Electrocatalytic Reduction of CO_(2)to CO with Almost 100%Faradaic Efficiency Using Oxygen-Vacancy Enriched Two-Dimensional MgO

作     者：Yu Han Sunggi An Xinyu Zhan Leiduan Hao Liang Xu Song Hong Dongmin Park Yuxin Chen Yiwen Xu Jiwen Zhao Xinyi Tan Alex W.Robertson Yousung Jung Zhenyu Sun 

作者机构：State Key Laboratory of Organic-Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029 Department of Chemical and Biomolecular Engineering(BK21four)Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141 Beijing Key Laboratory of Environmental Science and EngineeringSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081 Department of PhysicsUniversity of WarwickCoventry 

出 版 物：《CCS Chemistry》 (中国化学会会刊（英文）)

年 卷 期：2024年第6卷第6期

页      面：1477-1486页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(grant no.21972010) the National Key Research and Development Program of China(grant no.2022YFC2105900) the Beijing Natural Science Foundation(grant no.2192039) Fundamental Research Funds for the Central Universities(grant nos.JD2310,ZY2317,and buctrc202226) the NRF Korea(grant no.NRF-2019M3D3A1A01069099) 

主　　题：CO_(2)reduction electrocatalysis CO MgO ionic liquid oxygen-vacancy 

摘      要：The design and development of cheap,abundant,and efficient electrocatalysts for selective CO_(2)electroreduction is highly desirable yet remains an ongoing ***,we report on our discovery of the use of two-dimensional MgO rich in oxygen vacancies(VO)as an electrocatalyst for the efficient reduction of CO_(2)to yield CO in 1-butyl-3-methylimidazolium hexafluorophosphate dissolved in *** faradaic efficiency toward CO reaches as high as 99.6±0.24%with a current density of up to 40.8 mA cm−*** functional theory calculations illustrate that the introduction of VO in MgO substantially lowers the reaction-free energy for the transformation of ^(*)COO^(−) to ^(*)COOH,the potential determining step,which greatly boosts CO_(2)conversion *** work opens the way to realizing economic and efficient CO_(2)electrolysis of group II metals.