drive 50 mA cm⁻². At an overpotential of 500 mV, this electrocatalyst achieves a high turnover frequency of 0.81 mol O₂ per s.