Electrochemical impedance spectroscopic (EIS) investigation of the oxygen evolution reaction mechanism of Ti/IrO2+MnO2 electrodes in 0.5m H2SO4 solution

Ye, Zhiguo; HaiBo, Meng; Sun, Dongbai

doi:10.1016/j.jelechem.2008.04.009

Cited by 63 publications

(25 citation statements)

References 23 publications

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“…The effect of this is later seen on the CPE dl which is reduced comparing to the value detected in neutral medium ( Table 1). As depicted in Table 1, it turned out that the value of the R tc is higher in the case of lead in H 2 SO 4 than natural solution, indicating that the lead sulfate layer is more compact and the access of electrolyte ions to the internal layer is stopped [46]. Also, in the case of acidic pH characterized by high R f ; the electrolyte penetrates into the pores of oxide layer [40,47].…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 96%

Interface behavior of PbO2 on pure lead and stainless steel as anode for dye degradation

Elaissaoui

Akrout

Bousselmi

2016

Desalination and Water Treatment

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A B S T R A C TPbO 2 films are electrodeposited by the galvanostatic (G) and pulsed current (P) methods on lead and stainless steel (AS30), respectively. They are used as electrodes for electrochemical degradation of Amaranth dye. The scanning electron microscope, atomic force microscope, and X-ray diffraction analyses revealed the dominance of β-PbO 2 form in two anodes and the absence of the form tet-PbO and PbSO 4 in AS30 substrate that have more amorphous shape and less roughness (200 nm). A poor lead oxide adhesion on AS30 substrate is detected. Cyclic voltammetry results showed that the absence of oxidation peak in the case of AS30/PbO 2 anode is related to the oxidation of PbSO 4 to β-PbO 2 . EIS results demonstrated that the pH influences largely PbO 2 layer. Concerning E123 degradation, 95 and 91% of color removal (82 and 76% of Chemical oxygen demand removals) were achieved using Pb/PbO 2 and AS30/PbO 2 anodes, respectively. In this case, current efficiency has kept relatively a high value assuming less energy consumption.

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Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 96%

Interface behavior of PbO2 on pure lead and stainless steel as anode for dye degradation

Elaissaoui

Akrout

Bousselmi

2016

Desalination and Water Treatment

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“…In the present work, both semicircles should represent faradaic processes since the diameter of both semicircles decreases with an increase in potential. According to Hoseinieh and coworkers 21 and Ye and co-workers, 32 the semicircle related to the coating should be independent of the potential. Therefore, the electrical equivalent circuit (EEC) used in the present work is shown in Figure 7.…”

Section: B Polarization Curvesmentioning

confidence: 97%

“…Spectra showing two semicircles have often been obtained for DSA electrodes in sodium chloride solutions. [19][20][21]32 These authors attribute the high frequency semicircle to the resistance and the capacitance of the coating while the semicircle at lower frequencies is assigned to the capacitance of the double layer, C dl and the charge transfer resistance, R ct . In the present work, both semicircles should represent faradaic processes since the diameter of both semicircles decreases with an increase in potential.…”

Section: B Polarization Curvesmentioning

confidence: 99%

Electrochemical cell design for the impedance studies of chlorine evolution at DSA® anodes

Silva

Dias

Araújo

et al. 2016

Review of Scientific Instruments

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A new electrochemical cell design suitable for the electrochemical impedance spectroscopy (EIS) studies of chlorine evolution on Dimensionally Stable Anodes (DSA ® ) has been developed. Despite being considered a powerful tool, EIS has rarely been used to study the kinetics of chlorine evolution at DSA anodes. Cell designs in the open literature are unsuitable for the EIS analysis at high DSA anode current densities for chlorine evolution because they allow gas accumulation at the electrode surface. Using the new cell, the impedance spectra of the DSA anode during chlorine evolution at high sodium chloride concentration (5 mol dm −3 NaCl) and high current densities (up to 140 mA cm −2 ) were recorded. Additionally, polarization curves and voltammograms were obtained showing little or no noise. EIS and polarization curves evidence the role of the adsorption step in the chlorine evolution reaction, compatible with the Volmer-Heyrovsky and Volmer-Tafel mechanisms. Published by AIP Publishing. [http://dx

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“…Literatures considered the formative reason of the inductance derived from the disordered movement of the charge carriers through the complex microstructure, such as pores, grain boundaries, and cracks of metallic oxide films prepared by thermal decomposition [19][20]. …”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Effect of heat treatment of titanium substrates on the properties of IrO2-Ta2O5 coated anodes

Yan

HaiBo

2011

Rare Metals

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The Ti substrates of IrO 2 -Ta 2 O 5 coated anodes were treated by solid-solution and aging, stress relieving annealing, and recrystallization annealing, and the coatings were prepared by thermal decomposition of a mixture of H 2 IrCl 6 ·6H 2 O dissolved in hydrochloric acid and TaCl 5 dissolved in alcohol. Scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and accelerated life test (ALT) were employed to study the microstructure and electrochemical properties of the anodes. Compared with the anode without heat treatment, the anodes with heat treatment are of higher electrochemical activity and longer accelerated life; especially, the anode with recrystallization annealing treatment has the best electrochemical properties and the longest accelerated life.

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Electrochemical impedance spectroscopic (EIS) investigation of the oxygen evolution reaction mechanism of Ti/IrO2+MnO2 electrodes in 0.5m H2SO4 solution

Cited by 63 publications

References 23 publications

Interface behavior of PbO2 on pure lead and stainless steel as anode for dye degradation

Interface behavior of PbO2 on pure lead and stainless steel as anode for dye degradation

Electrochemical cell design for the impedance studies of chlorine evolution at DSA® anodes

Effect of heat treatment of titanium substrates on the properties of IrO2-Ta2O5 coated anodes

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