Electrocatalytic conversion of CO2 over in-situ grown Cu microstructures on Cu and Zn foils

Electrochemical conversion of carbon dioxide to value added multi-carbon products is great importance and a promising approach mitigate greenhouse gases. In this work, we report the fabrication electrodes by depositing Cu over metallic foils Zn, which show high faradic efficiency for CO2 formic acid, acetate, methanol. The morphology, phase oxidation state were different on two while maintaining same synthesis steps. particles embedded foil (Cu/Cu-foil) are in 3D cuboids form with flat smooth faces, whereas Zn (Cu/Zn-foil) emerge shape flowers club microspikes grown perpendicularly from root. For electrocatalytic CO2, Cu/Cu-foil shows selectivity acid ethyl acetate highest faradaic 78 % at −0.3 V vs RHE, 64 −1.0 (vs RHE) products, respectively. contrast, Cu/Zn-foil displays towards methanol, 48 indicating that product can be easily modulated changing deposited. Both electrodes, Cu/Zn-foil, long-term stable performance during conversion.