Highly dispersed atomic-level Ni active sites confined in defects for efficient electrocatalytic reduction of carbon dioxide  

作　　者：Wenjun Zhang Chen Zhao Yang Yang Ruotong Chen Yue Wu Jiaqi Dai Yuxing Zhang Huajie Liu Mingyang Liu 

机构地区：[1]College of Environmental Science and Engineering,State Key Laboratory of Medicinal Chemical Biology,Nankai University,Tianjin 300350,China [2]School of Chemical Science and Engineering,Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education and Shanghai Research Institute for Intelligent Autonomous Systems,Tongji University,Shanghai200092,China

出　　处：《Journal of Energy Chemistry》2024年第12期1-10,共10页能源化学（英文版）

基　　金：supported by the Tianjin Science and Technology support key projects (20JCYBJC01420)。

摘　　要：Electrocatalytic CO_(2) reduction reaction (eCO_(2)RR) presents a promising approach for harnessing renewable energy and converting greenhouse gas (CO_(2)) into high value-added CO products.N-doped single atom (SA) and atomic-level metal nanocluster (MN) tandem catalysts with rich defects for eCO_(2)RR are reported,which achieved a maximum CO Faraday efficiency (FE_(CO)) of 97.7%(-0.7 V vs.RHE) in the H-type cell and maintained over 95% FE_(CO)at potentials from -0.18 to -0.73 V vs.RHE in the flow cell.Furthermore,the catalyst in the flow cell demonstrated a remarkably low onset potential of-0.14 V vs.RHE and the current density was approximately three times that of the H-type cell.Interestingly,XPS analysis indicates that carbon substrates containing defects have more pyridine-N content.DFT calculations and in-situ attenuated total reflection Fourier transform infrared support this finding by showing that the Ni-(N-C_(2))_(3) active sites with defect favors preferentially convert CO_(2)-to-CO.

关 键 词：Electrocatalytic CO_(2)RR Atomic-level nanoclusters DEFECTS Catalytic mechanism 

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