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Journal articles on the topic 'Anodic dissolution currents'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Shepida, M. V., M. A. Sozanskyi, Yu V. Sukhatskiy, A. S. Mazur, and О. І. Kuntyi. "Sonoelectrochemical synthesis of silver nanoparticles in polyvinylpyrrolidone solutions." Chemistry, Technology and Application of Substances 4, no. 1 (2021): 82–87. http://dx.doi.org/10.23939/ctas2021.01.082.

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The results of investigations of the influence of main parameters (surfactant concentration and temperature) on the synthesis of silver nanoparticles (AgNPs) by the sonoelectrochemical method in polyvinylpyrrolidone (PVP) solutions by cyclic voltammetry (CVA) are presented. It is shown that the ultrasonic field (22 kHz) leads to an increase in the anodic and cathodic currents by ~30 %. A scheme of the AgNPs formation has been proposed, which includes the following main processes: 1) dissolution of sacrificial silver anodes at E = 0.2...1.0 V with the formation of [AgPVP]+ complex ions; 2) cath

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2

Drazic, Dragutin, Jovan Popic, B. Jegdic, and D. Vasiljevic-Radovic. "Electrochemistry of active chromium, part IV: Dissolution of chromium in deaerated sulfuric acid." Journal of the Serbian Chemical Society 69, no. 12 (2004): 1099–110. http://dx.doi.org/10.2298/jsc0412099d.

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Chromium dissolution in aqueous sulfuric acid solutions in the pH range 0.5 ?3 was studied electrochemically by the potentiostatic or very slow potentiodynamic method, and by the analyses of the Cr ion concentrations in the electrolyte formed during the experiments. It was shown that the electrochemical anodic dissolution follows a common Tafel line with a slope of ca. 120 mVdec-1, independent of the solution pH and the hydrodynamics while the passivation potentials and passivation currents were independent on hydrodynamics but strongly dependent on the pH. In parallel with the electrochemical

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3

Scheer, Kilian M., Meredith Tulloch, Ines Hamam, Jeffin James Abraham, Michel B. Johnson, and Michael Metzger. "Anodic Dissolution of the Aluminum Current Collector in Lithium-ion Cells with LiFSI, LiPF₆, and LiBF₄." Journal of The Electrochemical Society 172, no. 1 (2025): 010511. https://doi.org/10.1149/1945-7111/ada641.

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Anodic dissolution (often referred to as corrosion) of the positive electrode aluminum current collector can be a limiting factor for the performance, lifetime, and safety of lithium-ion cells. The superior performance of lithium bis(fluorosulfonyl)imide (LiFSI) salt, especially in high-temperature lithium-ion cells, motivates this study of the Al current collector corrosion in electrolytes with and without LiFSI. With pure lithium hexafluorophosphate (LiPF6) and lithium tetrafluoroborate (LiBF4) or LiFSI blends of these salts, only minor Al corrosion currents were found in cyclic voltammetry

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4

TUDOR, ADRIAN IONUȚ, and RAZVAN GEORGE RIPEANU. "BEM simulation on the influence of dispersion currents on buried pipes." Journal of Engineering Sciences and Innovation 6, no. 3 (2021): 335–48. http://dx.doi.org/10.56958/jesi.2021.6.3.10.

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The aim of this paper is to provide a method for modelling the influence of stray currents on buried pipes, using as calculation the boundary element method (BEM), using the module dedicated to corrosion in COMSOL Multiphysics software, which allows investigation both macroscopically and microscopically of corrosion processes. Dispersion currents, often called stray currents, are considered currents that follow little-known trajectories in the ground, but which can affect underground gas pipelines. Their sources are external to the pipes and contribute to the lowering of the anodic potential u

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5

Gudic, Senka, Ladislav Vrsalovic, Ana Radeljic, et al. "Comparison of corrosion behaviour of copper and copper alloys in aqueous chloride solution." Chemical Industry and Chemical Engineering Quarterly, no. 00 (2021): 7. http://dx.doi.org/10.2298/ciceq200701007g.

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A comparative corrosion study of Cu and Cu-Al, Cu-Al-Ni, Cu-Al-Mn, and Cu-Al-Mn-Ni in 0.5 mol dm-3 NaCl solution was performed using an open circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy measurements (EIS). Scanning electron microscopy/Energy-dispersive X-ray spectroscopy (SEM/EDS) analysis was used to evaluate corrosive damage on the sample surface after polarization measurements. The reported results suggest that the alloying elements have reduced cathodic and anodic current densities in the Tafel region, increased anodic currents at higher anodi

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6

Virtanen, Sannakaisa. "Respirometric Studies on Transpassive Dissolution." ECS Meeting Abstracts MA2024-02, no. 15 (2024): 1626. https://doi.org/10.1149/ma2024-02151626mtgabs.

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Recently, we introduced respirometric methods for real-time monitoring of corrosion, both for atmospheric corrosion [1] and immersion conditions [2]. The approach is based on monitoring the rate of the cathodic reactions with help of different types of sensors; this enables to track the O2 reduction reaction and the H2 evolution reaction simultaneously. The set-ups have been used to study different corrosion scenarios under free corrosion conditions. Even more recently, the respirometric setups were coupled with electrochemistry [3, 4], enabling the corrosion cases to be studied not only at op

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7

Shepida, Mariana, Orest Kuntyi, Martyn Sozanskyi, and Yuriy Sukhatskiy. "Sonoelectrochemical Synthesis of Antibacterial Active Silver Nanoparticles in Rhamnolipid Solution." Advances in Materials Science and Engineering 2021 (June 14, 2021): 1–9. http://dx.doi.org/10.1155/2021/7754523.

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The results of studies of the synthesis of AgNPs colloidal solutions by cyclic voltammetry (E from +1.0 to −1.0 V) in rhamnolipid (RL) solutions and the use of soluble anodes in the ultrasound field (22 kHz) are presented. It is shown that the algorithm of anodic dissolution—reduction of Ag(I)—nucleation, and formation of AgNPs makes it possible to obtain nanoparticles with the size from 1 nm to 3 nm. It was found that with an increase in the RL concentration from 1 g/L to 4 g/L, the anodic and cathodic currents increase as well as the rate of AgNPs formation, respectively. The rate of nanopar

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8

Sherif, El-Sayed M., and Abdulhakim A. Almajid. "Anodic Dissolution of API X70 Pipeline Steel in Arabian Gulf Seawater after Different Exposure Intervals." Journal of Chemistry 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/753041.

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The anodic dissolution of API X70 pipeline steel in Arabian Gulf seawater (AGSW) was investigated using open-circuit potential (OCP), electrochemical impedance spectroscopy (EIS), cyclic potentiodynamic polarization (CPP), and current-time measurements. The electrochemical experiments revealed that the X70 pipeline steel suffers both general and pitting corrosion in the AGSW solution. It was found that the general corrosion decreases as a result of decreasing the corrosion current density (jcorr), corrosion rate (Rcorr) and absolute currents as well as the increase of polarization resistance o

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9

El-Sayed, Abdel-Rahman, Hossnia S. Mohran, and Hoda Abdel Shafy Shilkamy. "Role of Indium Alloying with Lead as a Means to Reduce the Passivation Phenomena in Lead/Acid Batteries." International Journal of Electrochemistry 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/932654.

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The influence of indium content on the anodic behaviour of Pb-In alloys in 4 M H2SO4solution is investigated by potentiodynamic, potentiostatic, chronopotentiometric, and cyclic voltammetric techniques. The composition and microstructure of the corrosion layer on Pb-In alloys are characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy analysis (EDX), and scanning electron microscopy (SEM). The potentiodynamic and chronopotentiometric curves show that the anodic behavior of all investigated electrodes exhibits active/passive transition. The active dissolution (except for

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10

Trifanov, V. I., L. N. Nikitina, K. V. Saraeva, D. I. Malizhonok, and I. V. Trifanov. "Vibration anode-abrasive polishing of channels of small cross section." Journal of Physics: Conference Series 2373, no. 2 (2022): 022068. http://dx.doi.org/10.1088/1742-6596/2373/2/022068.

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Abstract The mechanism of anodic dissolution of microroughnesses in the combined method of anodic-abrasive vibratory polishing with magnetic-abrasive electrically polarized charged grains of channels of pipes of small cross section made of non-magnetic materials is presented. Materials that can be used as magnetic-abrasive composite grains such as Fe3C, FeB, FeB2, etc. or magnetic NbC-Fe modified with graphene, carbon nanotubes, or a combination thereof have been selected. A passivating electrolyte used in this combined method of vibration anode-abrasive polishing, for example, 3% NaNO3 + (3-6

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Kuznetsova, O. G., A. M. Levin, S. V. Konushkin, O. I. Tsybin, and A. O. Bol'shikh. "Elektrokhimicheskaya pererabotka otkhodov tyazhelykh vol'framovykh splavov v rastvorakh karbonata ammoniya." Микология и фитопатология, no. 1 (December 15, 2023): 9–15. http://dx.doi.org/10.31857/s0869573323010020.

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The electrochemical behavior of tungsten and the VNZHK alloy (wt. %: W 90; Ni 7.2; Fe 1.8; Co 1) in solutions of (0.5—1.5 M) ammonium carbonate was investigated by linear voltammetry in a potentiodynamic mode. An increase in the maximum anodic density of the oxidation current of tungsten and the VNZHK alloy was revealed with an increase in the ammonium carbonate concentration. The process of electrochemical dissolution of the VNZHK alloy waste in a 1.0 M solution of ammonium carbonate was investigated by galvanostatic electrolysis, as well as electrolysis under the action of a sinusoidal alter

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12

Böttcher, Falko, Ingo Schaarschmidt, Jan Edelmann, and Andreas Schubert. "Simulation-Assisted Tool Design for Pulsed Electrochemical Machining of Magnetic Shape-Memory Alloys." Journal of Manufacturing and Materials Processing 8, no. 2 (2024): 46. http://dx.doi.org/10.3390/jmmp8020046.

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Shape-memory alloys set high demands on the production technologies being used. During cutting, continuous heat input and mechanical stress have an undesirable influence on the shape-memory effect. Pulsed electrochemical machining (PECM), which is based on anodic dissolution, enables force-free machining without thermomechanical influence on the edge-zone properties of the workpiece. Depending on the desired geometry, the development of a customized PECM fixture is necessary. The design of the fixtures is often based on the experiences of the designers and manufacturers, which often results in

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13

José, Adrián Tamayo-Sepúlveda, Alejandro Vásquez-Arroyave Ferley, and Andrés Calderón-Gutiérrez Jorge. "Effect of aeration on the Tafelian behavior of the corrosion of carbon steel in acid sulfate medium." Revista Facultad de Ingeniería –redin-, no. 83 (June 26, 2017): 36–42. https://doi.org/10.17533/udea.redin.n83a05.

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This study presents a corrosion analysis of carbon steel by electrochemical polarization tests on a rotating disk electrode at several aeration and hydrodynamic conditions in solution 0.2 mol L-1 K2SO4 at pH 3. The reactions involved in the dissolution of the steel are analyzed by studying the Tafel regions of the polarization curves, confirming that the dissolved oxygen plays a predominant role in the corrosion of the metal. The corrosion rate was 35 times higher in natural aeration conditions than in the deaerated medium. Under natural aeration conditions, it is not possible to make a simple

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14

Schoenleber, Jonathan, Lucas Chachay, Goulven Janod, et al. "Porous Copper Layer Development by Dynamic Hydrogen Bubble Template for Power Modules Assembling by Thermocompression." ECS Meeting Abstracts MA2023-01, no. 22 (2023): 1576. http://dx.doi.org/10.1149/ma2023-01221576mtgabs.

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Copper is the most widely used materials for microelectronics applications due to their electrical and thermal conduction properties, and in several applications, thick and porous layers are requested. With increased aircraft electrification, there is a need of extremely high-power converters in the power electric chain, interfacing the bus and the electric motor. The COPERPACK project (COPPER based PACKaging for direct cooled power module ANR-19-CE05-0011) aims to module assembling by thermocompression, which requested the elaboration of thin nanoporous copper film to be placed between chips

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15

Wohner, Natalie, and Lloyd H. Hihara. "Galvanic and Local Corrosion of Aluminum Alloy 6061-T6 Coupled to Non-Passivating and Passivating Alloys." ECS Meeting Abstracts MA2024-02, no. 17 (2024): 1714. https://doi.org/10.1149/ma2024-02171714mtgabs.

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Marine and aerospace structures sometimes combine lightweight aluminum alloys with dissimilar metals to optimize mechanical performance and reduce costs. Unfortunately, the exposure of such dissimilar couples in a harsh environment can cause severe corrosion damage to the aluminum structure due to its position in the galvanic series. Corrosion of Aluminum Alloy (AA) 6061-T6 coupled to non-passivating and passivating alloys was studied to elucidate galvanic effects on local corrosion. In this work, local and galvanic corrosion were quantified, the effects of cathode material on local electrolyt

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16

Neto, Silva, and João Cirilo. "Development of a Prototype of Electrochemical Machining." Advanced Materials Research 223 (April 2011): 940–49. http://dx.doi.org/10.4028/www.scientific.net/amr.223.940.

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Electrochemical machining (ECM) is the controlled removal of material by anodic dissolution in an electrolytic cell in which the workpiece is the anode and the tool is the cathode. The ECM presents the advantages: three-dimensional surfaces with complicated profiles can be easily machined in a single operation, irrespective of the hardness and strength of the material. ECM offers a higher rate of metal removal as compared to traditional and nontraditional methods, especially when high machining currents are employed. There is no wear of the tool, which permits repeatable production. This work

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17

Khezri, Ramin, Soraya Hosseini, Abhishek Lahiri, et al. "Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive." International Journal of Molecular Sciences 21, no. 19 (2020): 7303. http://dx.doi.org/10.3390/ijms21197303.

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Zinc–air batteries (ZABs) offer high specific energy and low-cost production. However, rechargeable ZABs suffer from a limited cycle life. This paper reports that potassium persulfate (KPS) additive in an alkaline electrolyte can effectively enhance the performance and electrochemical characteristics of rechargeable zinc–air flow batteries (ZAFBs). Introducing redox additives into electrolytes is an effective approach to promote battery performance. With the addition of 450 ppm KPS, remarkable improvement in anodic currents corresponding to zinc (Zn) dissolution and limited passivation of the

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18

Schoenleber, Jonathan, Marie-Pierre Gigandet, Baptiste Fedi, and Jean-Yves Hihn. "Thick Copper Layer Growth By Dynamic Hydrogen Bubble Template Using Continuous and Pulse Currents." ECS Meeting Abstracts MA2022-01, no. 23 (2022): 1168. http://dx.doi.org/10.1149/ma2022-01231168mtgabs.

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Copper is the most widely used materials for microelectronics applications due to their electrical and thermal conduction properties, and in several appplications, thick and porous layers are requested. Different possibilities still exists such as copper-zinc or copper-manganese electrodeposition followed by an anodic dissolution, but the faster and simpler way resides in electroforming deposition made by Dynamic Hydrogen Bubble Template (DHBT) [1]. This process works in unusual potentials and current densities where the competition between hydrogen discharge (commonly avoided) and copper redu

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19

Богдашкина, Н.Л., М.В. Герасимов, Р.Х. Залавутдинов та ін. "Влияние добавок сульфата никеля в электролиты для микродугового оксидирования на структуру, состав и свойства покрытий, формируемых на титане". Elektronnaya Obrabotka Materialov 53, № 5 (2017): 8–14. https://doi.org/10.5281/zenodo.1053965.

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The effect of nickel sulfate additives in acid and alkali electrolytes for microarc oxidation on the structure, composition and properties of coatings formed on titanium of VT1-0 grade with the purpose of low soluble titanium anodes creating is investigated. A possibility of nickel (nickel oxide) incorporating into the coatings is established. The X-ray phase analysis showed that the coatings contain nickel oxide β-NiO with a cubic lattice, TiO<sub>2</sub> in the form of rutile, and also SiO<sub>2 </sub>in the form of a high-temperature β-cristobalite. The greatest thickness and content of nic

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20

Kim, Hee-Eun, Haley Vapnik, and Xiao Su. "Selective Recovery of Cerium over Lanthanum Using Alternating Current Electro-Precipitation for Sustainable Rare Earth Elements Separation." ECS Meeting Abstracts MA2025-01, no. 28 (2025): 1560. https://doi.org/10.1149/ma2025-01281560mtgabs.

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Rare earth elements (REEs), particularly cerium (Ce) and lanthanum (La), play a critical role in modern technologies but face significant supply challenges due to limited resources and increasing demand. Traditional separation technologies, such as liquid-liquid extraction and ion exchange, often struggle with low selectivity and high waste generation. In this study, we developed a novel alternating current (AC) electro-precipitation strategy to selectively recover cerium from lanthanum in multicomponent waste streams. By leveraging the redox activity of Ce and the distinct solubility differen

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21

Rakovskaya, Е. G., N. G. Zanko, and L. К. Yagunova. "Determination of the hydrogen content in surface layers of U8A steel using high frequency currents." Industrial laboratory. Diagnostics of materials 87, no. 7 (2021): 44–48. http://dx.doi.org/10.26896/1028-6861-2021-87-7-44-48.

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An increase in the strength of steels is associated with a decrease in the content of impurities, which have a negative effect on the mechanical properties of steels. One of those impurities is hydrogen. It is known that at ultrahigh frequencies, due to the peculiarities of the distribution of alternating current over the cross section of a metal conductor, the conductivity is carried out by a thin surface layer (skin-effect). We present the results of using high-frequency currents for determination of the hydrogen content in a metal. The absorption of hydrogen by thin subsurface layers of ste

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22

Schoenleber, Jonathan, Goulven Janod, Lucas Chachay, et al. "Thermal Efficiency Evaluation after Thermocompression of Copper Layer Obtained By Dynamic Hydrogen Bubble." ECS Meeting Abstracts MA2023-02, no. 20 (2023): 1210. http://dx.doi.org/10.1149/ma2023-02201210mtgabs.

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With the increase in engines electrification, especially in aircraft future developments, there is a need of extremely high-power converters in the power electric chain, interfacing the electrical network and the electric motors. The COPPERPACK project (COPPER based PACKaging for direct cooled power module ANR-19-CE05-0011) aims to module assembling by thermocompression, which requests the elaboration of thin nanoporous copper films to be placed between chips and metallized ceramic substrates. Different possibilities exist and have been tested all along the project, such as copper-zinc or copp

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23

Kuntyi, Оrest, Galyna Zozulya, Mariana Shepida, et al. "CO2 electroreduction in aqueous and acetonitrile solutions on porous cathode fabricated by anode dezincification of CuZn." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 5 (October 2023): 55–63. http://dx.doi.org/10.32434/0321-4095-2023-150-5-55-63.

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The rates of the CO2 electrochemical reduction were determined on porous cathodes formed by electrochemical dealloying of CuZn under different regimes of selective anodic dezincification of brass. It was established that the formation of a porous surface proceeds in two following stages: 1) the dissolution of Zn from the CuZn mainly along the grain boundaries with the formation of submicron crevices between them, and 2) electrochemical dezincification of brass grains and formation of nanopores. The zinc content in the nanoporous copper surface is less than 1%. It was proved that anodically dez

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Bisen, Omeshwari Yadorao, Max Baumung, Florian Schönewald, C. a. Volkert, and Marcel Risch. "LiMn₂O₄as a Model System to Understand the Mn Dissolution Mechanism during Water Oxidation." ECS Meeting Abstracts MA2023-02, no. 49 (2023): 3439. http://dx.doi.org/10.1149/ma2023-02493439mtgabs.

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LiMn2O4 as a model system to understand the Mn dissolution mechanism during water oxidation Omeshwari Bisen1,2, M. Baumung1,2, F. Schönewald2, C. A. Volkert2, M. Risch1,2 1 Nachwuchsgruppe Gestaltung des Sauerstoffentwicklungsmechanismus, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1,14109 Berlin, Germany 2 Institut für Materialphysik, Georg-August-Universität Göttingen, Germany Email: omeshwari.bisen@helmholtz-berlin.de The water splitting provides an attractive avenue for chemical energy storage by producing the green hydrogen, but it suffers from the ineffi

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Jegdic, Bore, Dragutin Drazic, and Jovan Popic. "Influence of chloride ions on the open circuit potentials of chromium in deaerated sulfuric acid solutions." Journal of the Serbian Chemical Society 71, no. 11 (2006): 1187–94. http://dx.doi.org/10.2298/jsc0611187j.

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Open circuit potential measurements and cyclic voltammetry of chromium in deaerated aqueous H2SO4 solution of pH 1 without and containing NaCl in the concentration range 0.5 - 4 M revealed that chromium exhibits two stable open circuit potentials having the character of a Wagner-Traud corrosion potential. One, E corr.1, was established on the passive surface formed by exposing Cr previously to air or passivated potentiostacially in a controlled manner, and the second one, E corr,2, at the bare Cr surface obtained by prolonged cathodic activation. There is a small difference in the E corr,1 val

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26

Kuznetsov, Yu I., N. P. Andreeva, and M. O. Agafonkina. "Inhibition of metal corrosion in neutral aqueous solutions by succinic acid salts." International Journal of Corrosion and Scale Inhibition 13, no. 2 (2024): 1322–36. http://dx.doi.org/10.17675/2305-6894-2024-13-2-36.

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The adsorption, protective and passivating effect of sodium succinate and a blend of sodium alkenylsuccinates SKAP-25 on the oxidized surface of copper, copper-nickel alloy MNZh5-1 and low-carbon steel St3 in a neutral chloride solution were studied. The free adsorption energy (–ΔG0a,max) values for all studied metals suggest chemisorption interaction of these organic anion with oxidized metals surfaces: (–ΔG0a,max) for St3 60.2 kJ/mol, for copper 77.4 kJ/mol and for copper alloy 89.3 kJ/mol. Sodium succinate is able to stabilize the passive state of the MNZh5-1 alloy in a neutral chloride buf

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Mairhofer, Katharina, Silvia Larisegger, and Guenter Fafilek. "Clarification of the Reaction Mechanism of the Photoassisted Anodic Oxidation of SiC in a Newly Developed Inverted Rotating Disk Electrode Cell Setup." ECS Meeting Abstracts MA2023-01, no. 48 (2023): 2545. http://dx.doi.org/10.1149/ma2023-01482545mtgabs.

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Due to the distinctive chemical and physical properties of silicon carbide (SiC), interest in the material as a substrate for semiconductor industry has risen significantly during the past two decades. As a wide bandgap semiconductor SiC is known to be highly chemically inert. Still, under specific conditions SiC takes part in a number of electrochemical reactions that lead to a rapid oxidation of the surface. The goal of this work is to understand the fundamental factors driving this process for n-type SiC crystals in aqueous electrolytes. In alkaline solutions, the photoelectrochemical behav

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Mairhofer, Katharina, Silvia Larisegger, and Guenter Fafilek. "A Newly Developed Inverted Rotating Disk Electrode (IRDE) Setup for the Investigation of Photoelectrochemical Reactions." ECS Meeting Abstracts MA2022-01, no. 45 (2022): 1887. http://dx.doi.org/10.1149/ma2022-01451887mtgabs.

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A new setup for an inverted rotating disk electrode (IRDE) was developed for the investigation of photoassisted or photoelectrochemical processes involving mass transfer reactions, as in electrodeposition or etching processes. In this setup, rotation of the disk electrode is achieved by magnetic coupling between a driver magnet (i.e. a magnetic stirrer) and the follower magnet included in the sample holder. For photoelectrochemical experiments, the cell allows a homogeneous illumination and removal of gaseous reaction products, while still providing leak tightness. In this way, controlled flow

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Strebl, Michael P., Mark P. Bruns, and Sannakaisa Virtanen. "(Corrosion Division Morris Cohen Graduate Student Award) Respirometric Monitoring of Corrosion." ECS Meeting Abstracts MA2024-02, no. 15 (2024): 1641. https://doi.org/10.1149/ma2024-02151641mtgabs.

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Accurate measurement of the corrosion rate of metals and alloys under realistic exposure conditions is crucial for the elucidation of corrosion mechanisms, the development of new corrosion protection measures, and for reliable corrosion prediction. A respirometric approach to monitor corrosion rates based on quantifying the rates of the main cathodic reactions during corrosion is presented. With the proposed gravimetric, manometric, or flow cell experimental setups it is possible to follow the rates of the H2 evolution reaction (HER), the O2 reduction reaction (ORR), or both cathodic reactions

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Tsarev, A. V., N. Zh Dikopova, E. V. Ippolitov, et al. "The effect of anodic dissolution of various types of electrodes on the antibacterial effect during transcanal endodontic direct current exposure." Medical alphabet 1, no. 1 (2023): 28–32. http://dx.doi.org/10.33667/2078-5631-2023-1-28-32.

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The aim of the work was to study the antioxidant efficiency of anodic dissolution of silver-copper and copper electrodes, cases of near-canal endodontic effects in Tocom disease, in relation to mixed cultural transgenic pathogens infected with root diseases when examining chronic forms of pulpitis. The results of the study showed that the anodic dissolution of both silver-copper and copper electrodes has a pronounced and, in general, unidirectional antibacterial effect. It was found that the anodic dissolution of the copper electrode showed a more pronounced effect on mixed cultures of pathoge

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Sato, Ryo, Terumasa Kuge, Shuji Nakanishi, and Yoshiharu Mukouyama. "Simple Direct Alternating Current Battery Using Iron Electrodes." ECS Meeting Abstracts MA2024-02, no. 67 (2024): 4584. https://doi.org/10.1149/ma2024-02674584mtgabs.

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Alternating current (AC) is currently used as a power source for a wide variety of electronic and electrical devices. Direct AC batteries, which generate AC without external devices, are expected to find a variety of applications. Despite the development of various chemical batteries, direct AC batteries with this capability have not been reported. To realize a direct AC battery, the current flow between the two electrodes needs to be spontaneously and repeatedly reversed. In other words, the electrodes of the battery need to alternately undergo oxidation and reduction reactions. On the other

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Bitursyn, S., A. Baeshov, N. Shertayeva, M. Sarbayeva, and K. Kerimbaeva. "ELECTROCHEMICAL DISSOLUTION OF A ZINC ELECTRODE POLARIZED BY ALTERNATING CURRENT IN A NEUTRAL MEDIUM (NA2SO4)." BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series 142, no. 1 (2023): 9–21. http://dx.doi.org/10.32523/2616-6771-2023-142-1-9-21.

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This article discusses the electrochemical dissolution of zinc sulfate solution, sodium registration method potendinamicheskih polarization curves. It has been found that when the anodic dissolution of zinc into the solution as divalent ions, and further by reacting with water formed by hydrolysis of zinc hydroxide , postponing which generates on the electrode surface passivation layer . With increasing pH from 2 to 5 occurs the dissolution rate of zinc reduction. At pH 10, zinc oxidation proceeds with a large over potential, however due form hydroxo metal electrode dissolves at the same rate.

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Bitursyn, S., A. Baeshov, N. Shertayeva, M. Sarbayeva, and K. Kerimbaeva. "ELECTROCHEMICAL DISSOLUTION OF A ZINC ELECTRODE POLARIZED BY ALTERNATING CURRENT IN A NEUTRAL MEDIUM (NA2SO4)." BULLETIN of L.N. Gumilyov Eurasian National University. CHEMISTRY. GEOGRAPHY. ECOLOGY Series 142, no. 1 (2023): 7–19. http://dx.doi.org/10.32523/2616-6771-2023-142-1-7-19.

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This article discusses the electrochemical dissolution of zinc sulfate solution, sodium registration method potendinamicheskih polarization curves. It has been found that when the anodic dissolution of zinc into the solution as divalent ions, and further by reacting with water formed by hydrolysis of zinc hydroxide , postponing which generates on the electrode surface passivation layer . With increasing pH from 2 to 5 occurs the dissolution rate of zinc reduction. At pH 10, zinc oxidation proceeds with a large over potential, however due form hydroxo metal electrode dissolves at the same rate.

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34

Vadym, Kovalenko, and Kotok Valerii. "Investigation of the anodic behavior of w-based superalloy for electrochemical selective treatment." Eastern-European Journal of Enterprise Technologies 6, no. 12 (108) (2020): 55–60. https://doi.org/10.15587/1729-4061.2020.218355.

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W-based superalloys are widely used as elements of drilling equipment, high-speed steel cutting tools, or penetrators for armor-piercing munitions. Used or broken superalloy products are valuable waste that can be recycled to recover valuable components. The most economically and technologically viable method for recycling superalloy scrap is a selective treatment with the dissolution of the binder metal and the production of non-oxidized tungsten powder. The aim of this work was to determine the possibility of anodic treatment of the VNZh90 superalloy scrap with the selective dissolution of t

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Miyata, Yoshikazu, Yuki Kuwahara, Shukuji Asakura, Tadashi Shinohara, Takao Yakou, and Keiichi Shiimoto. "Anodic Dissolution of Spheroidal Graphite Cast Iron with Different Pearlite Areas in Sulfuric Acid Solutions." International Journal of Corrosion 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/741378.

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The rate equation of anodic dissolution reaction of spheroidal graphite cast iron in sulfuric acid solutions at 298 K has been studied. The cast irons have different areas of pearlite. The anodic Tafel slope of 0.043 V decade−1and the reaction order with respect to the hydroxyl ion activity of 1 are obtained by the linear potential sweep technique. The anodic current density does not depend on the area of pearlite. There is no difference in the anodic dissolution reaction mechanisms between pure iron and spheroidal graphite cast iron. The anodic current density of the cast iron is higher than

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Katiyar, Prvan Kumar, Navneet Singh Randhawa, Jhumki Hait, Ranajit Kumar Jana, K. K. Singh, and T. R. Mankhand. "Anodic Dissolution Behaviour of Tungsten Carbide Scraps in Ammoniacal Media." Advanced Materials Research 828 (November 2013): 11–20. http://dx.doi.org/10.4028/www.scientific.net/amr.828.11.

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In the present paper, potentiodynamic studies of WC scrap have been carried out as these studies give better idea about the anodic dissolution behaviour of the scrap material to recover the metal values. However, it has been seen that anodic passivation retards the dissolution of the scrap and adversely affects the recovery of metals. To minimize the passivity and to increase the anodic dissolution, some chemicals are often used as additives. Two different electrolytes namely hydrochloric acid and aqueous ammonia at varying concentrations had been employed for the above studies. The additives

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Ruel, F., P. Volovitch, L. Peguet, A. Gaugain, and K. Ogle. "On the Origin of the Second Anodic Peak During the Polarization of Stainless Steel in Sulfuric Acid." Corrosion 69, no. 6 (2013): 536–42. http://dx.doi.org/10.5006/0820.

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The origins of the second anodic current peak in polarization curves of AISI 430 (UNS S43000) stainless steel in deaerated 0.1 M sulfuric acid (H2SO4) have been investigated by potentiodynamic polarization and atomic emission spectroelectrochemistry (AESEC). The elemental dissolution rates of Fe, Cr, Ni, Cu, and Mn were measured in real time during linear potential sweep voltammetry, revealing the formation and dissolution of a copper-rich corrosion product layer. The deposition and subsequent dissolution of this copper layer is proposed to be the main cause of the second anodic current peak.

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Stankovic, Slavka, Branimir Grgur, Nedeljko Krstajic, and Milan Vojnovic. "Kinetics of the zinc anodic dissolution reaction in near neutral EDTA solutions." Journal of the Serbian Chemical Society 68, no. 3 (2003): 207–18. http://dx.doi.org/10.2298/jsc0303207s.

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Polarization curves of the anodic dissolution reaction of zinc were determined in EDTA solutions of different total molar concentrations (0.05 0.10, 0.15 and 0.20 mol dm-3), the pH values of which were systematically varied (pH 3.0 ? 10.0). The Tafel slopes of the anodic polarization curves are close to 40 mV dec-1 at lower current densities (10-5 ? 5x10-4 A cm-2) while at higher current densities (5x10-4 ? 10-2 A cm-2) the slopes are in the range of 60 ? 120 mV dec-1. The order of the anodic reaction determined from the anodic polarization curves at lower current densities are: z+(H+) ?? 1/2

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Nesic, Srdjan, Negar Moradighadi, Huiru Wang, et al. "Combined EIS/Tof/SIMS Investigation of Iron Dissolution Mechanisms in CO2 Saturated Chloride Solutions." ECS Meeting Abstracts MA2024-02, no. 27 (2024): 2108. https://doi.org/10.1149/ma2024-02272108mtgabs.

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Aqueous corrosion of mild steel is one of the major problems in the oil and gas industry. The current understanding of corrosion mechanisms, mainly focused to the cathodic reaction, was used to build electrochemical models to predict the corrosion rate of mild steel. However, the effect of aqueous CO2 on the anodic iron dissolution reaction was less studied. In contrast, the mechanism of iron dissolution in strong acidic environments has been thoroughly investigated over many decades. Among the proposed mechanisms in the literature, a broadly applicable multi-path mechanism was identified that

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40

Kühnel, R. S., D. Reber, A. Remhof, R. Figi, D. Bleiner, and C. Battaglia. "“Water-in-salt” electrolytes enable the use of cost-effective aluminum current collectors for aqueous high-voltage batteries." Chemical Communications 52, no. 68 (2016): 10435–38. http://dx.doi.org/10.1039/c6cc03969c.

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Hefny, Mohamed H., Abdullah S. Babaqi, Mohamed S. El-Basiouny, and Ragab M. Abdullah. "Anodic dissolution of zinc in aqueous-methanolic trichloroacetic acid solutions." Collection of Czechoslovak Chemical Communications 56, no. 1 (1991): 236–40. http://dx.doi.org/10.1135/cccc19910236.

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Steady state current-potential curves for the anodic dissolution of zinc in aqueous-methanolic 0.25M trichloracetic acid solutions were constructed for wide ranges of the solution composition and temperature. Analysis of the results reveal that the increase of the water content and rise of temperature of the solution increases the corrosion rate. The most plausible role of the solvent lies within the stabilization of the anodic dissolution reaction products by water molecules. The changes in the properties of the solution due to the presence of methanol which give rise to hindrance of the anod

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42

Grigoryeva, Irina O., and Alexander F. Dresvyannikov. "ELECTROCHEMICAL SYNTHESIS OF DISPERSED BARIUM FERRITE USING ANODIC DISSOLUTION OF METAL." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, no. 4 (2021): 59–66. http://dx.doi.org/10.6060/ivkkt.20216404.6315.

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The process of anodic dissolution of iron (purity not less than 99%) in aqueous solutions of barium chloride, barium nitrate and binary electrolytes under galvanostatic conditions and by registration of potentiodynamic polarization curves was investigated. The influence of solution composition and concentration and the value of applied direct current on the intensity of anodic oxidation of iron was shown. It was revealed that the oxidation rate of metal in binary electrolytes containing barium chloride and barium nitrate is comparable with the intensity of anodic dissolution in a solution base

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Nurdillayeva, R., Sh Dauletuly, and A. Bayeshov. "Transpassive and abnormal dissolution of titanium electrodes in hydrofluoric acid aqueous solution." Chemical Journal of Kazakhstan, no. 1 (March 30, 2023): 34–43. http://dx.doi.org/10.51580/2023-1.2710-1185.04.

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One of the urgent problems of electrochemistry is the reuse of production waste of a relatively expensive metal – titanium, which is in great demand in mechanical, aircraft engineering, medicine, and nanotechnology. The purpose of this work is to study the abnormal cathodic and transpassive anodic dissolution behavior of a titanium electrode in an aqueous hydrofluoric acid solution. Methodology. The anode and cathode spaces are separated by an anion exchange membrane. As a result of the electrochemical dissolution of titanium Ti4+ ions are formed in the anode space, and Ti3+ ions are formed in

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Wang, Peilin, Yu Zhang, Hao Shi, et al. "Local Basicity Dependent Gas-Liquid Interfacial Corrosion of Nickel Anode and Its Protection in Molten Li₂CO₃-Na₂CO₃-K₂CO₃." Journal of The Electrochemical Society 169, no. 3 (2022): 031505. http://dx.doi.org/10.1149/1945-7111/ac5852.

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Revealing the gas-liquid interfacial corrosion mechanism of metals under anodic polarization in molten salts is crucial for the development of metallic anodes for molten carbonate electrolysis. Herein, the effects of operating temperature, gas atmosphere, applied current density and electrolysis time on the gas-liquid interfacial corrosion behaviors of nickel anodes in molten Li2CO3-Na2CO3-K2CO3 were systematically investigated. It was found that the gas-liquid interfacial corrosion of nickel anodes was accelerated with decreasing temperature and increasing CO2 content of gas atmosphere. Three

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45

Colbin, Lars Olow Simon, Charles Aram Hall, Ahmed S. Etman, Alexander Buckel, Leif Nyholm, and Reza Younesi. "Anodic Dissolution of Aluminum in Sodium-Ion Batteries: A Comparison of Electrolyte and Solvent Composition." ECS Meeting Abstracts MA2023-02, no. 65 (2023): 3054. http://dx.doi.org/10.1149/ma2023-02653054mtgabs.

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The anodic dissolution behavior of aluminum was studied in various sodium-based electrolyte solutions using cyclic voltammetry and chronoamperometry. The aim was to investigate how different electrolyte and solvent compositions affect the dissolution process. The electrolyte solutions tested included 0.284 m NaBOB in TEP, 1.00 m NaPF6 in TEP, 1.00 m NaPF6 in EC:DEC, 1.00 m NaPF6 in diglyme, 1.00 m NaFSI in PC, and 1.00 m NaFSI in TEP. SEM imaging was also performed to analyze the morphological changes of the aluminum surface during the dissolution process. To emphasize any dissolution process,

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Xieeryazidan, Adayi, and Amina Kader. "On Influence of Change in Anodic Surface Micro-Topography on Electric Current Field in Electrochemical Finishing." Advanced Materials Research 503-504 (April 2012): 1002–5. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1002.

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In processing of electrochemical finishing (ECF), electrochemical dissolution makes anodic surface micro-topography change. To identify the influence of the change on the distribution of electric-current field between electrodes, mathematical model describing the distribution of the electric-current field along the profile of the anodic surface micro-topography was established. The results of simulations and experiments show that the variation in the anodic surface micro-topography makes the distribution density of the electric-current uniform, and the sharp or peak-like micro-topography is in

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Rybalka, K. V., and L. A. Beketaeva. "Effect of Ga3+ and In3+ Ions on the Anodic Dissolution of Aluminum in KOH Ethanol Solutions." Электрохимия 59, no. 2 (2023): 111–16. http://dx.doi.org/10.31857/s0424857023020093.

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The anodic dissolution of aluminum in the KOH ethanol solutions is considered. It is shown that an addition of gallium and indium compounds to the 2 M KOH solution in 96% ethanol leads to an abrupt increase in the anodic dissolution current of aluminum near the open-circuit potential and its shift by 300 mV toward negative values. The discharge galvanostatic curves in the solutions with the additives of gallium and indium compounds contain a flat discharge plateau at the current densities up to 4 mA/cm2. The hydrogen evolution rate in a number of KOH ethanol solutions is measured.

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Silkin, S.A., E.N. Aksenov, E.A. Likrizon, V.I. Petrenko, and A.I. Dikusar. "Anodic Dissolution Localization under Pulsed Electrochemical Machining of Heat-Resistant Nickel-Chromium Alloys." Elektronnaya Obrabotka Materialov 55(2) (April 15, 2019): 1–9. https://doi.org/10.5281/zenodo.2629536.

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It is shown that anodic dissolution of heat-resistant nickel-chromium alloys using microsecond pulses (20 µs) with a maximum current density per pulse, up to 100 A/cm<sup>2</sup>, allows to increase anodic dissolution localization due to increasing the current efficiency versus the current density relationship. Such dependence was observed only for nickel-chromium steel and with a duty ratio of not less than 4. It has been hypothesized that the cause of the observed dependence is thermokinetic effects (positive feedback: the electrochemical process rate (current density) – surface

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Savadogo, O. "Comportement photoélectrochimique de ZnIn2S4(n) dans l'obscurité et sous éclairement en solution électrolytique aqueuse." Canadian Journal of Chemistry 70, no. 4 (1992): 1098–104. http://dx.doi.org/10.1139/v92-145.

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Photoelectrochemical characteristics of ZnIn2S4(n) have been studied by potentiodynamic methods and capacity measurements. The variation of the anodic current density (ia) as a function of [OH−] and [H3O+] has been studied under darkness. This darkness current is small (~1 μA cm−2) and it has been attributed to the anodic dissolution of the material. This process is not diffusion controlled. This behaviour was attributed to electron transfer by tunnel effect via localized interface states. The dissolution of the material under illumination has been determined. Its dissolution requires eight ho

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Srividya, C., I. Moskowitz, and S. V. Babu. "Anodic dissolution of diamondlike carbon film-coated type 301 stainless steel." Journal of Materials Research 14, no. 5 (1999): 2124–32. http://dx.doi.org/10.1557/jmr.1999.0287.

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The resistance of thin diamondlike carbon (DLC) films to anodic breakdown in aqueous electrolytes was investigated using voltammetry. The films were less than 0.5 μm thick and were deposited on type 301 stainless steel substrates using plasma-assisted chemical vapor deposition (PACVD) from either methane, acetylene, or 1,3-butadiene precursors with argon or hydrogen as diluent. A 10 nm thick polysilicon (PS) film was plasma-deposited prior to DLC film deposition to improve adhesion. The electrolytes used for corrosion testing were mixtures of 0.1 M NaCl and 0.1 M Na2SO4 and 0.1 M HCl and 0.1 M

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