A Nanocomposite of Bismuth Clusters and Bi2O2CO3 Sheets for Highly Efficient Electrocatalytic Reduction of CO2 to Formate
The renewable‐electricity‐driven CO2 reduction to formic acid would contribute to establishing a carbon‐neutral society. The current catalyst suffers from limited activity and stability under high selectivity and the ambiguous nature of active sites. Herein, we report a powerful Bi2S3‐derived cataly...
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Published in | Angewandte Chemie International Edition Vol. 62; no. 3 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
Wiley Subscription Services, Inc
16.01.2023
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Edition | International ed. in English |
Subjects | |
Online Access | Get full text |
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Summary: | The renewable‐electricity‐driven CO2 reduction to formic acid would contribute to establishing a carbon‐neutral society. The current catalyst suffers from limited activity and stability under high selectivity and the ambiguous nature of active sites. Herein, we report a powerful Bi2S3‐derived catalyst that demonstrates a current density of 2.0 A cm−2 with a formate Faradaic efficiency of 93 % at −0.95 V versus the reversible hydrogen electrode. The energy conversion efficiency and single‐pass yield of formate reach 80 % and 67 %, respectively, and the durability reaches 100 h at an industrial‐relevant current density. Pure formic acid with a concentration of 3.5 mol L−1 has been produced continuously. Our operando spectroscopic and theoretical studies reveal the dynamic evolution of the catalyst into a nanocomposite composed of Bi0 clusters and Bi2O2CO3 nanosheets and the pivotal role of Bi0−Bi2O2CO3 interface in CO2 activation and conversion.
An electrocatalyst derived from Bi2S3 is very powerful for the reduction of CO2 to formic acid, achieving a current density of 2.0 A cm−2 with a formate Faradaic efficiency of 93 % and a single‐pass formate yield of 67 %. The active catalyst is composed of Bi nanoclusters on Bi2O2CO3 nanosheets and the interfacial Bi site plays a pivotal role. |
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Bibliography: | These authors contributed equally to this work. |
ISSN: | 1433-7851 1521-3773 |
DOI: | 10.1002/anie.202214959 |