Potential-Dependent Competitive Electroreduction of CO2 into CO and Formate on Cu(111) from an Improved H Coverage-Dependent Electrochemical Model with Explicit Solvent Effect
@article{Ou2020PotentialDependentCE, title={Potential-Dependent Competitive Electroreduction of CO2 into CO and Formate on Cu(111) from an Improved H Coverage-Dependent Electrochemical Model with Explicit Solvent Effect}, author={Lihui Ou and Zixi He}, journal={ACS Omega}, year={2020}, volume={5}, pages={12735 - 12744} }
An improved density functional theory-based H coverage-dependent electrochemical model with explicit solvent effect is proposed for Cu(111), which is used to identify potential-dependent initial competitive CO2 electroreduction pathways considering HER. We find that a chemisorbed CO2 molecule at the present electrode/aqueous interface can be spontaneously formed and the overpotentials can affect its coordination pattern. The Eley–Rideal mechanism may be more favorable during the initial CO2…
4 Citations
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Copper foams have been shown to electrocatalyze the carbon dioxide reduction reaction (CO2RR) to formate (HCOO-) with significant faradaic efficiency (FE) at low overpotentials. Unlike the CO2RR…
References
SHOWING 1-10 OF 76 REFERENCES
Reaction Mechanisms for the Electrochemical Reduction of CO2 to CO and Formate on the Cu(100) Surface at 298 K from Quantum Mechanics Free Energy Calculations with Explicit Water.
- ChemistryJournal of the American Chemical Society
- 2016
To alter the product distribution, it is needed to control this first step of CO2 binding, which might involve controlling pH, alloying, or changing the structure at the nanoscale.
Origin of the overpotentials for HCOO- and CO formation in the electroreduction of CO2 on Cu(211): the reductive desorption processes decide.
- ChemistryPhysical chemistry chemical physics : PCCP
- 2018
It is found that chemical adsorption state of CO2 is effectively stabilized by the substrate, which is expected to be dominant at potentials below -0.27 V vs. SHE, much earlier than that previously reported on Cu(100).
Mechanistic study on Cu-catalyzed CO2 electroreduction into CH4 at simulated low overpotentials based on an improved electrochemical model.
- ChemistryPhysical chemistry chemical physics : PCCP
- 2019
The results show that the present defined CH2O and CHOH pathways via common intermediates CHO and CH2 may be able to occur parallelly at the present simulated low overpotential, further validating the rationality of the present employed methodology.
Free-Energy Barriers and Reaction Mechanisms for the Electrochemical Reduction of CO on the Cu(100) Surface, Including Multiple Layers of Explicit Solvent at pH 0.
- ChemistryThe journal of physical chemistry letters
- 2015
It is found that that chemisorbed hydroxyl-methylene (CH-OH) is the key intermediate determining the selectivity for methane over methanol.
Chemical and electrochemical hydrogenation of CO2 to hydrocarbons on Cu single crystal surfaces: insights into the mechanism and selectivity from DFT calculations
- Chemistry
- 2015
Atomic level mechanistic insights into the chemical and electrochemical reduction of CO2 on the Cu(111) and Cu(100) surfaces are presented based on DFT-based thermodynamic and kinetic calculations.…
Reaction mechanisms of CO2 electrochemical reduction on Cu(111) determined with density functional theory
- Chemistry
- 2014
Mechanistic Study of Pt-Catalyzed Electrooxidation of HCOOH in Acid Medium: Kinetic Considerations on the Effect of Solvation
- ChemistryThe Journal of Physical Chemistry C
- 2018
The HCOOH oxidation on Pt(111) under gas phase and the present simulated electrochemical environment have been studied systematically by combining density functional theory with mean-field kinetic…
Adsorption of CO, intermediately formed in electrochemical reduction of CO2, at a copper electrode
- Chemistry, Materials Science
- 1991
Electroreduction of CO2 at Cu electrodes in aqueous electrolytes yields CH4 and C2H4, with adsorbed CO formed as an intermediate species. The state of adsorbed CO on a Cu electrode was studied with…