(648i) PCN-222(Cu) Towards Electrochemical CO2 Reduction in Organic Media with ~100mA/cm2 Currents and 75% Faradaic Efficiencies Towards C1 & C2 Products

Porphyrin-based Zirconium MOFs have considerable conductivity post-metalation, compared to other Zr MOFs or any other MOFs in general. This makes them excellent candidates for electrocatalysis applications. In previous studies, these MOFs have been deposited on glass substrates and deployed for electrocatalytic or photocatalytic application for CO₂-RR. Furthermore, these MOFs have been post-metalated with either Fe, Zn or Cu to enhance the Faradaic efficiency and overall activity to yield CO and trace amounts of CH₄ and other C₂ products in aqueous media. PCN-222(Cu) has been doped with Au nano-needles to increase the stability and Faradaic efficiencies towards ethylene. However, in organic media, application of MOFs or even planar metals and other catalysts have been less explored due to limitations in obtained current densities and poor selectivity towards C₂ products. However, by utilizing a continuous GDE based approach, PCN-222(Cu) has been proven to yield a wide range set of C₁ & C₂ products mainly formats, oxalates and syngas. These coupled with record high current densities (compared to planar metals or any inorganic catalyst) leads us to the conclusion that PCN-222(Cu) outperforms any other reported catalyst to date towards electrochemical CO2-RR in organic media.