Research Article

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2020, 13(12): 3206–3211

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https://doi.org/10.1007/s12274-020-2988-1

Electrochemical conversion of CO2 to syngas with a wide range of CO/H2 ratio over Ni/Fe binary single-atom catalysts

Meng Zhang1,§ Zheng Hu1,§, Lin Gu3, Qinghua Zhang3, Linghui Zhang1, Qian Song1, Wei Zhou1, and Shi Hu1,2 (✉)

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1 Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, China
2 Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230000, China
3 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
§ Meng Zhang and Zheng Hu contributed equally to this work.

Keywords: CO2 reduction, syngas, binary single-atom catalyst, electrocatalysis

Received: 28 June 2020

Accepted:

Published: 10 August 2020

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  • Abstract
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A series of carbon-based binary single-atom catalysts of Fe and Ni coordinated by nitrogen are fabricated using a glucose-chelating method. Depending on the Ni/Fe content, they exhibit a wide-range of controllable CO/H2 ratio from 0.14 to 10.86, which is meaningful to specific chemical processes. The durability of the catalyst is evaluated over an 8-hour period with no significant degradation of activity. The variation of the faradaic efficiency with Ni/Fe content is justified by density-functional-theory based calculation of the reaction barrier in both hydrogen evolution and CO2 reduction reactions.
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Electrochemical conversion of CO2 to syngas with a wide range of CO/H2 ratio over Ni/Fe binary single-atom catalysts. Nano Res. 2020, 13(12): 3206–3211 https://doi.org/10.1007/s12274-020-2988-1

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