Synergistic effect of Cu/Cu₂O surfaces and interfaces for boosting electrosynthesis of ethylene from CO₂ in a Zn–CO₂ battery

Abstract

We constructed Cu/Cu2O hybrid catalysts with highly active surfaces/interfaces to realize a synergistic effect, thus improving the selectivity and efficiency of C2H4 production.

Value‐Added Aqueous Metal‐Redox Bicatalyst Batteries

“…Several electrocatalytic materials were recently reported to achieve the production of hydrocarbons in aqueous Zn-CO 2 batteries. [99,108] A layered nanosheet structured Ni-Mn-Cu-Co-Fe-Al high-entropy layered oxides (HELOs) was constructed through the topological transformation of layered double hydroxides for the photoelectrocatalytic reduction of CO 2 . [108] The illumination can tune the product CO/CH 4 ratio (Figure 9l,m) and play a positive role in both the charging and discharging processes in an aqueous rechargeable Zn-CO 2 battery.…”

“…An efficient Cu/Cu 2 O electrocatalyst was reported for the electrocatalytic conversion of CO 2 to C 2 H 4 . [ 99 ] The Cu/Cu 2 O surfaces/interfaces can optimize the adsorption of *CO intermediate and facilitate the dimerization of *CO to C 2 H 4 , thus improving the selectivity and efficiency for the production of C 2 H 4 . The Cu/Cu 2 O‐equipped Zn‐CO 2 battery can achieve a maximum energy density of 1.17 mW cm −2 and a cyclic stability of 24 h.…”