Abstract
Here, we report a facile approach for synthesizing M–N–C catalysts (M = Co, Fe, Ni) at a commercial scale without employing organic solvents. Our characterization efforts indicate that single atomic catalysts with high surface areas were successfully obtained. Electrochemical measurements demonstrate that, among the three synthesized catalysts, Ni–N–C exhibits the highest performance in the electrochemical CO2 reduction reaction (CO2RR) to carbon monoxide (CO), affording 80% Faradaic efficiency (FE) of CO production at –0.49 VRHE with a turnover frequency (TOF) of 57,379 h–1. Large-scale synthesis coupled with high performance allows moving forward with the practical implementation of M–N–C catalysts for industrially relevant CO2RR.
Original language | English |
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Article number | 142427 |
Journal | Electrochimica Acta |
Volume | 455 |
DOIs | |
State | Published - Jul 1 2023 |
Funding
Electron microscopy research was supported by the Center for Nanophase Materials Sciences (CNMS) , which is a US Department of Energy, Office of Science User Facility at Oak Ridge National Laboratory. Additional support was provided by the US DOE Office of Energy Efficiency and Renewable Energy, Hydrogen and Fuel Cell Technologies Office , under the ElectroCat Consortium, DOE technology managers D. Peterson and D. Papageorgopolous. All authors acknowledge samples of M–N–C materials from Pajarito Powder, LLC.
Funders | Funder number |
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Center for Nanophase Materials Sciences | |
ElectroCat Consortium | |
U.S. Department of Energy | |
Office of Science | |
Oak Ridge National Laboratory | |
Hydrogen and Fuel Cell Technologies Office |
Keywords
- CO valorization
- Large-scale synthesis
- Microstructure
- M–N–C catalysts
- Nickel
- Single-atom catalysts