Bulk-immiscible CuAg alloy nanorods prepared by phase transition from oxides for electrochemical CO2 reduction

Yihong Yu; Di Wang; Yimeng Hong; Teng Zhang; Chuangwei Liu; Jing Chen; Gaowu Qin; Song Li

doi:10.1039/d2cc04789f

Bulk-immiscible CuAg alloy nanorods prepared by phase transition from oxides for electrochemical CO₂ reduction

Chem Commun (Camb). 2022 Oct 4;58(79):11163-11166. doi: 10.1039/d2cc04789f.

Authors

Yihong Yu¹, Di Wang¹, Yimeng Hong¹, Teng Zhang¹, Chuangwei Liu¹, Jing Chen², Gaowu Qin¹, Song Li^{1

3}

Affiliations

¹ Key Lab for Anisotropy and Texture of Materials (MoE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China. lis@atm.neu.edu.cn.
² College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, China.
³ Institute for Frontier Technologies of Low-Carbon Steelmaking, Northeastern University, Shenyang, 110819, China.

PMID: 36111512
DOI: 10.1039/d2cc04789f

Abstract

Combining Cu and Ag in an alloy state holds promise to serve as a tandem catalyst for electrocatalytic CO₂ reduction, but is restricted by immiscibility in the bulk. Here, a far-from-equilibrium method is developed to synthesize CuAg alloy by electroreduction of Cu₂Ag₂O₃ under a large cathodic overpotential. The alloy state of CuAg is conducive to the formation of C₂₊ molecules. A high formation rate of C₂H₄ of 159.8 μmol cm^-2 h^-1 is reached on the CuAg alloy nanorods, 2.3 times higher than that on pure Cu.