The Au on Ni foam and Au-Pt-Bi-coated electrodes that were used for CO2RR|BPM|GEOR were compared to as-prepared samples using EDX. We observed a loss of intensity in the EDX features Au-Pt-Bi electrodes show a corresponding to these elements after 24 h of GEOR electrocatalysis (Figure ). This loss of electrocatalytic material is likely a factor in cell potential increase over time. Au was present in similar quantities before and after the 24 h CO2RR, on the Au-coated Ni foam electrocatalyst as seen in Figure . This was expected as metallic Au is thermodynamically stable in the reductive conditions of cathodic operation. Load-line analyses predicted that the operating cell potentials at -10.0 mA cm -2 cathodic current were Vop = -2.10 V for a CO2RR|selemion|bOER electrolysis cell, Vop = -1.73 V + VBPM = -2.56 V for a CO2RR|BPM|OER electrolysis cell, and Vop = -0.67 V + VBPM = -1.50 V for a CO2RR|BPM|GEOR electrolysis cell. The measured operating cell potentials for > 15 h CP electrolysis experiments are shown in Figure . The GEOR-assisted cell maintained a steady operating potential of -1.7 V, which is slightly higher than predicted by the LLA, though this was still roughly 1V lower than the cell when the anode side performed OER. Product analysis for the CO2RR showed that CO and H2 were the main cathodic products in all cases, independent of the anode reaction. Faradaic efficiencies for products during these CO2RR experiments are shown in Table . Additionally, no change in the pH of the catholyte was observed over the entire reaction, as would be expected from a buffered electrolyte. shows a CP measurement of a Pt-coated Ni foam anode, which can sustain -10.0 mA cm -2 during GEOR in the alkaline conditions used for these experiments. However, after 2.5 h, we observed an abrupt increase in the cell potential, indicating the oxidation of the Pt interface as observed elsewhere. While GEOR may continue at the oxidized Pt interface, it occurs at a more positive absolute potential than on the metallic Pt electrocatalyst. This demonstrates the important role that the additional metals (Au and Bi) play in the durability of the multi-metal electrocatalyst used here for GEOR.