Relevant bibliographies by topics / Electrode de zinc

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Academic literature on the topic 'Electrode de zinc'

Author: Grafiati
Published: 25 May 2024

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Journal articles on the topic "Electrode de zinc"

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Payer, Gizem, and Özgenç Ebil. "Zinc Electrode Morphology Evolution in High Energy Density Nickel-Zinc Batteries." Journal of Nanomaterials 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/1280236.

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Prismatic Nickel-Zinc (NiZn) batteries with energy densities higher than 100 Wh kg−1were prepared using Zn electrodes with different initial morphologies. The effect of initial morphology of zinc electrode on battery capacity was investigated. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) reveal that initial morphology of zinc electrode changes drastically after a few charge/discharge cycles regardless of initial ZnO powder used. ZnO electrodes prepared using ZnO powders synthesized from ZnCl2and Zn(NO3)2lead to average battery energy densities ranging between 92 Wh kg−1and 109 Wh kg−1while using conventional ZnO powder leads to a higher energy density, 118 Wh kg−1. Average discharge capacities of zinc electrodes vary between 270 and 345 mA g−1, much lower than reported values for nano ZnO powders in literature. Higher electrode surface area or higher electrode discharge capacity does not necessarily translate to higher battery energy density.
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Kim, Ji-Hyun, Jung Eun Park, and Eun Sil Lee. "Zinc Recovery through Electrolytic Refinement Using Insoluble Ir + Sn + Ta + PdOx/Ti Cathode to Reduce Electrical Energy Use." Materials 12, no. 17 (August 29, 2019): 2779. http://dx.doi.org/10.3390/ma12172779.

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In this study, an alumina (Al) anode, a lead cathode, and insoluble catalytic cathodes (IrOx, PdOx, TaOx, and SnOx) were used as electrodes to enhance zinc recovery. The traditionally used iron electrode and insoluble catalytic electrodes were also used to compare the recovery yield when different types of electrodes were subjected to the same amount of energy. The lead electrode showed over 5000 Ω higher electrode resistance than did the insoluble catalytic electrode, leading to overpotential requiring higher electrical energy. As electrical energy used by the lead and the insoluble catalytic electrodes were 2498.97 and 2262.37 kwh/ton-Zn, respectively, electrical energy can be reduced by 10% when using an insoluble catalytic electrode compared to that when using a lead electrode. Using recovery time (1–4 h) and current density (100–500 A/m2) as variables, the activation, concentration polarization, and electrode resistance were measured for each condition to find the optimum condition for zinc recovery. A recovery yield of about 77% was obtained for up to 3 h of zinc recovery time at a current density of 200 A/m2, which is lower than that (about 80%) obtained at 300 A/m2. After 3 h of recovery time, electrode resistance (Zn concentration reduction, hydrogen generation on electrode surface) and overpotential increase with time decreased at a current density of 200 A/m2, leading to a significant increase in zinc recovery yield (95%).
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Kim, Ki Jae, Han Jun Leem, Jisang Yu, and Hyun-seung Kim. "Spontaneous Lithiophilic and Lithium-Ion Conductive Functional Layer Formation Enabled by Solution-Casted Zinc Nitride for Highly Stable Lithium Metal Electrode in Carbonate Electrolyte." International Journal of Energy Research 2023 (February 11, 2023): 1–8. http://dx.doi.org/10.1155/2023/9526791.

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To improve the reversibility of the Li metal negative electrodes, the simultaneous formation of individually functionalized zinc metal and lithium nitride during the spontaneous conversion reaction of zinc nitride particle is conducted by casting of zinc nitride particles on the lithium electrode. Lithiophilic zinc metal reduces the nucleation polarization of the lithium electrode, whereas the highly ionic conductive and electronically insulating Li3N decreases the concentration polarization from the facile ion conduction and suppression of further electrolyte decomposition during Li plating and stripping. Both these sophisticated characteristics resulted in an improvement in the deposition morphology of lithium electrode, thereby enhancing the reversibility of lithium electrode. Consequently, the cycleability improvement of Li/LiNi0.8Co0.1Mn0.1O2 is achieved through the application of zinc nitride surface-treated lithium electrode.
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Nazri, M. A., Anis Nurashikin Nordin, L. M. Lim, M. Y. Tura Ali, Muhammad Irsyad Suhaimi, I. Mansor, R. Othman, S. R. Meskon, and Z. Samsudin. "Fabrication and characterization of printed zinc batteries." Bulletin of Electrical Engineering and Informatics 10, no. 3 (June 1, 2021): 1173–82. http://dx.doi.org/10.11591/eei.v10i3.2858.

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Zinc batteries are a more sustainable alternative to lithium-ion batteries due to its components being highly recyclable. With the improvements in the screen printing technology, high quality devices can be printed with at high throughput and precision at a lower cost compared to those manufactured using lithographic techniques. In this paper we describe the fabrication and characterization of printed zinc batteries. Different binder materials such as polyvinyl pyrrolidone (PVP) and polyvinyl butyral (PVB), were used to fabricate the electrodes. The electrodes were first evaluated using three-electrode cyclic voltammetry, x-ray diffraction (XRD), and scanning electron microscopy before being fully assembled and tested using charge-discharge test and two-electrode cyclic voltammetry. The results show that the printed ZnO electrode with PVB as binder performed better than PVP-based ZnO. The XRD data prove that the electro-active materials were successfully transferred to the sample. However, based on the evaluation, the results show that the cathode electrode was dominated by the silver instead of Ni(OH)2, which leads the sample to behave like a silver-zinc battery instead of a nickel-zinc battery. Nevertheless, the printed zinc battery electrodes were successfully evaluated, and more current collector materials for cathode should be explored for printed nickel-zinc batteries.
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Park, Mijung, and Taeksoon Lee. "A Study on the Application Characteristics of the Insoluble MMO (Mixed Metal Oxide) Electrode for Energy Reduction of Zinc Electrowinning Process." Journal of Korean Society of Environmental Engineers 42, no. 9 (September 30, 2020): 424–30. http://dx.doi.org/10.4491/ksee.2020.42.9.424.

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Objective : The zinc electrowinning industry is one of the high energy consumption industries where energy saving is required. In the zinc electrowining process, electrode is a high energy consuming part. In order to reduce energy use in the electrolytic smelting industry, a comparative study was conducted on the current usage of Pb+Ag alloy electrode and insoluble composite metal oxide (MMO) electrode.Methods : In this study, a comparative evaluation of energy consumption was conducted between the generally used Pb+Ag alloy electrode and an insoluble MMO electrode. Aluminum was used as a reducing electrode. The actual on-site zinc electrowinning solution and ZnSO₄ simulated solution were prepared to estimate the electrode potential, voltage, zinc deposition efficiency, and lifetime characteristics under the current density of 500 A/m².Results and Discussion : The overvoltage of the insoluble MMO electrode was 28.9% lower and the voltage was 15.0% lower than that of Pb+Ag alloy electrode. The zinc deposition efficiency of the insoluble MMO electrode was higher 1.9% in the actual on-site zinc electrowinning solution and 6.3% in the simulated solution. Compared with the Pb+Ag alloy electrode in use, the insoluble composite metal oxide electrode exhibited low overvoltage, good voltage characteristics, and high current efficiency characteristics.Conclusions : When the energy consumption of the Pb+Ag alloy and the insoluble MMO electrodes was compared, The insoluble MMO electrode showed 17.0% lower energy consumption in the actual on-site zinc electrowinning solution and 23.8% lower in the ZnSO₄ simulated solution than Pb+Ag alloy electrode.
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Liang, Hong Xia, and Zhi Lin Wang. "Effect of Indium Addition on the Electrochemical Behavior of Zinc Electrodes in Concentrated Alkaline Solutions." Advanced Materials Research 721 (July 2013): 95–104. http://dx.doi.org/10.4028/www.scientific.net/amr.721.95.

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The electrochemical behavior of zinc electrode with indium addition in 35%KOH(or saturated with ZnO) solutions has been investigated systematically by electrochemical methods including linear polarization, potentiostatic polarization, potentiodynamic anodic polarization, potential-time measurements at a constant current density, combining the observations of scanning electron microscopy (SEM). It is indicated that the indium addition makes the corrosion potential of Zn shifted positively and its corrosion current increased. Galvanostatic results showed that the addition of indium shortened the passivation time, indicating indium is an active element to the electrochemical performance of zinc alloy electrode. The potentiostatic polarization curves of the pure zinc plate and zinc-indium alloy electrodes in a 35%KOH solution saturated with ZnO indicated that the addition of indium improved the cathodic polarization of alloy electrodes and the deposition overpotential,mean while it depressed the deposition morphology of zinc on the electrode and accelerated the dendrite growth. Scanning electron microscopy images showed that the addition of indium aggravated the corrosion of zinc electrode which may be responsible for the increased tendency to passivation at high current densities. It has been found that at low current densities the reaction kinetics may be increased by indium addition , which is agreement with the discharging test of actual alkaline batteries.
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Lee, Sangyup, Paul Maldonado Nogales, and Soon Ki Jeong. "Influence of Electrolyte Concentration on the Electrochemical Behavior of Copper Hexacyanoferrate as an Active Material for Zinc-Ion Batteries." Materials Science Forum 1119 (March 29, 2024): 25–30. http://dx.doi.org/10.4028/p-2jsyvs.

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This study investigates the impact of electrolyte concentration on the electrochemical behavior of copper hexacyanoferrate (CuHCF), a promising active material for aqueous zinc-ion battery electrodes. Cyclic voltammetry, charge-discharge measurements, and X-ray diffraction analysis were employed to assess the electrochemical reactions and structural integrity of the CuHCF electrode under varying electrolyte concentrations. The results revealed a significant influence of electrolyte concentration on the electrochemical performance of the CuHCF electrode. Specifically, the charge-discharge capacity exhibited an initial increase as the electrolyte concentration increased from 1.0 to 2.0 mol dm‒3, followed by a subsequent decrease. This decrease in capacity was attributed to the occurrence of an electrode/electrolyte interfacial reaction in the low-potential region of 0.0–0.3 V, coupled with structural changes in the CuHCF active material. Notably, these findings underscore the strong correlation between the electrochemical performance of the CuHCF electrode and the hydration structure of zinc ions, as well as the pH of the electrolyte solution. Thus, optimizing the electrolyte composition holds significant potential for enhancing the performance of aqueous zinc-ion batteries employing CuHCF electrodes.
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Nor Hairin, Assayidatul Laila, Raihan Othman, Hanafi Ani Mohd, Hens Saputra, and Muhd Zu Azhan Yahya. "Evaluation of Porous Electrode Properties Using Metal-Air Electrochemical System." Advanced Materials Research 512-515 (May 2012): 1619–23. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1619.

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This work explores the use of metal-air electrochemical system to evaluate porous electrode properties i.e. specific surface area and pore volume density. Porous zinc electrodes are prepared from an acidic, chloride electrolytic bath of varying supporting electrolyte (NH4Cl) formulation to produce electrodeposits of distinctive properties. Nitrogen physisorption at 77 K is utilized to evaluate the specific surface area and pore volume density of the electrodes. The zinc electrodeposits prepared from all electrolytic bath formulations are then assembled into zinc-air cells as the anodic electrode and characterized according to their limiting current density and discharge capacity. It is found that the variation in limiting current density matches that of BET surface area and the trend for discharge capacity follows that of pore volume density.
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Yang, Xiao Yong, Pei Xian Zhu, and Yun Sen Si. "Preparation and Application of Lead Dioxide Electrode for Zinc Electrolysis." Advanced Materials Research 785-786 (September 2013): 1125–29. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.1125.

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According to the process of anodic oxygen evolution in sulfate system for zinc electrolysis,Ti-base lead dioxide electrode can be prepared to use in this case.The surface characterization of the electrode was studied by Scanning electron microscopy(SEM) and X-ray diffraction(XRD).The electrode lifetime was tested in 1mol/L H2SO4solution at 60°C,and the electro-catalytic properties was examined by polarization curves.Then these samples was enlarged and simulation test was conducted at Mengzi marriage zinc smelter in Yunnan.The results show that the electro-catalytic properties is better and the electrodes lifetime is longer compared to the traditional lead electrode.Moreover,it has a significant effect in reducing energy consumption, manufacturing cost and improving the production and grade of zinc.
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Boonpong, Rabat, Attera Worayingyong, Marisa Arunchaiya, and Atchana Wongchaisuwat. "Effect of LaCoO3 Additive on the Electrochemical Behavior of Zinc Anode in Alkaline Solution." Materials Science Forum 663-665 (November 2010): 596–99. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.596.

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The utilization of zinc anode for zinc-based battery is limited due to low cycling life, shape change and ZnO passivation on the electrode surface. The electrochemical behavior of zinc anode in the presence of the additives added to the electrodes or the electrolytes have been reported. In this work, LaCoO3 was used as an additive to improve the electrochemical properties of the zinc oxide anode. LaCoO3 synthesized by sol gel method (Schiff base complex) was added to zinc oxide powder (99.9%) with the weight ratio of 1:0.001, 1:0.002 and 1:0.003. The relative ZnO/LaCoO3 ratios were confirmed by particle induced x-ray emission (PIXE) technique.The electrochemical behavior of the ZnO/LaCoO3 electrodes in 6M KOH solution were investigated by voltammetry and electrochemical impedance spectroscopy (EIS). The cyclic voltammogram showed that ZnO/LaCoO3 gave higher anodic current and ZnO passivation delayed. The EIS spectra showed that charge transfer resistances of the ZnO/LaCoO3 anodes due to zinc oxidation were higher than that of ZnO electrode
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Dissertations / Theses on the topic "Electrode de zinc"

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Bass, Kevin. "Zinc electrode performance in modified electrolyte." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/10348.

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Caldeira, Vincent. "Développement d'électrodes composites architecturées à base de zinc pour accumulateurs alcalins rechargeables." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI065.

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Ces travaux de thèse résultent d’une étude multidisciplinaire dont l’objectif final était d’élaborer une électrode négative à base de zinc pour accumulateur alcalin rechargeable. L’origine de l’étude tient en la découverte surprenante, par la société EASYL, d’un nouveau procédé de synthèse du zincate de calcium (CAZN), matière électrochimiquement active et connue pour ses bonnes caractéristiques de cyclabilité en générateur alcalin rechargeable. L’intérêt de cette découverte réside dans ses caractéristiques avantageuses : la synthèse ultra-rapide se fait en continu, n’utilise aucun système de chauffe ni de solution alcaline et conduit à une granulométrie et une pureté contrôlée du zincate de calcium ; la rendant compatible avec une production industrielle de ce matériau.L’utilisation de CAZN en batterie prismatique de 4 Ah a permis la découverte d’un fonctionnement des électrodes de type cœur-coquille, leur cœur actif étant riche en zinc et leur surface jouant le rôle de couche protectrice ; si la capacité nominale est choisie inférieure à la capacité théorique de la batterie, l’activité à cœur de l’électrode est maintenue sans que sa surface ne soit altérée, ce qui permet d’éviter (ou de ralentir) la formation de dendrite, un effet très bénéfique sur la cyclabilité de l’électrode.Cependant, l’utilisation du zincate de calcium comme seule source de matière active ne semble pas appropriée. En effet, la formation du cœur de zinc conduit à l’apparition d’une couche résistive d’hydroxyde de calcium à sa périphérie, diminuant les performances électrochimiques des électrodes. Aussi surprenant que cela puisse paraitre, il est cependant possible de régénérer une électrode vieillie ayant formé une couche riche en hydroxyde de calcium par un simple repos, soit un arrêt pur et simple de la batterie. La formation de cette couche résistive peut en outre être évitée par l’ajout d’oxyde de zinc sacrificiel au zincate de calcium, additif actif qui s’est avérée efficace tant d’un point de vue morphologique qu’électrochimique.En revanche, la formation contrôlée d’un cœur riche en zinc conduit à la densification du zinc sur lui-même, et diminue la surface de contact matière active/électrolyte et donc les performances électrochimiques. Partant de ce constat, la structure de l’électrode a été intégralement repensée pour permettre la formation, non pas d’un cœur de zinc, mais de plusieurs d’entre eux, par l’emploi de collecteurs de courant multicouches ; cette méthodologie, aussi simple qu’efficace, conduit à d’excellentes performances pratiques et une cyclabilité optimale de la batterie
The work presented in this document results from a multidisciplinary study, the unique goal of which is to develop a negative electrode for alkaline rechargeable batteries. At the origin of this thesis, is the surprising discovery by EASYL of a new way to synthesize calcium zincate (CAZN), an electrochemically active material known for its good cycling characteristics in alkaline batteries. The advantage of such a discovery resides in its unique characteristics: the ultra-fast synthesis is carried out continuously, uses neither heating system nor alkaline solutions, yields pure and tailored CAZN crystals; it is therefore compatible with an industrial production of this material.Its use in a 4 Ah prismatic batteries allowed to unveil a core-shell operation mechanism, in which the electrode evolves towards an active zinc-core surrounded by a protective shell. So, if the nominal capacity remains below the theoretical one, the core of the electrode can be kept active while the surface is maintained, thus avoiding (or at least slowing down) possible dendrite formation and yielding prolonged cycle life.However, the use of calcium zincate as the only active material source is not appropriate, because the formation of the zinc-core leads to the appearance of a resistive layer of calcium hydroxide at its periphery, which reduces the overall electrochemical performance. As surprising as it may seem, it is possible to regenerate an electrode having formed such a calcium hydroxide-rich layer by a simple rest such as a stop of the battery. Nevertheless, it is preferable to avoid the formation of this resistive layer and to do so, the use of a mixture of sacrificial zinc oxide combined with calcium zincate has proven very effective, both from a morphological and an electrochemical point-of-view.However, the controlled formation of a zinc-rich core leads to zinc densification on itself; this decreases the surface of contact between the active material and the electrolyte, and thus the electrochemical performance. This negative effect has been overcome by drastically rethinking the structure of the electrode, in order to allow the formation of multiple and tailored zinc cores. To that goal, multilayers of current collector were employed, which proved simple and effective to reach high-performance and high cyclability zinc electrodes for alkaline batteries
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Dong, Mengyang. "Heterostructured Electrocatalysts for Oxygen Electrode in Rechargeable Zinc-Air Batteries." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/418672.

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Nowadays, under the background of environmental pollution and energy crisis, with the continuous development of various forms of new energy, energy conversion and storage devices are essential to the utilization of renewable energy. Among them, clean battery technology is developing rapidly. Compared with traditional batteries including lithium batteries, Zn-air batteries have unique advantages and face significant development opportunities due to their high theoretical energy density, safety and environmental protection. However, as a secondary battery, the rechargeable Zn-air battery is charged and discharged at the air cathode. The high overpotential and slow kinetic process of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), which occur respectively, seriously affect the actual efficiency of the battery, which has become an essential obstacle for the commercial use of Zn-air batteries. In order to explore the excellent theoretical performance of Zn-air batteries, it is an essential mean to use electrocatalysts with ORR/OER dual catalytic function to improve the cathode reaction efficiency. Based on this, this thesis reviews the structure, reaction mechanism, structure and performance characteristics of various oxygen reaction electrocatalysts of Zn-air batteries, and analyzes the material factors affecting the performance of catalysts. Utilizing strategies such as porous carbon, heteroatom doping, transition metal oxides, single-atom modulation, and defect control, a series of composite materials with high ORR/OER dual catalytic activity were prepared. The structure, electrochemical properties and catalytic performance of the materials in Zn-air batteries were studied. In addition, this thesis also investigates the application of catalysts in miniature wearable solid-state Zn-air batteries combined with various new battery configuration designs. In this dissertation, a series of transition metal carbon-based bifunctional catalysts with excellent performance were prepared based on various building elements. However, the analysis and research in this thesis revealled the fine materials science contents such as the electronic state distribution of the adsorption and bonding of heteroatom-doped carbon to oxygen reaction intermediates, and the regulation pathway of adsorption sites caused by defects. Understanding these contents is very important for explaining the structure-activity relationship of catalytic materials. Studying a bifunctional catalyst for Zn-air batteries that can work stably and maintain a terrific constant charge-discharge potential gap, withstanding high current density, will eventually lead to a revolution in the battery industry. However, most of the reported electrocatalysts in high-rate Zn-air batteries to date do not have enough durability, suffering from unstable nanostructures, poor electrical conductivity, low active sites, and high overpotentials. In view of this, it is the ultimate proposition of the road to Zn-air batteries applications to pursuit ultrastable and cheap catalysts that can alleviate particle aggregation, have abundant active sites and low resistance. In addition, compared with liquid Zn-air batteries, the performance of all-solid-state Zn-air batteries in various reports, is often poor, which originates from the insufficient water retention and conductivity of solid-state electrolytes, improper catalyst loading method and battery configuration. Various factors such as design, especially the research and development of new solid-state electrolytes, are of great significance for the development of wearable rechargeable Zn-air batteries with both flexible mechanical properties and charge-discharge efficiency. In order to solve the above problems and these drawbacks of Zn-air batteries, different characterization techniques are used to determine the similarity or commonality of composite electrocatalysts with high efficiency and activity. The main research contents are as follows: (1) Spinel-type metal oxides, as a group of the transition metal oxides, are considered as one of the most promising bifunctional oxygen electrocatalysts due to its unique electronic structure, mixed metalic valence centres with redox behaviours, abundance and environmental friendliness. In the first work, a facile one-step hydrothermal method is reported for the synthesis of a high-performance bifunctional oxygen electrocatalyst, cobalt-doped Mn3O4 nanocrystals supported on graphene nanosheets (Co-Mn3O4/G). Compared to pristine Mn3O4, this Co-Mn3O4/G exhibits greatly enhanced electrocatalytic activity, delivering a half-wave potential of 0.866 V for the ORR and a low overpotential of 275 mV at 10 mA cm−2 for the OER. The Zn-air battery built with Co-Mn3O4/G shows a reduced charge–discharge voltage of 0.91 V at 10 mA cm−2, a peak power density of 115.24 mW cm−2 and excellent stability without any degradation after 945 cycles (315 h), outperforming the state-of-the-art Pt/C–Ir/C catalyst-based device. This work offers an efficient strategy to synthesize spinel-type complex oxide materials in high-performance bifunctional oxygen electrocatalyst areas. (2) In order to make the Zn-air batteries work well at a high current, structural optimization is imperative. In the second work, a rapid seeding synthesis strategy is reported for the fabrication of impregnated Co3O4-based carbon ultra-thin nanosheets (Co3O4/C-NS) architecture induced by CoMOF as a bifunctional electrocatalyst. The impregnated ultra-thin nanosheets network would provide prolific pathways for efficient mass transfer, which allows the inner active sites to be accessible to electrolyte and oxygen. Additionally, the MOF-derived carbon matrix would suppress the aggregation of Co3O4 nanoparticles and increase the stability of the catalyst during the high-density charge/discharge cycling. Our Co3O4/C-NS exhibits uniform morphology, high specific area, low internal resistance, and superior ORR and OER activity to the benchmark Pt/C and Ir/C, respectively. Furthermore, the Zn-air batteries fabricated with the assynthesized electrocatalyst afford remarkably stable charge/discharge at a high current density of 25 mA cm-2, surpassing most of the previously reported catalysts. The material engineering approach highlighted herein exemplifies a facile yet effective avenue towards stable, efficient and robust non-noble metal-based electrocatalysts. (3) Single-atom catalysts (SACs) have attracted great interest in the field of catalysis, mainly because SACs not only possess the advantages of homogeneous and heterogeneous catalysts, but also possess some unique properties. In the third work, NiCo-LDH with electrocatalytic Ni and Co were grown on Ni, Co-codoped, hierarchically ordered macroporous carbon (NiCo-LDH@NiCo-SAs/OPC) derived from pyrolysis of ZIFs via a facile method. The strong coupling between NiCo-LDH and NiCo- SAs/OPC not only sharply facilitates the electron transfer but also result in high chemical stability against the corrosion during charging and discharging processes. Additionally, interconnected hierarchically porous structures were involved in NiCo-SAs/OPC via introducing removable templates, which would serve as channels to accelerate mass transport (O2 and electrolytes) during electrochemical steps. The obtained hierarchically porous NiCo-LDH@NiCo-SAs/OPC possesses abundant atomically dispersed Ni-Nx, Co-Nx sites and continuous species/charge transport channels, and exhibits good bifunctional ORR/OER electrocatalytic performance, which is superior to the corresponding noble metals Pt/C and RuO2 catalysts. More importantly, the rechargeable Zn metal-air batteries assembled with NiCo-LDH@NiCo-SAs/OPC also exhibited good charge-discharge performance and long-term stability. (4) Alloy-based electrocatalysts have been studied as bifunctional catalysts for ORR/OER for a long-time. In the fourth work, NiCo bi-alloy particles are used to embed onto the carbonized MF framework (NiCo@CMF), which has shown excellent performance, providing a new idea for designing other non-precious metal ORR/OER bifunctional electrocatalysts. More importantly, NiCo@CMF electrode can be processed into various shapes, furthermore, the assembled Zn-air battery shows pretty good flexibility during application as well as an appreciable charge-discharge voltage gap. While maintaining high-efficiency battery performance, the battery exhibits excellent bending mechanical properties. These works provide the power supply for nextgeneration smart wearable devices. The unique machinable NiCo@CMF electrode will have many potential applications, providing more possibilities for the design of wearabletype Zn-air batteries, and the cost-effectiveness of the NiCo@CMF electrode allows it to be fabricated on a large scale, providing a more economically viable avenue to the Zn-air batteries technology. This strategy can even be extended to other wearable devices for wider promotion.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
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Gong, Minhui. "Etude des électrodes sur batterie zinc-air." Electronic Thesis or Diss., Université Paris sciences et lettres, 2021. http://www.theses.fr/2021UPSLC024.

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La batterie zinc-air devient une alternative potentielle à la batterie lithium-ion en raison de son avantage en termes de ressources, de sa densité d'énergie théorique élevée et de son faible potentiel de risque pour la sécurité. Ce travail met l'accent sur les problèmes conventionnels impliquant à la fois l'électrode à zinc et à air, visant à l'application.Pour l'électrode de zinc, deux configurations maison sont utilisées pour étudier la croissance des dendrites de zinc et l'évolution de l'hydrogène pendant le dépôt avec un électrolyte statique et en flux, respectivement. On trouve qu'une concentration élevée de zincate dans un électrolyte avec 7 M KOH (> 0,4 M ZnO) et la présence de circulation de l’électrolyte sont préférables pour réduire la croissance des dendrites. Cependant l'électrolyte en circulation générerait plus de dégagement d'hydrogène. Pour l'électrode à air, une étude de voltampèremètre cyclique détaillée de l'activité catalytique de pérovskites de lanthane- manganèse dopés au strontium (LSMO) vis-à-vis de la réaction de réduction de l'oxygène est menée. Une nouvelle méthodologie est proposée pour la comparaison de l'activité catalytique des LSMO. L'assemblage de la batterie zinc-air est également testé en formulant les électrodes avec un polymère PVDF-HFP prometteur dans les applications d’électrode à air
Zinc-air battery is becoming a potential alternative for lithium-ion battery owing to its resource stock advantage, high theoretical energy density, and low potential of safety risk. This work emphasizes the conventional issues involving both zinc and air electrode, aiming to application.For the zinc electrode, two homemade setups are used to study the zinc dendrite growth and hydrogen evolution during deposition with static and flowing electrolyte, respectively. It is found that high zincate concentration in electrolyte with 7 M KOH (>0.4 M ZnO) and flowing electrolyte are preferable for depressing dendrite growth. While flowing electrolyte would generate more hydrogen evolution. For the air electrode, a detailed cyclic voltametric investigation of the catalytic activity of lanthanum strontium manganese oxides (LSMO) towards oxygen reduction reaction is conducted. A new current normalization method is proposed for comparison of catalytic activity of the LSMOs. Zinc-air battery assembly is also tested, while remaining to be improved. Nevertheless, cost-effective PVDF-HFP is found to be a promising binder for air electrode formulation
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Dongui, Bini Kouame. "Electrode métallique négative pour générateurs électrochimiques "tout solide" à conduction protonique." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0111.

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Ferreira, Jane Zoppas. "Electrocristallisation et dissolution du zinc dans un electrolite alcalinen circulation : cas d'une electrode poreuse et d'une electrode massive bombardee par des particules spheriques." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/170149.

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Le componement de deux types d'électrode de zinc en milieu alcalin a été étudié une électrode poreuse traversée par un électrolyte et une élect rode massive soumise à l'impact de billes mises en ci rculation avec l'élcctrolytc. A partir des mesures d'impédance électrochimique. on montre que l'élcctrode poreuse équivaut à un milieu constitué de pores cylindriques dont on suit les changements de texture en fonction de la polarisation. 11 s'avcrc que. mêrne avcc une circulation forcée, la pénétration du courant Jans lcs pores reste Ires faiblc notammcnt lorsque l'électrode débite du courant anodiquement ou cathodiquement. L'effet des chocs des billes sur une électrode massive polariséc cst étudié par analyse spectrale et temporelle des fluctuations. Les mcsurcs simultanées dcs fluctuations de potentiel et de rés istance d'é lectrolytc sont utilisées pour identifier les constantes de temps caractéristiques liées au tcm ps d'approchc des billes et à Ieur temps de séjour prcs du collecteur. Tandis que l'impact des billes de verre provoque uniquernent des cffets ohmiques sur les processus de dissolution et d'électrocristallisation du zinc. les billcs de zinc provoquent, cn plus, des fluctuations de potentiel dépola risantcs et apparaissant aux fréquences élevées. La modélisation de ces fluctuations montre qu'elles sont liées au temps de rccharge de la capacité du collecteur à travers l'impédancc faradique, qui suit I'échange rapide de charge électriquc provoqué par lcs chocs entre Ies billes de zinc et le collccteur. Les micrographies dcs élcct rodes polarisécs et Ies mesures d'impédance montrent que lcs chocs dcs billes cxcrccnt cn plus dcs effets sur les phénomcnes interfaciaux qui contrôlent les réactions se déroulant sur l'électrode de zinc.
In alkaline medium, the behaviour of two types of zinc electrodes has been studicd : a porous electrode flowed through by thc electrolyte and a solid one collided by sp herical particles circulating with the clcctrolyte. From clcctrochcmical impcdance measuremcnts, it is shown that the porous electrode behaves as a cylindrical pores clcctrode the tcxture of which changes with increasing polarisation. It was found that cvcn under forced electrolyte circulation. the current penetration in pores is shallow both under anodic and cathodic polarisations. The panicles impacts on the solid clcctrode result in a noise analyzcd both in the frequency and time domains. Simultaneous mcasurements of potcntial and electro lyte resistance fluctuations are used to identify the charactcristic time constants related to thc approach and rcsidence times of panicles within the electrode vicinity. While glass panicles gene rate only ohmic drop flutuations during the zinc dissolution or clcctrodcposition. zinc particles also induced potential fluctuations in the high frcqucncy domain. Modelling these fluctuations has concluded that they are related to thc recharging time of the electrode capacitance subsequent to the instantancous charge exchange taking place when zinc particles collide the electrodc. As rcvcalcd by impedance spectroscopy and electrode morphology, thesc collisions also influence the interfacial processes controlling the reactions on the zinc clectrode.
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Rodrigues, Joel da Silva. "Estudo da corrosão de revestimentos de zinco-ligas obtidos por imersão a quente sobre aços baixo-carbono." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/49059.

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O zinco vem sendo utilizado, já há bastante tempo, como revestimento protetor e decorativo para peças metálicas [1]. No entanto, cada vez mais a indústria busca revestimentos protetores que sejam mais resistentes à corrosão, que tenham boas características de soldabilidade, pintabilidade e, principalmente baixo custo. Os métodos mais comuns pelos quais os revestimentos de zinco são aplicados são imersão a quente, eletrodeposição e aspersão térmica. O presente trabalho tem como objetivo caracterizar a morfologia dos revestimentos Galvanized (GI), Galvannealed (GA) e Zn-55Al de zinco obtidos pelo processo de imersão a quente, verificar o comportamento eletroquímico e analisar o comportamento corrosivo dos revestimentos pelas técnicas de Potenciometria e Eletrodo Vibratório (SVET). Os resultados demonstraram que é possível a análise das fases por voltametria em microcélula no revestimento em que as fases foram crescidas, porém, não é possível aplicar a técnica nas diferentes fases formadas nos revestimentos industriais devido à espessura dos revestimentos. Não foi observado influência da luz Ultravioleta-visível na taxa de corrosão dos revestimentos estudados por SVET e esta técnica mostrou-se satisfatória para grandes aumentos e pequenas áreas. As análises por SVET demonstraram a possibilidade de analisar a corrosão localizada em diferentes fases intermetálicas nos revestimentos.
Zinc has been used for quite some time, as decorative and protective coating for metal parts. However, the industry increasingly seeks protective coatings that are more resistant to corrosion, have good weldability characteristics, and especially low cost. The most common methods by which zinc coatings are applied are hot dipping, electroplating and thermal spraying. The present work aims to characterize the morphology of the coatings Galvanized (GI), galvannealed (GA) and Zn-55Al of zinc obtained by hot dip process, check the electrochemical behavior and analyze the behavior of coatings for corrosion techniques of pots and Vibrating electrode (SVET). The results showed that it is possible to analyze the phases by microcell voltammetry in the coating in which the phases were grown, however, is not possible to apply the technique in the different phases formed in industrial coatings due to the thickness of coatings. There was no influence of UV-VIS in the corrosion rate of the coatings studied by SVET and this technique was satisfactory for large and small areas increases. The analysis by SVET demonstrated the possibility of analyzing the localized corrosion in different intermetalic phases in coatings.
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MacDonald, Gordon Alex. "Nanoscale Characterization of the Electrical Properties of Oxide Electrodes at the Organic Semiconductor-Oxide Electrode Interface in Organic Solar Cells." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/347338.

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This dissertation focuses on characterizing the nanoscale and surface averaged electrical properties of transparent conducting oxide (TCO) electrodes such as indium tin oxide (ITO) and transparent metal-oxide (MO) electron selective interlayers (ESLs), such as zinc oxide (ZnO), the ability of these materials to rapidly extract photogenerated charges from organic semiconductors (OSCs) used in organic photovoltaic (OPV) cells, and evaluating their impact on the power conversion efficiency (PCE) of OPV devices. In Chapter 1, we will introduce the fundamental principles regarding the need for low cost power generation, the benefits of OPV technologies, as well as the key principles that govern the operation of OPV devices and the key innovations that have advanced this technology. In Chapter 2 of this dissertation, we demonstrate an innovative application of conductive probe atomic force microscopy (CAFM) to map the nanoscale electrical heterogeneity at the interface between an electrode, such as ITO, and an OSC such as the p-type OSC copper phthalocyanine (CuPc).(MacDonald et al. (2012) ACS Nano, 6, p. 9623) In this work we collected arrays of J-V curves, using a CAFM probe as the top contact of CuPc/ITO systems, to map the local J-V responses. By comparing J-V responses to known models for charge transport, we were able to determine if the local rate-limiting step for charge transport is through the OSC (ohmic) or the CuPc/ITO interface (nonohmic). These results strongly correlate with device PCE, as demonstrated through the controlled addition of insulating alkylphosphonic acid self-assembled monolayers (SAMs) at the ITO/CuPc interface. Subsequent chapters focus on the electrical property characterization of RF-magnetron sputtered ZnO (sp-ZnO) ESL films on ITO substrates. We have shown that the energetic alignment of ESLs and the organic semiconducting (OSC) active materials plays a critical role in determining the PCE of OPV devices and the appearance of, or lack thereof, UV light soaking sensitivity. For ZnO and fullerene interfaces, we have shown that either minimizing the oxygen partial pressure during ZnO deposition or exposure of ZnO to UV light minimizes the energetic offset at this interface and maximizes device PCE. We have used a combination of device testing, device modeling, and impedance spectroscopy to fully characterize the effects that energetic alignment has on the charge carrier transport and charge carrier distribution within the OPV device. This work can be found in Chapter 3 of this dissertation and is in preparation for publication. We have also shown that the local properties of sp-ZnO films varies as a function of the underlying ITO crystal face. We show that the local ITO crystal face determines the local nucleation and growth of the sp-ZnO films. We demonstrate that this effects the morphology, the chemical resistance to etching as well as the surface electrical properties of the sp-ZnO films. This is likely due to differences in the surface mobility of sputtered Zn and O atoms on these crystal faces during film nucleation. This affects the nanoscale distribution of electrical and chemical properties. As a result we demonstrate that the PCE, and UV sensitivity of the J-V response of OPVs using sp-ZnO ESLs are strongly impacted by the distribution of ITO crystal faces at the surface of the substrate. This work can be found in Chapter 4 of this dissertation and is in preparation for publication. These studies have contributed to a detailed understanding of the role that electrical heterogeneity, insulating barriers and energetic alignment at the MO/OSC interface play in OPV PCE.
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Holden, Nicholas John. "The improvement of weld quality in medium frequency direct current resistance spot welding." Thesis, Birmingham City University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312224.

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Zinc coated steels are widely used in the automotive industry, because of the improved protection against corrosion. Their use has consequences for the resistance welding process, which is the most widely used method of joining body panels. The zinc coating alloys with the copper electrode, resulting in increased electrode wear, and a reduction in electrode life. The welding current must be increased, because of the reduced contact resistance and thus heavier cables and power sources are required. A novel form of power source, the Medium Frequency Direct Current inverter, offers advantages over the traditional AC transformer. The higher operating frequency results in a lighter transformer, and a smaller welding current may be used, because the DC welding current generates heat at a constant rate, and is thus more effective than an AC power source. A potential advantage of this technology is that the increased frequency allows improved resolution in monitoring and control. Novel signal conditioning circuitry was developed, allowing significant improvement in the time resolution of the voltage and resistance signals. A series of welding trials was conducted, while monitoring the welding process. The correlation between weld quality and various process variables was assessed, and a control algorithm to compensate for electrode wear was proposed. This algorithm, based on a constant voltage principle, was implemented on a bespoke welding timer. A significant improvement in electrode life was obtained using this technique. The control algorithm was shown effective experimentally, but practical limitations do not permit testing under all possible conditions. A numerical model of the spot welding process, using Finite Difference technique, was developed. Following successful validation, the model was used to predict the performance of the control algorithm under various conditions of electrode wear. The results indicate that a constant voltage algorithm can compensate for an increase in electrode tip diameter, but that a change in contact resistance may result in unsatisfactory welds.
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Zoppas, Ferreira Jane. "Electrocristallation et dissolution du zinc dans un electrolyte alcalin en circulation : cas d'une electrode poreuse et d'une electrode massive bombardee par des particules spheriques." Paris 6, 1991. http://www.theses.fr/1991PA066392.

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Le comportement de deux types d'electrode de zinc en milieu alcalin a ete etudie: une electrode poreuse traversee par un electrolyte et une electrode massive soumise a l'impact de billes mises en circulation avec l'electrolyte. A partir des mesures d'impedance electrochimique, on montre que l'electrode poreuse equivaut a un milieu constitue de pores cylindriques dont on suit les changements de texture en fonction de la polarisation. L'effet des chocs des billes sur une electrode massive polarisee est etudie par analyse spectrale et temporelle des fluctuations. Les mesures simultanees des fluctuations de potentiel et de resistance d'electrolyte sont utilisees pour identifier les constantes de temps caracteristiques liees au temps d'approche des billes et a leur temps de sejour pres du collecteur. Tandis que l'impact des billes de verre provoque uniquement des effets ohmiques sur les processus de dissolution et d'electrocristallisation du zinc, les billes de zinc provoquent, en plus, des fluctuations de potentiel depolarisantes et apparaissant aux frequences elevees. La modelisation de ces fluctuations montre qu'elles sont liees au temps de recharge de la capacite du collecteur a travers l'impedance faradique, qui suit l'echange rapide de charge electrique provoque par les chocs entre les billes de zinc et le collecteur. Les micrographies des electrodes polarisees et les mesures d'impedance montrent que les chocs des billes exercent en plus des effets sur les phenomenes interfaciaux qui controlent les reactions se deroulant sur l'electrode de zinc
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Books on the topic "Electrode de zinc"

1

United States. National Aeronautics and Space Administration., ed. [Frequency response measurements in battery electrodes]: [final report, 1 Feb. - 31 Dec. 1991]. [Washington, DC: National Aeronautics and Space Administration, 1992.

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Sagüés, Alberto A. Sprayed zinc galvanic anodes for concrete marine bridges substructures. Washington, DC: Strategic Highway Research Program, 1994.

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Misiewicz, Jan. Optical excitations in zinc phosphide (zn3p2). Wrocław: Wydawn. Politechniki Wrocławskiej, 1989.

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Ma, Jun. The deposition and electro-optical properties of thin film zinc sulphide phosphors. [s.l: The Author], 1998.

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Ganter, Barbara E. Thermokraft abschreckend kondensierter Legierungsschichten: Am Beispiel des amorphen Legierungssystems Zinn-Gold und binärer Edelmetall, 3d-Metall Spingläser. Konstanz: Hartung-Gorre, 1986.

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Patterson, James D. Electronic characterization of defects in narrow gap semiconductors: Final report, November 25, 1992 to November 25, 1994. Marshall Space Flight Center, AL: [National Aeronautics and Space Administration], George C. Marshall Space Flight Center, 1994.

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Patterson, James D. Electronic characterization of defects in narrow gap semiconductors: Comparison of electronic energy levels and formation energies in Mercury Cadmium Telluride Mercury Zinc Telluride and Mercury Zinc Selenide, semi-annual report, September 19, 1994 to March 19, 1995. [Washington, D.C: National Aeronautics and Space Administration, 1995.

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Bass, Kevin. Zinc electrode performance in modified electrolyte. 1990.

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Duffield, A. Optimisation of conductor modified zinc electrodes. 1986.

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Zachara, John Michael. A solution chemistry and electron spectroscopic study of zinc adsorption and precipitation on calcite. 1987.

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Book chapters on the topic "Electrode de zinc"

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Rajarathnam, Gobinath Pillai, and Anthony Michael Vassallo. "Bromine-Side Electrode Functionality." In The Zinc/Bromine Flow Battery, 63–79. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-287-646-1_5.

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Schröder, Daniel. "Detailed One-Dimensional Air Electrode Model." In Analysis of Reaction and Transport Processes in Zinc Air Batteries, 83–94. Wiesbaden: Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-12291-1_6.

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Tagbo, Philips Chidubem, Chukwujekwu Augustine Okaro, Cyril Oluchukwu Ugwuoke, Henry Uchenna Obetta, Onyeka Stanislaus Okwundu, Sabastine Ezugwu, and Fabian I. Ezema. "Zinc Anode in Hydrodynamically Enhanced Aqueous Battery Systems." In Electrode Materials for Energy Storage and Conversion, 47–70. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003145585-4.

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Wang, Yu Qiao, Chun Ping Liu, Kang Li, and Yue Ming Sun. "Fabrication and I-V Characteristics of Nanocrystalline Titania Electrode Sensitized by Zinc Phthalocyanine." In Experimental Mechanics in Nano and Biotechnology, 365–68. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.365.

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Takasaki, Y., K. Koike, and N. Masuko. "Mechanical Properties and Electrolytic Behavior of Pb-Ag-Ca Ternary Electrodes for Zinc Electro Winning." In Lead-Zinc 2000, 599–614. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118805558.ch40.

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Das, Sanghamitra, and Shrikrishna N. Joshi. "Experimental Investigations into Erosion of Zinc-Coated Brass Wire Electrode During WEDM of Ti-6Al-4 V Alloy." In Lecture Notes in Mechanical Engineering, 77–85. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-7150-1_7.

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Frackowiak, Elzbieta, and Krzysztof Jurewicz. "Improvement of Secondary Zinc Electrodes." In Electrochemical Engineering and Energy, 41–46. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-2514-1_4.

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Verbeken, K., M. Verhaege, and E. Wettinck. "Separation of Iron from a Zinc Sulphate Electrolyte by Combined Liquid-Liquid Extraction and Electro-Reductive Stripping." In Lead-Zinc 2000, 779–88. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118805558.ch52.

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Barbic, Paul, Leo Binder, Susanne Voß, Ferdinand Hofer, and Werner Grogger. "Thin-Film Zinc/Manganese Dioxide Electrodes." In Electroactive Materials, 45–52. Vienna: Springer Vienna, 2001. http://dx.doi.org/10.1007/978-3-7091-6211-8_5.

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Tian, Qing Hua, Xue Yi Guo, Ping Xue, Yu Song, and Lian Duan. "Electro-Deposition for Foamed Zinc Material from Zinc Sulfate Solution." In Materials Science Forum, 1669–72. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.1669.

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Conference papers on the topic "Electrode de zinc"

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Chamran, Fardad, Hong-Seok Min, Bruce Dunn, and Chang-Jin "CJ" Kim. "Zinc-air microbattery with electrode array of zinc microposts." In 2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2007. http://dx.doi.org/10.1109/memsys.2007.4433097.

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L., Sin L., M. K. Md Arshad, M. F. M. Fathil, R. Adzhri, M. Nuzaihan M. N., A. R. Ruslinda, Subash C. B. Gopinath, and U. Hashim. "Zinc oxide interdigitated electrode for biosensor application." In INTERNATIONAL CONFERENCE ON NANO-ELECTRONIC TECHNOLOGY DEVICES AND MATERIALS 2015 (IC-NET 2015). Author(s), 2016. http://dx.doi.org/10.1063/1.4948893.

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Dhanush, P. C., K. Brijesh, S. Vinayraj, and H. S. Nagaraja. "High stable zinc tungstate electrode for electrochemical supercapacitor." In ADVANCES IN MECHANICAL DESIGN, MATERIALS AND MANUFACTURE: Proceeding of the Second International Conference on Design, Materials and Manufacture (ICDEM 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0004023.

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Radha Shanmugam, Nandhinee, Sriram Muthukumar, and Shalini Prasad. "Zinc Oxide Nanostructures as Electrochemical Biosensors on Flexible Substrates." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9085.

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A novel flexible electrochemical biosensor for protein biomarker detection was successfully designed and fabricated on a nanoporous polyimide membrane using zinc oxide (ZnO). Nanostructures of ZnO were grown on microelectrode platform using aqueous solution bath. Electrochemical measurements were performed using gold, ZnO seed and nanostructured electrodes to study the influence of electrode surface area on biosensing performance. Feasibility analysis of sensor platforms was evaluated using high concentrations (in ng/mL) of troponin-T. The results showed that improved performance can be obtained on nanostructured platform by careful optimization of growth conditions. This study demonstrates the development of nanostructured ZnO flexible biosensors towards ultra-sensitive protein biosensing.
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Kiasari, Nima Mohseni, Jun Shen, Bobak Gholamkhass, Saeid Soltanian, and Peyman Servati. "Well-aligned zinc oxide nanowire arrays for transparent electrode applications." In 2011 IEEE Photonics Conference (IPC). IEEE, 2011. http://dx.doi.org/10.1109/pho.2011.6110671.

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Alshareef, Husam. "Electrode & Electrolyte Engineering in Rechargeable Aqueous Zinc-ion Batteries." In MATSUS23 & Sustainable Technology Forum València (STECH23). València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2022. http://dx.doi.org/10.29363/nanoge.matsus.2023.195.

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Schacht, Benny, Raf Verheyen, Jean-Pierre Kruth, and Bert Lauwers. "An Erosion Index for Wire Electrode Materials in EDM." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60798.

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In this paper, the authors propose an erosion index for wire materials or wire coatings. In sinking EDM research and practice, an erosion index is commonly available. In wire EDM few efforts have been made to identify possible electrode materials from the point of view of cutting speed. The index is based on physical understanding of the process and uses thermal properties of the electrode material, as is the case for the sinking EDM erosion index. The most important materials used as a coating for wire electrodes, like Zn, Cu, W and Mo, are analyzed and the proposed index is in good correlation with experimental cutting data, both from literature reports and own experiments. The theory can also be applied to alloys, such as brass (Cu-Zn) with different amounts of zinc.
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Mizutani, S., S. Nakashima, M. Iwaya, T. Takeuchi, S. Kamiyama, I. Akasaki, T. Kondo, et al. "Indium-zinc oxide transparent electrode for nitride-based light-emitting diodes." In SPIE OPTO, edited by Klaus P. Streubel, Heonsu Jeon, Li-Wei Tu, and Martin Strassburg. SPIE, 2013. http://dx.doi.org/10.1117/12.2003536.

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Sakhairi, Khairunnisa Nasirah Ahmad, Azrif Manut, Ahmad Sabirin Zoolfakar, and Maizatul Zolkapli. "Effect of Zinc Precursor on Interdigitated Electrode using Electrochemical Deposition Method." In 2021 IEEE Regional Symposium on Micro and Nanoelectronics (RSM). IEEE, 2021. http://dx.doi.org/10.1109/rsm52397.2021.9511608.

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Lin, Cheng-Li, Chi-Chang Tang, Shu-Ching Wu, Syuan-Ren Yang, Yi-Hsiu Lai, and Shich-Chuan Wu. "Resistive switching characteristics of zinc oxide (ZnO) resistive RAM with Al metal electrode." In 2011 IEEE 4th International Nanoelectronics Conference (INEC). IEEE, 2011. http://dx.doi.org/10.1109/inec.2011.5991798.

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Reports on the topic "Electrode de zinc"

1

Sutija, Dave P., Rolf H. Muller, and Charles W. Tobias. The development of a micropatterned electrode for studies of zinc electrodeposition. Office of Scientific and Technical Information (OSTI), December 1986. http://dx.doi.org/10.2172/7088787.

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Jain, R., F. McLarnon, and E. Cairns. Cycle-life improvement of Zn/NiOOH cells by the addition of Ca(OH) sub 2 to the zinc electrode. Office of Scientific and Technical Information (OSTI), August 1989. http://dx.doi.org/10.2172/5194778.

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Klein, M., and S. Viswanathan. Zinc/air battery R and D research and development of bifunctional oxygen electrode: Tasks I and II, Final report. Office of Scientific and Technical Information (OSTI), December 1986. http://dx.doi.org/10.2172/6539188.

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Stoyanova-Ivanova, Angelina, Alexander Vasev, Peter Lilov, Violeta Petrova, Yordan Marinov, Antonia Stoyanova, Galia Ivanova, and Valdek Mikli. Conductive Ceramic Based on the Bi-Sr-Ca-Cu-O HTSC System as an Additive to the Zinc Electrode Mass in the Rechargeable Ni-Zn Batteries – Electrochemical Impedance Study. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, February 2019. http://dx.doi.org/10.7546/crabs.2019.02.05.

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Murakoshi, Kei, Shozo Yanagida, and M. Capel. Interfacial electron transfer dynamics of photosensitized zinc oxide nanoclusters. Office of Scientific and Technical Information (OSTI), June 1997. http://dx.doi.org/10.2172/489691.

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Gummow. L51908 AC Grounding Effects on Cathodic Protection Performance in Pipeline Stations.pdf. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2001. http://dx.doi.org/10.55274/r0010269.

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Most AC powered equipment at pipeline stations and at motorized valve sites isrequired, by code, to be electrically grounded to one or more ground electrodes. These grounding systems are normally electrically bonded to the AC power distribution grid, which can be quite extensive. Piping, either intentionally or inadvertently, is often connected to the AC electrical grounding grid in pipeline stations. Grounding grid conductors are usually bare and composed of copper or tinned copper, and ground rod materials can consist of a wide variety of metals such as copper-clad steel, carbon steel, stainless steel, galvanized steel, and galvanic anode alloys of zinc and magnesium. The interconnection of these grounding materials to the piping can increase the current requirements of the cathodic protection system, distort the current distribution pattern and complicate the accurate measurement of the pipe potentials. Benefit: The primary objective of this research project was to assess the impact of various types of grounding materials on the performance and testing of cathodic protection systems. The two major issues in this regard were the effects on current requirements and the accuracy of pipe-to-soil potential measurements. In addition, some related issues investigated as follows:the electrical resistance of each groundrod-to-earth was to be measured to determine whether or not there were any changes in the resistance-to-earth as a result cathodic polarization;the potential of galvanized steel was to be measured with increasing zinc consumption to determine if there is a well defined relationship between potential and zinc consumption; the National Electrical Code (NEC) was to be reviewed with respect to the insertion of AC coupling/DC isolating devices in series between the piping and the electrical grounding network. The results of this investigation were intended toprovide information to design more effective cathodic protection facilities for piping in pipeline stations having electrical grounding systems, anddetermine whether or not the resistance of the electrical grounding system increases as a result of receiving cathodic protection, andrecommend pipe-to-soil potential survey techniques to maximize measurement accuracy in the presence of an AC grounding grid, andevaluate the use of DC isolators/AC couplers to interconnect the piping to either the secondary or primary AC grounding system.
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B. A. Brunett, J. C. Lund, J. M. Van Scyoc, N. R. Hilton, E. Y. Lee, and R. B. James. Low-cost cadmium zinc telluride radiation detectors based on electron-transport-only designs. Office of Scientific and Technical Information (OSTI), January 1999. http://dx.doi.org/10.2172/751018.

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Li, H., J. Q. Chambers, and D. T. Hobbs. Electroreduction of nitrate ions in concentrated sodium hydroxide solutions at lead, zinc, nickel, and phthalocyanine-modified electrodes. Office of Scientific and Technical Information (OSTI), December 1987. http://dx.doi.org/10.2172/665993.

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