Selective electroreduction of carbon dioxide to methanol on copper selenide nanocatalysts

Abstract

Production of methanol from electrochemical reduction of carbon dioxide is very attractive. However, achieving high Faradaic efficiency with high current density using facile prepared catalysts remains to be a challenge. Herein we report that copper selenide nanocatalysts have outstanding performance for electrochemical reduction of carbon dioxide to methanol, and the current density can be as high as 41.5 mA cm−2 with a Faradaic efficiency of 77.6% at a low overpotential of 285 mV. The copper and selenium in the catalysts cooperate very well for the formation of methanol. The current density is higher than those reported up to date with very high Faradaic efficiency for producing methanol. As far as we know, this is the first work for electrochemical reduction of carbon dioxide using copper selenide as the catalyst.

A Mn-N3 single-atom catalyst embedded in graphitic carbon nitride for efficient CO2 electroreduction

“…Since the reference electrode (Ag/Ag + electrode) used for the organic electrolyte is different from that (Ag/AgCl electrode) for aqueous electrolyte and the equilibrium potential for CO is −1.68 V vs. Ag/ Ag + in the IL electrolyte ( Supplementary Fig. 16) 31,32 , the overpotential is adopted for the following discussion. Figure 3f shows that the CO FE of Mn-C 3 N 4 /CNT maintains over 90% in a wide overpotential range from 0.22 to 0.62 V and reaches a maximum of 98.3% at 0.42 V overpotential.…”

CO2valorisation towards alcohols by Cu-based electrocatalysts: challenges and perspectives

“…Cu-based electrocatalyst towards methanol production from CO 2 in a liquid electrolyte (batch conditions). Modified from our work 40 with updated data taken from references [71][72][73][74][75][76][77][78][79][80][81][82][83] .…”

“…Faradaic efficiencies and partial current densities of the best liquid-phase EC CO 2 R electrocatalysts towards methanol, ethanol and n-propanol production. Authors with data taken from 62,73,74,83,84,[90][91][92][93][94][95][96][97][98][100][101][102]124 .…”

Promoting CO2 methanation via ligand-stabilized metal oxide clusters as hydrogen-donating motifs

“…he electrochemical reduction of carbon dioxide (CO 2 ) enables the storage of intermittent renewable energy in the form of chemical bonds 1,2 . CO 2 emissions then become a valuable feedstock in the production of chemical fuels, enabling closing of the carbon cycle [3][4][5] . Methane (CH 4 ) especially benefits from an existing widely-deployed infrastructure for its storage, distribution and utilization [6][7][8] .…”