Electrocatalytic activity of Cu electrode in electroreduction of CO2

Effect of Gaseous Impurities on the Electrochemical Reduction of CO2 on Copper Electrodes

“…When poisoning occurs, the Cu electrode loses its shininess. Surface spectra studies showed deposition of amorphous carbon (17)(18)(19) or copper oxide patina (20), which were suggested to be responsible for the poisoning processes. Periodic anodic pulsing was shown to postpone the deactivation (14).…”

Electrocatalytic properties of Cu–Zr amorphous alloy towards the electrochemical hydrogenation of nitrobenzene

“…As a Cu electrode electrochemical was also extracted three times with vigorous stirring using reduction of alcohols in the potential range applied does benzene. The final benzene solution was analysed by gas not occur [29,30], we believe that the growing cathodic chromatography (GC).…”

Electrochemical interfacial influences on deoxygenation and hydrogenation reactions in CO reduction on a Cu(100) surface

“…One important experimental phenomenon is consistent with our results that copper electrode was found to be easily poisoned by graphitic or amorphous carbon formed during electrolysis. [10][11][12] Modulation of electrode potential could effectively avoid the poisoning carbon formation, 51,52 indicating that the carbon species formation resulting from deoxygenation can be controlled by shifting the potential. It is worth mentioning that the electrode potential is kept constant during the coupled proton and electron transfer in reality.…”

“…[1][2][3][4][5] Copper electrode was experimentally found to be able to reduce CO 2 into hydrocarbons (methane and ethylene) uniquely, [6][7][8][9] and the reaction mechanisms were extensively investigated. [10][11][12][13][14][15] It was found that CO was not only the first reduced product but also a new starting species that could be further reduced to the final products of hydrocarbons. The rate-determining step was suggested to be the electron transfer to the adsorbed CO, and the adsorbed COH was proposed to be the crucial intermediate.…”

“…The rate-determining step was suggested to be the electron transfer to the adsorbed CO, and the adsorbed COH was proposed to be the crucial intermediate. [10][11][12][13][14][15] To advance our understanding of the experimental findings, density functional theory (DFT) calculations were employed widely for investigating the mechanisms in CO 2 reduction at the atomic level. [16][17][18][19][20][21][22][23][24][25] Norskov's group has developed a computational hydrogen electrode model to map out the free energy diagrams from CO 2 to CH 4 including about 40 elementary steps on Cu(111).…”