Copper-indium bimetallic catalysts for the selective electrochemical reduction of carbon dioxide

作     者：Jiaqi Shao Yi Wang Dunfeng Gao Ke Ye Qi Wang Guoxiong Wang 邵加奇;王毅;高敦峰;叶克;王琪;汪国雄

作者机构：Key Laboratory of Superlight Materials and Surface Technology of Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001HeilongjiangChina State Key Laboratory of CatalysisDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Liaoning Key Materials Laboratory for RailwaySchool of Materials and EngineeringDalian Jiaotong UniversityDalian 116028LiaoningChina 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第9期

页      面：1393-1400页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：国家自然科学基金(21802124,91845103) 辽宁省-沈阳材料科学国家研究中心联合研发基金(20180510035) 中国博士后科学基金(2018M630307,2019T120220) 黑龙江省自然科学基金优秀青年项目(YQ2019B002) 

主　　题：CO2 electroreduction reaction Copper Indium Electrodeposition Formate 

摘      要：Copper-indium bimetallic catalysts with a dendritic structure are fabricated by a two-step electrodeposition method using a hydrogen evolution template for the CO2 electroreduction reaction(CO2RR).The dendritic Cu-In-30 catalyst electrodeposited for 30 min shows the highest specific surface area and exposes the most active sites,resulting in improved CO2RR *** dendritic Cu-In-30 catalyst exhibits distinctly higher formate partial current density(42.0 m A cm^-2)and Faradaic efficiency(87.4%)than those of the In-30 catalyst without the dendritic structure(the formate partial current density and Faradaic efficiency are 4.6 m A cm^-2 and 57.0%,respectively)at-0.85 V *** hydrogen electrode,ascribed to the increased specific surface *** Cu-In-30 catalyst can maintain stable performance for 12 h during the *** addition,the intrinsic current density of Cu-In-30 with the dendritic structure(4.8 m A cm^-2)is much higher than that of In-30 without the dendritic structure(2.1 m A cm^-2),indicating that the dendritic structure promotes the CO2RR,possibly due to additional coordination unsaturated atoms.