Fig. 2: CO electrolyzer performance with different diaphragms and AEMs.
From: Diaphragm-based carbon monoxide electrolyzers for multicarbon production under alkaline conditions
a Faradaic efficiency for all detectable products and corresponding cell voltages measured using different diaphragms and AEMs with a constant current density of 200 mA cm–2. b Comparison of CO electroreduction performance with different diaphragms among different current density. c Volume percentage of hydrogen crossover from the anode to cathode as a function of current density for different diaphragms. There is no detectable hydrogen crossover in the case of Zirfon 500 + . d Bubble point comparison of different diaphragms. The 5 cm2 zero-gap diaphragm-based CO electrolyzer was operated with a 1 M KOH electrolyte at 3 mL min⁻1, a 40–60 nm Cu nanoparticle cathode, a NiFeOx/Ni foam anode, with CO fed at a rate of 30 sccm. Error bars in (a) and (b) represent the standard deviation from three independent measurements. Source data are provided as a Source Data file.
