Heteroatom-induced tensile strain in copper lattice boosts CO_(2) electroreduction toward multi-carbon products  

作　　者：Zhiyang Zhai Deliang Li Xin Lu Huizhu Cai Qi Hu Hengpan Yang Chuanxin He 

机构地区：[1]College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen,Guangdong,China

出　　处：《Carbon Energy》2024年第12期298-306,共9页碳能源(英文)

基　　金：Basic and Applied Basic Research Foundation of Guangdong Province,Grant/Award Numbers:2022B1515120084,2023A1515012776;National Natural Science Foundation of China,Grant/Award Numbers:22172099,U21A20312;Shenzhen Science and Technology Program,Grant/Award Number:RCYX20200714114535052。

摘　　要：Strain engineering on metal-based catalysts has been utilized as an efficacious strategy to regulate the mechanism and pathways in various electrocatalytic reactions.However,controlling strain and establishing the strain-activity relationship still remain significant challenges.Herein,three different and continuous tensile strains(CuPd-1.90%,CuAu-3.37%,and CuAg-4.33%)are successfully induced by introducing heteroatoms with different atomic radius.The catalytic performances of CuPd-1.90%,CuAu-3.37%,and CuAg-4.33%display a positive correlation against tensile strains in electrochemical CO_(2) reduction reaction(CO_(2)RR).Specifically,CuAg-4.33%exhibits superior catalytic performance with a 77.9%Faradaic efficiency of multi-carbon products at−300mA cm^(-2) current density,significantly higher than those of pristine Cu(Cu-0%).Theoretical calculations and in situ spectroscopies verify that tensile strain can affect the d-band center of Cu,thereby altering the binding energy of*CO intermediates and Gibbs free energies of the C-C coupling procedure.This work might highlight a new method for precisely regulating the lattice strain of metallic catalysts in different electrocatalytic reactions.

关 键 词：CO_(2)electroreduction copper catalysts heteroatoms doping multi-carbon products tensile strain 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]