A systematic approach toward error structure identification for impedance spectroscopy

Orazem, Mark E.

doi:10.1016/j.jelechem.2003.11.059

Cited by 70 publications

(74 citation statements)

References 41 publications

(53 reference statements)

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“…The regression was weighted by the inverse of the variance of the stochastic part of the measurement. In all conditions the weighted sum of the square of the residuals was below one [30].…”

Section: 6mentioning

confidence: 88%

“…A rigorous fitting procedure was performed. Six replicate measurements for each storage time were carried out, and the error structure was assessed following the method recommended by Agarwal et al [27][28][29] and Orazem [30]. The standard deviation for the real (σ Zr ) and imaginary (σ Z j ) parts of the impedance followed the form proposed by Orazem (see eq.…”

Section: 6mentioning

confidence: 99%

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A Study of the Charge Transport Process at Nickel Hydroxide-Gold Modified Electrodes employing Rotating Disc Electrode Voltammetry and Ac Impedance Measurements

Tucceri

2014

PCHE

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The aim of the present work was study how the charge-transport process of a nickel hydroxide film electrochemically synthesized on a gold substrate is modified when the electrode is stored without use for long time. It was found that nickel hydroxide films deactivate under storage, that is, films become less conductive than immediately prepared ones (nondeactivated). This study was carried out in the context of the Rotating Disc Electrode Voltammetry (RDEV) and Electrochemical Impedance Spectroscopy (EIS) when the modified electrode contacts an electroactive solution and a redox reaction occurs at the Au−Ni(OH) 2 |ectrolyte interface. Variations of anodic limiting currents with the electrode rotation rate, for both nondeactivated and deactivated films in the presence of the electroactive solute deferasirox (4-(3,5-bis(2-hydroxyphenyl)-1,2,4-triazol-1-yl) benzoic acid) allowed one obtaining a charge transport rate across a nickel hydroxide film, which decreases with the increase of the storage time. Interpretation of impedance spectra obtained at potential values corresponding to the anodic limiting currents on the basis of an impedance model that considers an uniform and nonporous nickel hydroxide film deposited in a conductive substrate and no penetration of redox species (deferasirox) from the solution, allowed one obtaining different interfacial resistances and electron and ion diffusion coefficients for the Au−Ni(OH) 2 |ectrolyte system.

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“…The regression was weighted by the inverse of the variance of the stochastic part of the measurement. In all conditions the weighted sum of the square of the residuals was below one [30].…”

Section: 6mentioning

confidence: 88%

Section: 6mentioning

confidence: 99%

A Study of the Charge Transport Process at Nickel Hydroxide-Gold Modified Electrodes employing Rotating Disc Electrode Voltammetry and Ac Impedance Measurements

Tucceri

2014

PCHE

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“…The error structure model employed, in which the standard deviation of the impedance is given as σ = 0.002 |Z|, is in agreement with the error structures obtained under potentiometric modulation. [22,27] The results presented in Figure 1(a) suggest that addition of the random noise does not have visible effects on the impedance data. Figure 1(b) suggests that the ohmic-resistancecorrected phase angle is more sensitive to the added noise, but the effects are small.…”

Section: Synthetic Constant-phase-element Datamentioning

confidence: 92%

Identification of Resistivity Distributions in Dielectric Layers by Measurement Model Analysis of Impedance Spectroscopy

Chen

Nguyen

Orazem

et al. 2016

Electrochimica Acta

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The Voigt measurement model, developed in the 1990s for identification of the error structure of impedance measurements, is shown here to have utility in identifying resistivity distributions that give rise to frequency dispersion. The analysis was validated by application to synthetic data derived from a constant-phase-element model, a power-law distribution of resistivity, and an exponential distribution corresponding to a Young impedance. The application to experimental data obtained from coated aluminum demonstrates its utility for interpretation of impedance measurements.

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“…(3) was based on the CNLS (Complex Nonlinear Squares) method. A rigorous fitting procedure was performed where the error structure was assessed following the references [25][26][27][28]. Continuous lines in Fig.…”

Section: Ac Impedance Measurements and Interpretation Ofmentioning

confidence: 99%

Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes

Tucceri

2014

PCHE

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The aim of this work was to study the effect of prolonged potentiodynamic cycling (PPC) on the conducting properties of poly(oaminophenol) (POAP) film electrodes. PPC reduces strongly the electron transport rate at POAP films. This effect is called herein deactivation. Cyclic Voltammetry (CV), Rotating Disc Electrode Voltammetry (RDEV) and Electrochemical Impedance Spectroscopy (EIS) were employed in this study. The attenuation of the voltammetric response of the polymer with the increase in the number of oxidation-reduction cycles allowed one to define a degree of deactivation. RDEV and EIS were employed to obtain the dependence of some charge-transport parameters on the degree of deactivation of the polymer. RDEV data were interpreted in terms of the electron hopping model. Impedance spectra were analysed on the basis of a model which considers a protonation reaction coupled with a self-exchange process between oxidized and reduced sites. POAP films maintain their conducting properties almost unaltered for about 500 potential cycles at a scan rate of 0.010 Vs −1 . However, a loss of conductivity was observed as the number of potential cycles was extended beyond 500.

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A systematic approach toward error structure identification for impedance spectroscopy

Cited by 70 publications

References 41 publications

A Study of the Charge Transport Process at Nickel Hydroxide-Gold Modified Electrodes employing Rotating Disc Electrode Voltammetry and Ac Impedance Measurements

A Study of the Charge Transport Process at Nickel Hydroxide-Gold Modified Electrodes employing Rotating Disc Electrode Voltammetry and Ac Impedance Measurements

Identification of Resistivity Distributions in Dielectric Layers by Measurement Model Analysis of Impedance Spectroscopy

Effect of prolonged electrode potential cycling on the conduction properties of poly(o-aminophenol) film electrodes

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