Atomically Dispersed Fe-Co Bimetallic Catalysts for the Promoted Electroreduction of Carbon Dioxide

Zhangsen Chen; Gaixia Zhang; Yuren Wen; Ning Chen; Weifeng Chen; Tom Regier; James Dynes; Yi Zheng; Shuhui Sun

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Atomically Dispersed Fe-Co Bimetallic Catalysts for the Promoted Electroreduction of Carbon Dioxide

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The electroreduction reaction of CO_(2)(ECO_(2)RR)requires high-performance catalysts to convert CO_(2)into useful chemicals.Transition metal-based atomically dispersed catalysts are promising for the high selectivity and activity in ECO_(2)RR.This work presents a series of atomically dispersed Co,Fe bimetallic catalysts by carbonizing the Fe-introduced Co-zeolitic-imidazolate-framework(C-Fe-Co-ZIF)for the syngas generation from ECO_(2)RR.The synergistic effect of the bimetallic catalyst promotes CO production.Compared to the pure C-Co-ZiF,C-Fe-Co-ZIF facilitates CO production with a CO Faradaic efficiency(FE)boost of 10%,with optimal FE_(CO)of 51.9%,FE_(H_(2))of 42.4%at-0.55 V,and CO current density of 8.0 mA cm^(-2)at-0.7 V versus reversible hydrogen electrode(RHE).The H_(2)/CO ratio is tunable from 0.8 to 4.2 in a wide potential window of-0.35 to-0.8 V versus RHE.The total FE_(CO+H_(2))maintains as high as 93%over 10 h.The proper adding amount of Fe could increase the number of active sites and create mild distortions for the nanoscopic environments of Co and Fe,which is essential for the enhancement of the CO production in ECO_(2)RR.The positive impacts of Cu-Co and Ni-Co bimetallic catalysts demonstrate the versatility and potential application of the bimetallic strategy for ECO_(2)RR.

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《纳微快报：英文版》 |2022年第2期|79-93|共15页
作者
Zhangsen Chen; Gaixia Zhang; Yuren Wen; Ning Chen; Weifeng Chen; Tom Regier; James Dynes; Yi Zheng; Shuhui Sun;
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作者单位

Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications;

Varennes;

QC J3X 1P7;

Canada;

School of Materials Science and Engineering;

University of Science and Technology;

100083 Beijing;

People’s Republic of China;

Canadian Light Source;

University of Saskatchewan;

Saskatoon;

SK S7N 2V3;

Canada;

Research Institute of Photocatalysis;

State Key Laboratory of Photocatalysis on Energy and Environment;

Fuzhou University;

Fuzhou 350116;

People’s Republic of China;

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原文格式 PDF
正文语种 chi
中图分类物理化学（理论化学）、化学物理学;
关键词
CO_(2)reduction; Electrocatalysis; Syngas production; Cobalt; Iron; Bimetallic catalysts;

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Atomically Dispersed Fe-Co Bimetallic Catalysts for the Promoted Electroreduction of Carbon Dioxide

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