A Zn-doped Ni 3 S 2 nanosheet array as a high-performance electrochemical water oxidation catalyst in alkaline solution

A Zn-doped Ni 3 S 2 nanosheet array on Ni foam (Zn-Ni 3 S 2 /NF) acts as a high-performance and durable electrocatalyst for the oxygen evolution reaction in 1.0 M KOH, driving a catalytic current density of 100 mA cm −2 at an overpotential of 330 mV, 90 mV less than that for Ni 3 S 2 /NF.