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Amorphous carbon coating enhances activity of high rate CO2 electroreduction to CO.
- Source :
- Journal of Materials Chemistry A; 6/21/2023, Vol. 11 Issue 23, p12114-12120, 7p
- Publication Year :
- 2023
-
Abstract
- Electrochemical reduction of CO<subscript>2</subscript> is a promising strategy to realize clean energy and a balanced carbon cycle. However, a critical challenge for this approach is to develop effective electrocatalysts with high current density and selectivity. Here, we report the facile synthesis of a highly efficient carbon coated silver (Ag/C) catalyst for CO<subscript>2</subscript> reduction through a simple ultrasonic pyrolysis method. The obtained Ag/C exhibits high CO faradaic efficiency of up to 95% at a high current density of 800 mA cm<superscript>−2</superscript> in 1 M KOH, which is far superior to the performance of state-of-the-art Ag-based catalysts. Mechanistic investigations combined with surface spectroscopic studies reveal that the amorphous carbon shell can boost the CO<subscript>2</subscript> adsorption in the catalytic layer during CO<subscript>2</subscript> electroreduction, favoring the formation of highly active solid–liquid–gas interfacial environments. The findings of this study contribute to the design and synthesis of highly active Ag-based catalysts for industrial-level applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 11
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 164283556
- Full Text :
- https://doi.org/10.1039/d3ta01075a