Fig. 3. The catalytic performance of the NGM-1/CP electrode for CO2 electrochemical reduction using [Bmim]BF4–H2O binary electrolytes. (A) Current density and CH4 faradaic efficiency at an applied potential of –1.400 V. (B) Time curves of the electrolysis processes at water contents of 0 wt%, 1 wt%, 3 wt%, and 5 wt% (from bottom to top) at –1.400 V. (C) Dependence of the faradaic efficiencies of CH4 on the applied potential at different water contents. (D) Dependence of the partial current densities of CH4 on applied potential at different water contents.
