The system stability performance of ECO2R to C2H4 on SS-Cu in a pure-H2O-fed APMA-MEA cell stack containing six APMA-MEA cells at a constant current of 10 A. Each cathode electrode area was 30 cm2, and the reaction temperature was 60 C. Pt/Ti was used as the anode electrode, and the flow rate of the CO2 inlet was 30 sccm for the single cell or cell stack. AEM and PEM membranes were used as the electrogenerated OH and H+/H3O+ ion exchange membranes, respectively. Values are means, and error bars indicate the s.d. (n = 3 replicates).
