The galvanostatic double-pulse method in the study of the kinetics of stepwise electrode reactions

Kopistko, O.A.; Grushina, N.V.

doi:10.1016/s0022-0728(84)80020-0

Cited by 13 publications

(6 citation statements)

References 20 publications

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“…To investigate the anodization reaction kinetics, galvanostatic single-pulse relaxation experiments were performed. [37][38][39] The experiment involves applying a pulsed current of constant magnitude ͑galvanostatic pulse͒ and observing the potential response of the electrochemical system. The potential response of the system to the pulse provides information on the relative speed of the reaction steps, along with the relative concentration of reaction intermediates and how they vary with time.…”

Section: ͓3͔mentioning

confidence: 99%

“…The very nature of the anodization technique used in this work, in which constant current is repeatedly pulsed, enables the observation of reaction kinetics via galvanostatic relaxation throughout the anodization process. Previous reaction kinetic studies [37][38][39][40] are summarized schematically in Fig. 9, which qualitatively illustrates the response of the potential relaxation to a galvanostatic pulse and the concentration of adsorbed intermediates.…”

Section: ͓3͔mentioning

confidence: 99%

“…Such a decaying potential indicates an initial lack of intermediate species after application of the current pulse, which over time increased to a steady-state value. 37,39 The rate-determining step in the dissolution reaction is thus the second step ͑k 2 ͒. 38 For Fig.…”

Section: ͓3͔mentioning

confidence: 99%

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Pulsed Anodization for Control of Porosity Gradients and Interface Roughness in Porous Silicon

James¹,

Keating

Parish³

et al. 2009

J. Electrochem. Soc.

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We present a technique involving the use of pulsed anodization for porous silicon (PS) thin-film fabrication on low doped substrates, for which the interface roughness and porosity gradients usually observed in such films can be eliminated. The work presented includes a detailed characterization of the effects of duty cycle and frequency during pulsed anodization. The study spans pulsing frequencies of 0.1–1000 Hz and duty cycles of 5–50%. The combination of low frequency (0.1 Hz) and low duty cycle (5%) for the pulse train used for anodization produces PS thin films, displaying no measurable interface roughness or porosity gradient. The mechanisms behind the wide variation in available PS thin-film properties with pulsed anodization parameters are analyzed using a galvanostatic technique. The analysis indicates that the inhomogeneity and roughness observed in PS films fabricated on low doped starting wafers are both due to the unstable multistep dissolution kinetics of silicon during PS film formation.

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Section: ͓3͔mentioning

confidence: 99%

Section: ͓3͔mentioning

confidence: 99%

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Pulsed Anodization for Control of Porosity Gradients and Interface Roughness in Porous Silicon

James¹,

Keating

Parish³

et al. 2009

J. Electrochem. Soc.

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“…In voltammetry the response may consist of one, two or three peaks, depending on the stability of intermediates [4,5]. The theory of this type of reactions is developed for the single and double pulse chronoamperometry [6][7][8], chronopotentiometry [9,10], polarography [11][12][13], cyclic voltammetry [14][15][16] and square wave voltammetry [17]. Electrode reactions of bismuth [18][19][20][21][22][23][24][25][26] and antimony [27] were analyzed.…”

Section: Introductionmentioning

confidence: 99%

Theory of square wave voltammetry of three step electrode reaction

Lovrić

Komorsky‐Lovrić

2014

Journal of Electroanalytical Chemistry

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“…They are three successive one-electron charge-transfer steps [4,7]. It has been shown that in perchloric acid the first and the second electron transfer of Bi III reduction are slow rate determining steps [5], probably due to the slow removal of coordinated water [10].…”

Section: Introductionmentioning

confidence: 99%

The Catalysis of the Reduction of BiIII Ions by Methionine

Sykut

Dalmata

Nieszporek³

1998

Electroanalysis

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A multistep reduction of Bi III ions at the dropping mercury electrode in 1M HClO 4 with the addition of methionine was examined using an impedance method in wide potential and frequency ranges. It was found that the standard rate constants and the rate constants of the first electron transfer increase with the concentration increase of methionine. The rectilinear relation k f ¼ f(G) indicates formation of Bi-methionine bridges which facilitate the transfer of electrons across the inner layer.

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The galvanostatic double-pulse method in the study of the kinetics of stepwise electrode reactions

Cited by 13 publications

References 20 publications

Pulsed Anodization for Control of Porosity Gradients and Interface Roughness in Porous Silicon

Pulsed Anodization for Control of Porosity Gradients and Interface Roughness in Porous Silicon

Theory of square wave voltammetry of three step electrode reaction

The Catalysis of the Reduction of BiIII Ions by Methionine

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