Electrochemical Conversion of CO 2 to Syngas with Controllable CO/H 2 Ratios over Co and Ni Single‐Atom Catalysts
[1];
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[4]
- National Synchrotron Radiation Laboratory CAS Center for Excellence in Nanoscience University of Science and Technology of China Hefei Anhui 230029 China, Department of Chemical Engineering Columbia University New York NY 10027 USA
- School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore
- Department of Chemical Engineering Columbia University New York NY 10027 USA
- Department of Chemical Engineering Columbia University New York NY 10027 USA, Chemistry Division Brookhaven National Laboratory Upton NY 11973 USA
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
- Department of Physics Florida A&,M University Tallahassee FL 32307 USA
- National Synchrotron Radiation Laboratory CAS Center for Excellence in Nanoscience University of Science and Technology of China Hefei Anhui 230029 China
Abstract The electrochemical CO 2 reduction reaction (CO 2 RR) to yield synthesis gas (syngas, CO and H 2 ) has been considered as a promising method to realize the net reduction in CO 2 emission. However, it is challenging to balance the CO 2 RR activity and the CO/H 2 ratio. To address this issue, nitrogen‐doped carbon supported single‐atom catalysts are designed as electrocatalysts to produce syngas from CO 2 RR. While Co and Ni single‐atom catalysts are selective in producing H 2 and CO, respectively, electrocatalysts containing both Co and Ni show a high syngas evolution (total current >74 mA cm −2 ) with CO/H 2 ratios (0.23–2.26) that are suitable for typical downstream thermochemical reactions. Density functional theory calculations provide insights into the key intermediates on Co and Ni single‐atom configurations for the H 2 and CO evolution. The results present a useful case on how non‐precious transition metal species can maintain high CO 2 RR activity with tunable CO/H 2 ratios.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG02-13ER16381; SC0009476
- OSTI ID:
- 1581851
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Vol. 59 Journal Issue: 8; ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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