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Tunable CO2 electroreduction to ethanol and ethylene with controllable interfacial wettability.
- Source :
- Nature Communications; 6/16/2023, Vol. 14 Issue 1, p1-12, 12p
- Publication Year :
- 2023
-
Abstract
- The mechanism of how interfacial wettability impacts the CO<subscript>2</subscript> electroreduction pathways to ethylene and ethanol remains unclear. This paper describes the design and realization of controllable equilibrium of kinetic-controlled *CO and *H via modifying alkanethiols with different alkyl chain lengths to reveal its contribution to ethylene and ethanol pathways. Characterization and simulation reveal that the mass transport of CO<subscript>2</subscript> and H<subscript>2</subscript>O is related with interfacial wettability, which may result in the variation of kinetic-controlled *CO and *H ratio, which affects ethylene and ethanol pathways. Through modulating the hydrophilic interface to superhydrophobic interface, the reaction limitation shifts from insufficient supply of kinetic-controlled *CO to that of *H. The ethanol to ethylene ratio can be continuously tailored in a wide range from 0.9 to 1.92, with remarkable Faradaic efficiencies toward ethanol and multi-carbon (C<subscript>2+</subscript>) products up to 53.7% and 86.1%, respectively. A C<subscript>2+</subscript> Faradaic efficiency of 80.3% can be achieved with a high C<subscript>2+</subscript> partial current density of 321 mA cm<superscript>−2</superscript>, which is among the highest selectivity at such current densities. The mechanism of how interfacial wettability impacts the CO<subscript>2</subscript> electcgq Herein, the authors describe the design and realization of controllable equilibrium of kinetic controlled *CO and *H to reveal its contribution to ethylene and ethanol pathways. [ABSTRACT FROM AUTHOR]
- Subjects :
- ELECTROLYTIC reduction
ETHYLENE
WETTING
ETHANOL
ALKANETHIOLS
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 14
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 164373885
- Full Text :
- https://doi.org/10.1038/s41467-023-39351-2