Atomic-level-designed copper atoms on hierarchically porous gold architectures for high-efficiency electrochemical CO reduction

作     者：Yang Zhao Xunlin Liu Dechao Chen Zhixiao Liu Qingcheng Yang Xin Lin Ming Peng Pan Liu Yongwen Tan 赵扬;刘迅林;陈德超;刘智骁;杨庆成;林欣;彭鸣;刘攀;谭勇文

作者机构：College of Materials Science and EngineeringHunan UniversityChangsha 410082China State Key Laboratory of Metal Matrix CompositesSchool of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200030China 

基　　金：supported by the National Natural Science Foundation of China (51771072) the Youth 1000 Talent Program of China (799229034) the Outstanding Youth Scientist Foundation of Hunan Province (2020JJ2006) the Fundamental Research Funds for the Central Universities Hunan University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Independent Research Project (71860007) Hunan Provincial Innovation Foundation for Postgraduate (CX20190312) 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2021年第64卷第8期

页      码：1900-1909页

摘      要：Electrochemical CO_(2) reduction is a promising technology for solving the CO_(2) emission problems and producing value-added products. Here, we report a hierarchically porous Cu1Au single-atom alloy(SAA) as an efficient electrocatalyst for CO_(2) reduction. Benefiting from the hierarchically porous architectures with abundant vacancies as well as three-dimensional accessible active sites, the as-prepared nanoporous Cu1Au SAA catalyst shows remarkable CO_(2) reduction performance with nearly 100% CO Faraday efficiency in a wide potential range(-0.4 to -0.9 V vs. reversible hydrogen electrode. The in-situ X-ray absorption spectroscopy studies and density functional theory calculations reveal that the Cu-Au interface sites serve as the intrinsic active centers,which can facilitate the activated adsorption of CO_(2) and stabilize the *COOH intermediate.

主 题 词：hierarchically porous structure single-atom alloy electrochemical carbon dioxide reduction gold-copper alloy operando X-ray absorption spectroscopy 

学科分类：081705[081705] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1007/s40843-020-1583-4

馆 藏 号：203102560...