Fig. 1: Tafel curves for C2+ product formation at different electrolyte pH.
From: Electrokinetic and in situ spectroscopic investigations of CO electrochemical reduction on copper

The logarithms of partial current densities for ethylene, acetate, ethanol, and n-propanol are plotted in SHE scale (a) and RHE scale (b), respectively. The error bars represent SD from at least three independent measurements.