Palladium electrochemistry in the choline chloride-urea deep eutectic solvent at gold and glassy carbon electrodes

Soma, Fousseni; Rayee, Quentin; Bougouma, Moussa; Baustert, Christophe; Buess‐Herman, C.; Doneux, Thomas

doi:10.1016/j.electacta.2020.136165

Cited by 15 publications

(9 citation statements)

References 26 publications

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“…In contrast, ILs exhibit a considerably slower electron transfer rate. Among the common characteristics, both ILs and DES are solvents presenting low melting point, low volatility and moderate ionic conductivity [15,33,34] . Regardless, one of the main positive aspects of both ILs and DES is that they can be fully considered as design‐solvents.…”

Section: Ionic Solvents: Types and Featuresmentioning

confidence: 99%

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Leal‐Duaso,

Adjez,

Sánchez‐Sánchez

2024

ChemElectroChem

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The ionic solvents, including both ionic liquids (ILs) and deep eutectic solvents (DES), are deeply studied for their potential in the carbon dioxide (CO2) capture and its further electrochemical conversion using different electrocatalysts. The aim of this review is to present and critically compare the role of ILs and DES in the activation of the electrochemical CO2 reduction reaction (CO2RR) and suppression of the hydrogen evolution reaction (HER). Therefore, the most relevant advances in the use of these ionic solvents in CO2RR, either as neat reaction medium or as electrolyte in molecular solvents, have been summarized and discussed. A special focus has been made on comparing the current density, overpotential, faradaic efficiency and products selectivity of the CO2RR in the presence of the ionic solvents and relaying those results with their chemical composition. Herein, the most recent strategies reported in the literature based on the use of either DES or ILs for enhancing the electrocatalytic CO2 conversion are reviewed, and some new perspectives based on immobilized ILs at the electrode surface are discussed.

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Section: Ionic Solvents: Types and Featuresmentioning

confidence: 99%

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Leal‐Duaso,

Adjez,

Sánchez‐Sánchez

2024

ChemElectroChem

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“…The driving force of a reaction can be controlled and the thermodynamic and kinetic parameters can be measured [1]. A great deal of interest in modern electrochemistry has been intended for the metal electrocrystallization on various substrates [2][3][4]. The physico-chemical properties of electrodeposits are determined by the nucleation kinetics and the growth of metallic nuclei on the substrate [5].…”

Section: Introductionmentioning

confidence: 99%

Study on the Palladium Nucleation and Growth Mechanism in A Deep Eutectic Solvent by Electrochemical Method

Thao,

Ngan,

Tuan

et al. 2024

MaP

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By using cyclic voltammetry (CV) and chronoamperometry (CA) techniques, the thermodynamics and kinetics of palladium electrodeposition on glassy carbon electrode (GCE) in deep eutectic solvent were studied. The Pd electrodeposition process via progressive 3D nucleation mechanism was controlled by the diffusion. Non-linear fitting methods were applied to obtain the kinetic parameters in the light of Harrison – Thirsk (H-T) and Scharifker – Hills (S-H) models for 3D nucleation and growth process. From that, the diffusion coefficient of Pd (II) in reline at ambient temperature was calculated by two different ways, and the obtained results showed that it is of cm2/s by using CV. Moreover, some important parameters such as the number density of active sites on the electrode surface (No) and the nucleation frequency per active site (A) were estimated by fitting experimental CAs data with Scharifker-Mostany model. Electrodeposition, thermodynamic, electrochemical, progressive, palladium, deep eutectic solvent.

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“…Due to the large electrochemical window and acceptable ionic conductivity, DESs can display advantages over aqueous electrolytes and several nonaqueous solvents for electrochemical studies. There are now many examples in which DESs have been exploited for metal electrodeposition, electropolishing, and extraction. ,− There are also a growing number of publications in which fundamental electrochemical behavior is examined in deep eutectic solvents, examples of which include diffusion coefficients of redox species, − electron transfer kinetics, , interfacial single-crystal electrochemistry, metal underpotential deposition, , and the electrochemistry of graphene in DESs . Moreover, in a recent study, fast electron transfer (ET) has been observed in a typical DES, ethaline (1:2 choline chloride:ethylene glycol).…”

Section: Introductionmentioning

confidence: 99%

Single-Molecule Junction Formation in Deep Eutectic Solvents with Highly Effective Gate Coupling

et al. 2023

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The environment surrounding a molecular junction affects its charge-transport properties and, therefore, must be chosen with care. In the case of measurements in liquid media, the solvent must provide good solvation, grant junction stability, and, in the case of electrolyte gating experiments, allow efficient electrical coupling to the gate electrodes through control of the electrical double layer. We evaluated in this study the deep eutectic solvent mixture (DES) ethaline, which is a mixture of choline chloride and ethylene glycol (1:2), for single-molecule junction fabrication with break-junction techniques. In ethaline, we were able to (i) measure challenging and poorly soluble molecular wires, exploiting the improved solvation capabilities offered by DESs, and (ii) efficiently apply an electrostatic gate able to modulate the conductance of the junction by approximately an order of magnitude within a ∼1 V potential window. The electrochemical gating results on a Au−VDP−Au junction follow exceptionally well the single-level modeling with strong gate coupling (where VDP is 1,2-di(pyridine-4-yl)ethene). Ethaline is also an ideal solvent for the measurement of very short molecular junctions, as it grants a greatly reduced snapback distance of the metallic electrodes upon point-contact rupture. Our work demonstrates that DESs are viable alternatives to often relatively expensive ionic liquids, offering good versatility for single-molecule electrical measurements.

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Palladium electrochemistry in the choline chloride-urea deep eutectic solvent at gold and glassy carbon electrodes

Cited by 15 publications

References 26 publications

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Study on the Palladium Nucleation and Growth Mechanism in A Deep Eutectic Solvent by Electrochemical Method

Single-Molecule Junction Formation in Deep Eutectic Solvents with Highly Effective Gate Coupling

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Palladium electrochemistry in the choline chloride-urea deep eutectic solvent at gold and glassy carbon electrodes

Cited by 15 publications

References 26 publications

Role of Ionic Solvents in the Electrocatalytic CO2 Conversion and H2 Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Role of Ionic Solvents in the Electrocatalytic CO2 Conversion and H2 Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Study on the Palladium Nucleation and Growth Mechanism in A Deep Eutectic Solvent by Electrochemical Method

Single-Molecule Junction Formation in Deep Eutectic Solvents with Highly Effective Gate Coupling

Contact Info

Product

Resources

About

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents

Role of Ionic Solvents in the Electrocatalytic CO₂ Conversion and H₂ Evolution Suppression: From Ionic Liquids to Deep Eutectic Solvents