Fig. 3
From: Efficient solar-driven electrocatalytic CO2 reduction in a redox-medium-assisted system
Oxygen evolution and CO2 reduction. a The j–V curve of electrochemical oxygen evolving in the two-electrode Zn//NiFe hydroxide system from linear sweep voltammetry. The scan rate was 5 mV∙s−1. b, c Photographs of hydrogen evolution on a Zn plate at a voltage of 2.0 and 2.1 V, respectively. d The chronovoltammetry profile, FECO and concentration of CO production in the two-electrode Zn//nano-Au system at a current density of 5 mA∙cm−2. e FECO (red bars) and concentration of CO production (blue bars) at different current densities of 2, 5 and 8 mA∙cm−2
