On the electrocemical oscillator

Levie, Robert de

doi:10.1016/s0022-0728(70)80343-6

Cited by 89 publications

(6 citation statements)

References 49 publications

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“…Oscillation frequencies diminish with overpotential disappearing at approximately Ϫ1.4 V. This fact can be explained in terms of instability conditions established by an interplay between the series solution resistance and a negative resistance given by the corresponding instantaneous i-E curve at the desorption potential region. A complete study of this effect was reported by De Levie, 29 who analyzed the reduction of In ϩ3 in a mercury cathode in the presence of SCN Ϫ . This latter exerts a similar catalytic effect on the process as Cl Ϫ .…”

Section: Comparison Of Theoretical With Experimental Results-using Th...mentioning

confidence: 95%

Electrodeposition of Indium onto Vitreous Carbon from Acid Chloride Solutions

Muñoz

Saidman

Bessone

1999

J. Electrochem. Soc.

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The initial stages of In electrodeposition onto vitreous carbon were studied in chloride solutions by voltammetric and single potentiostatic pulse techniques. The nucleation process was analyzed in terms of the atomistic theory of nucleation. A model based on nucleation on active centers of vitreous carbon, involving adsorption of Cl− on the initially adsorbed indium atoms, is proposed. Experimental results obtained in a wide potential region were interpreted on the basis of this model and conclusions are drawn for the nucleation mechanism in this medium. © 1999 The Electrochemical Society. All rights reserved.

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Section: Comparison Of Theoretical With Experimental Results-using Th...mentioning

confidence: 95%

Electrodeposition of Indium onto Vitreous Carbon from Acid Chloride Solutions

Muñoz

Saidman

Bessone

1999

J. Electrochem. Soc.

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“…Few studies have been directed towards the investigation of the phenomenon itself. Impedance measurements would appear to offer a promising avenue for approaching this curious behavior, and their relation to electrochemical oscillations has been discussed by DeLevie (3). Apart from some limited admittance measurements by DeLevie and co-workers on the reduction of In(III) in the presence of SCN-(4), we are unaware of prior applications of the technique to the study of electrochemical oscillators.…”

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confidence: 99%

The Anodic Dissolution of Copper into Phosphoric Acid: II . Impedance Behavior

Glarum

Marshall

1985

J. Electrochem. Soc.

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Impedance measurements have been used to study the electrochemical dissolution of copper rotating disk electrodes in phosphoric acid as a function of potential and current density. A space‐charge layer is formed at large over‐potentials. The thickness of this layer is potential dependent, ∼100Å at +1.0V, but independent of current density. Diverse relaxation behaviors are seen at lower potentials. Reactive equivalent‐circuit elements are largely independent of current density, while conductive elements are directly proportional to current density, indicating that the structure of the interface is controlled by the electric potential rather than by kinetics. Current oscillations during dissolution reflect a negative impedance relaxation at low frequencies. This impedance is explained by the dependence of the dissolution process on high mobility hydrogen ions and the coupling of [H+] with electric fields external to the metal surface.

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“…It is well known that electrochemical instabilities and oscillatory behaviour occur in the oxidation of formic acid (29) and how the relative change in coverages change the interfacial potential with respect to the applied potential. De Levie (30) and Koper (31) pointed out the possibility of deducing incipient oscillations from the EIS spectra. More specifically, if the impedance crosses the negative real axis, from third quadrant to fourth quadrant, at a finite frequency, ω H , a Hopf bifurcation is possible.…”

Section: Evaluation Of Impedance Datamentioning

confidence: 99%

A Study of Methanol Oxidation by Dynamic Electrochemical Impedance Spectroscopy

2012

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Methanol oxidation on a smooth polycrystalline platinum electrode is studied by dynamic electrochemical impedance spectroscopy at elevated temperatures employing an autoclave setup. By utilizing custom written software, impedance spectra for all applied electrode potentials are calculated. By increasing the temperature and/or sweep rate, it is shown that the region with three adsorbed species disappears, which is interpreted as less contribution of the parallel pathway at higher temperatures.

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On the electrocemical oscillator

Cited by 89 publications

References 49 publications

Electrodeposition of Indium onto Vitreous Carbon from Acid Chloride Solutions

Electrodeposition of Indium onto Vitreous Carbon from Acid Chloride Solutions

The Anodic Dissolution of Copper into Phosphoric Acid: II . Impedance Behavior

A Study of Methanol Oxidation by Dynamic Electrochemical Impedance Spectroscopy

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