Fig. 7. (a) Illustrated set-up of an overall water splitting cell with Co3Mo/Cu and EO Co3Mo/Cu electrodes as cathode and anode. (b) LSV curves for overall water splitting of Co3Mo/Cu‖EO Co3Mo/Cu and references in a 1 M KOH aqueous electrolyte and 0.5 M NaCl (Inset: comparison of the received current density at a cell potential of 1.65 V). (c) Long term measurement of Co3Mo/Cu‖EO Co3Mo/Cu at 1.65 V in comparison to Pt/C/Cu‖Ir/C/Cu with inset depicting SEM images of Co3Mo/Cu cathode and EO Co3Mo/Cu anode after prolonged electrocatalysis (scale bar = 400 nm). (d) The activity comparison of the cell potential of Co3Mo/Cu in alkaline media at a current density of 100 mA cm−2 with various reported. Reprinted with permission from ref. 113, copyright 2020, Nature Publishing Group.
