The same complex was dropcast onto a carbon cloth GDE and applied in a simplified flow cell as a heterogenized CO2R catalyst using a KHCO3 electrolyte (Fig. ). The same Co(III/II) and Co(II/I) waves were observed at 0.8 and -0.2 V vs. RHE, alongside a catalytic current more negative than -0.2 V when CO2 was flown through the cell (Fig. ). Electrochemical impedance spectroscopy (EIS) testing indicated that there were two main points of resistance, one attributed to electron transfer through the catalyst film, and another from the catalysis at the active sites (Fig. ). Resistance in charge transfer in the Co Terpy-RF film is also evident in the increasingly large Co(II/III) peak separation as CV scan rates are increased (Fig. ).