Experimental study demonstrates high multi-carbon yields in an electrochemical system, indicating a viable pathway for renewable chemical manufacturing.
Electrochemical reduction of CO₂ to multi-carbon (C₂) compounds presents an innovative strategy for the valorization of renewable energy into essential chemicals and fuels. However, the sluggish dynamics of carbon-carbon (C-C) coupling reaction directly impacts the efficiency and selectivity towards C₂ products. Herein, we introduce a practical electrocatalytic design leveraging asymmetric *CO adsorption to facilitate C-C linkage. The synthesized a bimetallic catalyst, composed of single-atom zinc and copper clusters (Cu₄), uniformly anchored on nitrogen-doped graphene (Zn₁Cux/NC). In-situ Raman spectroscopy and theoretical calculations revealed that the high *CO coverage promoted the C-C coupling reaction. Moreover, optimizing the anodic reaction environment further augments C2 product yields. Notably, this catalytic system achieves a high CO₂-to-C₂ conversion yield of 84.9% at a commercially relevant current density of -100 mA/cm², alongside urea oxidation reaction at the anode, making a significant progress in the electrochemical reduction of CO₂ to valuable C₂ products.
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Wang et al. (2025) studied this question.
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