Effect of temperature on the mechanisms and kinetics of cobalt electronucleation and growth onto glassy carbon electrode using reline deep eutectic solvent

Phuong, Thao Dao Vu; Quynh, Luu Manh; Việt, Nguyễn Ngọc; Thong, Le Viet; Sơn, Nguyen Tăng; Pham, Vuong-Hung; Tam, Phuong Dinh; Nguyễn, Văn Hiếu; Manh, Tu Le

doi:10.1016/j.jelechem.2020.114823

Cited by 10 publications

(9 citation statements)

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“…The Ni reduction peaks shift toward more positive potentials, and their current densities increase with the gradual increase of temperature, while the oxidation peak potentials tend to shift to the more negative ones. The result indicates that Ni electrodeposition is favored (in terms of applied potential, E , and current density, j ) with the increase of temperature, which reduces the viscosity of the Ni(II) solution, increases its electrical conductivity, and causes an increase in the kinetic energy and mobility of Ni(II) ions, leading to the positive shift of the reduction peak and an increase in their current density. An important benefit highlighted from this study is that as the temperature increases, the nucleation potential, E nu , decreases; therefore, less energy is required for nickel nucleation.…”

Section: Resultsmentioning

confidence: 99%

“…The potentiostatic step technique has demonstrated to be versatile in detail to analyze the mechanisms and kinetics of electronucleation and growth of metals from solutions. − ,,− Figure shows a family of experimental potentiostatic current density transients ( j – t curves) recorded in the system GCE/50 mM NiCl 2 ·6H 2 O, 250 mM NaCl in EG at a fixed potential and temperature but different Ni(II) concentrations. All these j – t curves exhibit current density maxima, which typically represent the 3D nucleation and growth process, followed by a current density decay that tends to form a steady-state current as described by Palomar-Pardavé et al for current density transients due to the electrochemical nucleation of electroactive centers with diffusion-controlled growth and reduction of a component of the electrolytic bath (i.e., water) on the growing surfaces of these nuclei.…”

Section: Resultsmentioning

confidence: 99%

“…To remove the effect of water, several literature studies have proposed simply the sole use of EG as the (non-aqueous) solvent for the electrodeposition of metals. − However, the knowledge on aspects such as mechanisms and kinetics of the early stage of Ni electrodeposition from EG solutions onto a glassy carbon electrode (GCE) is still insufficient. Previous works dealing with the nucleation and growth phenomena of metals (Co, Al, Cr, Fe, etc.) from DESs have shown that these processes can be studied by means of electrochemical techniques such as cyclic voltammetry (CV) and chronoamperometry (CA).…”

Section: Introductionmentioning

confidence: 99%

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Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl₂·6H₂O Dissolved in Ethylene Glycol

et al. 2022

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This work deals with nickel electronucleation and growth processes onto a glassy carbon electrode from NiCl2·6H2O dissolved in ethylene glycol (EG) solutions with and without 250 mM NaCl as a supporting electrolyte. The physicochemical properties of EG solutions, namely, viscosity and conductivity, were determined for different Ni(II) concentrations. From cyclic voltammetry, it was found that in the absence of the supporting electrolyte, the cathodic efficiency of Ni electrodeposition is about 88%; however, in the presence of the supporting electrolyte, the cathodic efficiency was reduced to 26% due to water (added along the supporting electrolyte) reduction on the growing surfaces of Ni nuclei. This side reaction produced both H2(g) and OH– ions. Part of the former was occluded in Ni, and the latter reacted with Ni(II) ions in EG forming passivation products such as Ni(OH)2(s). Moreover, it was shown that metallic Ni did not catalyze the EG reduction in this system. From chronoamperometry, it was shown that in the absence of the supporting electrolyte, the amount of Ni electrodeposits, for the same overpotential and time, was higher than in the presence of the supporting electrolyte. The j–t plots recorded in the latter system, for different Ni(II) concentrations, were analyzed using a model which involves a contribution due to multiple 3D nucleation and diffusion-controlled growth and another related to the simultaneous reduction of water on the Ni nuclei growing surfaces. This model allows not only the quantification of the Ni nucleation kinetic parameters but also the effective deconvolution of the individual contributions to the total current; thus, from the integration of the j–t plots of these contributions, it was demonstrated that the charge amount of each process depends on the Ni(II) concentration. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, micro-Raman spectroscopy, and X-ray photoelectron spectroscopy revealed the presence of pure Ni nanoparticles electrodeposited on the electrode surface. Moreover, X-ray measurements verified the formation of a high-crystallinity face-centered cubic structure with preferred orientation growth on the ⟨111⟩ direction, which were also corroborated by the magnetic measurement performed in a physical property measurement system.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl₂·6H₂O Dissolved in Ethylene Glycol

et al. 2022

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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%

“…Pd has been electrodeposited on various electrodes containing polymer matrix, porous stainless steel electrode, copper and gold single crystal electrode, graphite substrate [15][16][17]. Electrodeposition of Pd and cobalt on glassy carbon electrode has received some attention by several authors [3,4,18].…”

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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Electrochemical Nucleation and Growth Mechanism of Metals

Ait Layachi,

Moujib,

Khoumri

2024

Electroanalysis

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This review provides a detailed analysis of the current transition observed in the field of electrodeposition of metals. Special emphasis is placed on the mechanism initiated by nucleation followed by diffusion‐controlled growth. The study highlights recent advances, relevant theoretical models, and practical implications of this process. Concrete examples are also discussed to illustrate the application of this method in various industrial and scientific contexts. These promising advances open new perspectives for the optimization of electrodeposition processes, paving the way for innovative applications in various technological sectors.

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Effect of temperature on the mechanisms and kinetics of cobalt electronucleation and growth onto glassy carbon electrode using reline deep eutectic solvent

Cited by 10 publications

References 31 publications

Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl₂·6H₂O Dissolved in Ethylene Glycol

Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl₂·6H₂O Dissolved in Ethylene Glycol

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

Electrochemical Nucleation and Growth Mechanism of Metals

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Effect of temperature on the mechanisms and kinetics of cobalt electronucleation and growth onto glassy carbon electrode using reline deep eutectic solvent

Cited by 10 publications

References 31 publications

Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl2·6H2O Dissolved in Ethylene Glycol

Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl2·6H2O Dissolved in Ethylene Glycol

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

Electrochemical Nucleation and Growth Mechanism of Metals

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Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl₂·6H₂O Dissolved in Ethylene Glycol

Insights into Electronucleation and Electrodeposition of Nickel from a Non-aqueous Solvent Based on NiCl₂·6H₂O Dissolved in Ethylene Glycol