{"title":"In Situ Constructed Cu–Ni Alloy Nanowires Enhance the CO2 Electrochemical Conversion of Ethylene","authors":"Kunyu Xu, , , Haoling Yang, , , Licheng Lu, , , Zihao Yang*, , , Juan Zhang*, , , Meiqin Lin, , and , Zhaoxia Dong, ","doi":"10.1021/acsami.5c12049","DOIUrl":null,"url":null,"abstract":"<p >Electrocatalysis CO<sub>2</sub> reduction for ethylene(C<sub>2</sub>H<sub>4</sub>) production based on clean energy is an effective strategy to address energy issues and the climate crisis. However, the limited catalytic selectivity and high production costs of C<sub>2</sub>H<sub>4</sub> hinder its commercial application. Here, we employ a nonprecious metal-doping strategy to <i>in situ</i> construct Cu–Ni alloy nanowires (Cu–Ni NWs) on the gas diffusion layer (GDL). Ni-doping modulated the electronic environment of Cu, significantly improving the product distribution of CO<sub>2</sub> reduction. At −1.0 V, the Faradaic efficiency for C<sub>2</sub>H<sub>4</sub> reached 49.18%, with a current density of 290.01 mA cm<sup>–2</sup>. Furthermore, the Cu–Ni NWs exhibited significant catalytic stability over 40 h. Mechanistic studies indicate that Ni atoms provide more CO<sub>2</sub> adsorption and activation sites on the catalyst surface, facilitating the CO<sub>2</sub>RR. Furthermore, Ni doping significantly enhances the adsorption of the *CO intermediate and lowers the kinetic barrier for C–C coupling, directing the reaction preferentially toward the C<sub>2</sub>H<sub>4</sub> pathway. This work expands the design space for nonprecious metal catalysts, which should be inspiring for the development of low-cost, high-performance CO<sub>2</sub> reduction electrocatalysts.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"17 40","pages":"56077–56086"},"PeriodicalIF":8.2000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Materials & Interfaces","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsami.5c12049","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Electrocatalysis CO2 reduction for ethylene(C2H4) production based on clean energy is an effective strategy to address energy issues and the climate crisis. However, the limited catalytic selectivity and high production costs of C2H4 hinder its commercial application. Here, we employ a nonprecious metal-doping strategy to in situ construct Cu–Ni alloy nanowires (Cu–Ni NWs) on the gas diffusion layer (GDL). Ni-doping modulated the electronic environment of Cu, significantly improving the product distribution of CO2 reduction. At −1.0 V, the Faradaic efficiency for C2H4 reached 49.18%, with a current density of 290.01 mA cm–2. Furthermore, the Cu–Ni NWs exhibited significant catalytic stability over 40 h. Mechanistic studies indicate that Ni atoms provide more CO2 adsorption and activation sites on the catalyst surface, facilitating the CO2RR. Furthermore, Ni doping significantly enhances the adsorption of the *CO intermediate and lowers the kinetic barrier for C–C coupling, directing the reaction preferentially toward the C2H4 pathway. This work expands the design space for nonprecious metal catalysts, which should be inspiring for the development of low-cost, high-performance CO2 reduction electrocatalysts.
期刊介绍:
ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.