Comparative EIS study of a paste electrode containing zinc powder in neutral and near neutral solutions

Ibriş, Neluţă; Rosca, Julia Claudia Mirza; Santana, a F.J.H.; Visan, Teodor

doi:10.1007/s100080000192

Cited by 8 publications

(3 citation statements)

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“…The electrochemical impedance spectroscopy (EIS) [46] was applied at open circuit potential (E oc ) and at þ0.4 V potential using a PAR 263A potentiostat connected with a PAR 5210 lock-in amplifier. The amplitude of the AC potential was 10 mV and single sine wave measurements at frequencies between 10 À1 and 10 5 Hz were performed for each sample.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical and SEM studies of a new implant bioalloy in physiological electrolytes

Popa

Vasilescu

Drob

et al. 2009

Materials & Corrosion

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A new implant Ti-7Al-3V-2Mo-2Fe alloy was elaborated and its behaviour in Ringer-Brown and Ringer solutions (of different pH values) was studied using cyclic potentiodynamic and linear polarisation, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) with its link energy dispersive X-ray system (EDX). Cyclic potentiodynamic polarisation curves revealed that the Ti-7Al-3V-2Mo-2Fe alloy is self-passivated in Ringer solutions. Pitting corrosion appeared in alkaline Ringer solution but at very electropositive values of the breakdown and pitting protection potentials and it is not possible to develop local corrosion on this alloy, even in extreme functional conditions. EIS spectra at open circuit potential exhibited two phase angles characterising a resistant passive film and some charge transfer reactions. SEM-EDX analysis shows the presence of some aggregates containing complex compounds of calcium, magnesium, phosphor, silicon deposited on the alloy surface.

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Section: Methodsmentioning

confidence: 99%

Electrochemical and SEM studies of a new implant bioalloy in physiological electrolytes

Popa

Vasilescu

Drob

et al. 2009

Materials & Corrosion

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“…The proposed equivalent circuit is shown in Fig. 11, in which CPE1 acts as a pseudo-Warburg impedance because the value of a (0.35-0.37) tends to be 0.5 [20]. The low-frequency semicircle associates with the charge transfer inside the pores, and the inhomogeneity of the pores leads to the depressed arcs, which are also expressed as R ct -CPE2 parallel circuit in the equivalent circuit, as shown in Fig.…”

Section: Eis Of B-doped Pcd Electrodementioning

confidence: 98%

“…The depressed arc in the low-frequency region associates with the electric double layer on the inner surface of the pores, which can be expressed as R c C dl parallel circuit in the equivalent circuit. The charge transfer resistance inside the pores R c increases distinctly and the inhomogeneous porous structure (sizes, shapes, and depths) leads to the frequency dispersion, so the doublelayer capacitance C dl is replaced by a constant phase element (CPE) [18][19][20][21][22][23] whose impedance is formulated by:…”

Section: Eis Of B-doped Pcd Electrodementioning

confidence: 99%

Electrochemical characteristics of boron doped polycrystalline diamond electrode sintered by high pressure and high temperature

et al. 2009

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The bulk B-doped polycrystalline diamond (PCD) electrode in this study was prepared by high-pressure, high-temperature (HPHT) technology. The PCD was sintered under HPHT conditions, using B-doped diamond powders and a metal catalyst as raw materials, then the metal solvent phase was dissolved by aqua regia. The morphology and composition of the PCD were investigated with a scanning electron microscope (SEM), X-ray diffraction (XRD), and energy dispersion spectrum (EDS). The results show that the sintered body possesses a polycrystalline structure with direct diamond-diamond bond and irregularly shaped pores of 1-10 lm distributed on the grain boundaries after the metal solvent phase was removed. The cyclic voltammogram and electrochemical impedance spectroscopy of this B-doped electrode have been investigated. The B-doped PCD electrode exhibits stable electrochemistry in a KCl support solution over a wide potential range. The quasi-reversible reaction occurs on the electrode for the [Fe(CN) 6 ] 3-/4-couples. The electrode process combines the diffusion-controlled mass transport plus the kinetic process. The electrochemical impedance spectroscopy (EIS) analysis shows the porous structure characteristic of the PCD electrode.

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Electrochemistry of Zinc

Stroka

Maksymiuk

Galus

2006

Encyclopedia of Electrochemistry

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The sections in this article are Double‐layer Properties of Zinc Electrodes Pc ‐Zinc in Aqueous Solutions Zn Single Crystals in Aqueous Solutions Electrochemical Properties and Kinetics of the Zn ( II )/ Zn ( Hg ) and Zn ( II )/ Zn Systems Electrochemistry in Aqueous Solutions Electrochemistry in Water‐organic Solvent Mixtures Electrochemistry in Nonaqueous Solvents The Influence of Organic Compounds on the Electrode Processes The Electrochemical Properties of the Zinc Complexes Properties of Zinc Oxide Electrode Electrode Processes in Molten Salts Deposition and Underpotential Deposition of Zn on Solid Electrodes Underpotential Deposition of Zinc Zn UPD on Pt Zn UPD on Au Zinc Electrodeposition on Solid Electrodes Electrodeposition on Zn Electrodes Electrodeposition on Other Electrodes Passivation and Corrosion of Zinc Anodic Dissolution and Passivation of Zinc Corrosion Applied Electrochemistry Batteries Ni – Zn Cells Zn –Air Batteries Zn – Mn O 2 Batteries Zn – Ag Batteries Other Cells Electrowinning Zinc Electroplating Zinc Alloys Electroplating Electrochemical Sensors and Modified Electrodes Potentiometric Sensors Voltammetric/Amperometric Sensors Modified Electrodes

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Comparative EIS study of a paste electrode containing zinc powder in neutral and near neutral solutions

Cited by 8 publications

References 0 publications

Electrochemical and SEM studies of a new implant bioalloy in physiological electrolytes

Electrochemical and SEM studies of a new implant bioalloy in physiological electrolytes

Electrochemical characteristics of boron doped polycrystalline diamond electrode sintered by high pressure and high temperature

Electrochemistry of Zinc

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