It is particularly desirable for the development of carbon utilization technologies to synthesize multicarbon products (C₂₊) from the electrochemical CO₂ reduction reaction (CO₂RR). In this work, Cu/Cu₂O(X) catalysts (where X = I, Br, Cl) for selective electroreduction of CO₂ to C₂₊ were reconstructed via cyclic voltammetry on carbon paper. The Faradaic efficiency (FE) for C₂₊ (C₂H₄, C₂H₅OH, C₃H₈OH) production over Cu/Cu₂O(Cl), Cu/Cu₂O(Br) and Cu/Cu₂O(I) reached 31%, 34% and 58%, respectively, at a potential of −0.76 V vs. the reversible hydrogen electrode (RHE). The Cu⁺ and Cu⁰ species obtained from the reconstruction of Cu/CuX are primarily responsible for the high C₂₊ producing activity.

从电化学CO ₂还原反应(CO ₂ RR)合成多碳产物(C _{2+ )是碳利用技术发展的特别期望。}在这项工作中，通过循环伏安法在复写纸上重建用于将 CO ₂选择性电还原为 C ₂₊的Cu/Cu ₂ O(X) 催化剂（其中 X = I、Br、Cl） 。C ₂₊ (C ₂ H ₄ , C ₂ H ₅ OH, C ₃ H ₈ OH) 在 Cu/Cu ₂ O(Cl), Cu/Cu ₂ O(Br) 和 Cu/铜相对于可逆氢电极 (RHE)，在 -0.76 V 的电位下，_{2 O(I) 分别达到 31%、34% 和 58%。}从 Cu/CuX 的重建中获得的Cu ⁺和 Cu ^{0物种是产生高 C} ₂₊活性的主要原因。