Cu Nanoparticles Decorating N‑Doped Erythrocyte-Shaped Carbon Nanostructures for Electrochemical CO2 Reduction
Cu-based nanostructures are considered to be promising in catalyzing electrocatalytic CO2 reduction reaction (ECO2R). Nevertheless, it is still a challenge to overcome high overpotential and competitive hydrogen evolution reaction. Herein, we aimed to engineer the activity and selectivity of ECO2R b...
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Published in | Energy & fuels Vol. 36; no. 2; pp. 958 - 964 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
20.01.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Cu-based nanostructures are considered to be promising in catalyzing electrocatalytic CO2 reduction reaction (ECO2R). Nevertheless, it is still a challenge to overcome high overpotential and competitive hydrogen evolution reaction. Herein, we aimed to engineer the activity and selectivity of ECO2R by size regulation of Cu nanoparticles in an N-doped carbon matrix. Cu nanoparticles with a size of 64 nm decorating N-doped erythrocyte-shaped carbon nanostructures (CuNPs@N–C-2) were constructed. CuNPs@N–C-2-modified electrodes displayed large electrochemically active surface area, fast charge transfer, and fast ECO2R rates and therefore exhibited excellent electrocatalytic ECO2R performance. CuNPs@N–C-2 achieved a high FECO (99%) at −0.7 V and showed long-term electrochemical stability. The studies demonstrated that both the size of Cu nanoparticles and abundant Cu-Nx sites in the N-doped carbon matrix contributed to the outstanding ECO2R performance. This work offered a potential way to explore efficient Cu-based nanostructures for ECO2R to CO. |
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ISSN: | 0887-0624 1520-5029 |
DOI: | 10.1021/acs.energyfuels.1c03823 |