Mn-doped CoSe nanosheets as high-efficiency catalysts for the oxygen evolution reaction

In this work, we introduce for the first time an aqueous solution method followed by a selenization step to prepare Mn-doped CoSe 2 nanosheets supported on nickel foam for the oxygen evolution reaction. These findings provide us highly efficient electrocatalysts instead of noble metal catalysts for the oxygen evolution reaction. This work establishes Mn-CoSe 2 nanosheets as promising OER electrocatalysts, but also opens an exciting new avenue to enhance their electrocatalytic activity by heteroatom doping.