Artykuły w czasopismach: „Electrochemical experiments”

1

Wang, Y., i J. L. Hudson. "Experiments on interacting electrochemical oscillators". Journal of Physical Chemistry 96, nr 21 (październik 1992): 8667–71. http://dx.doi.org/10.1021/j100200a082.

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Mikheev, N. B., A. N. Kamenskaya, I. A. Rumer, V. L. Novitschenko, A. Simon i Hj Mattausch. "Electrochemical Cocrystallization Experiments with Gd2Cl3". Zeitschrift für Naturforschung B 47, nr 7 (1.07.1992): 992–94. http://dx.doi.org/10.1515/znb-1992-0716.

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Gd2Cl3 is electrocrystallized from molten GdCl3 at 900 K with a current efficiency of 70% referring to the reaction 2GdCl3+3e⁻=Gd2Cl3+3Cl-. The reaction is used to determine cocrystallization coefficients for trivalent rare earths and actinoids (Y, Nd, Cm, Pu), divalent lanthanoids (Eu, Yb), and Sr. The oxidation potential for the above reaction is determined as 2.65 ≤ E° ≤ 2.68 V.

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Armstrong, Fraser A. "Dynamic electrochemical experiments on hydrogenases". Photosynthesis Research 102, nr 2-3 (20.05.2009): 541–50. http://dx.doi.org/10.1007/s11120-009-9428-0.

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Fahrenkrug, Eli, Daan Hein Alsem, Norman Salmon i Stephen Maldonado. "Electrochemical Measurements during In Situ Liquid-Electrochemical TEM Experiments". Microscopy and Microanalysis 23, S1 (lipiec 2017): 938–39. http://dx.doi.org/10.1017/s1431927617005359.

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DAROWICKI, K., i A. ZIELIŃSKI. "OPTIMAL WAVELET CHOICE IN ELECTROCHEMICAL EXPERIMENTS". Fluctuation and Noise Letters 06, nr 02 (czerwiec 2006): L215—L225. http://dx.doi.org/10.1142/s0219477506003306.

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In the recent years we witness great interest in merging electrochemical experiments with modern digital signal processing techniques. Wavelet analysis seems to be one of the most promising approaches. In the case of wavelets there are various families of analyzing functions which can be selected to suit given experiment demands. In the paper the authors present comparison of results of utilization of different wavelets in electrochemical noise analysis.

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Nagy, G., i L. Nagy. "Scanning electrochemical microscopy: a new way of making electrochemical experiments". Fresenius' Journal of Analytical Chemistry 366, nr 6-7 (30.03.2000): 735–44. http://dx.doi.org/10.1007/s002160051567.

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Palleschi, G., M. Mascini, L. Bernardi, G. Bombardieri i A. M. De Luca. "Glucose Clamp Experiments With Electrochemical Biosensors". Analytical Letters 22, nr 5 (kwiecień 1989): 1209–20. http://dx.doi.org/10.1080/00032718908051401.

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Ziegler, J. F., T. H. Zabel, J. J. Cuomo, V. A. Brusic, G. S. Cargill, E. J. O’Sullivan i A. D. Marwick. "Electrochemical experiments in cold nuclear fusion". Physical Review Letters 62, nr 25 (19.06.1989): 2929–32. http://dx.doi.org/10.1103/physrevlett.62.2929.

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Bullock, J. S., G. L. Powell i D. P. Hutchinson. "Electrochemical factors in cold fusion experiments". Journal of Fusion Energy 9, nr 3 (wrzesień 1990): 275–80. http://dx.doi.org/10.1007/bf01059243.

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Nouraei, S., i S. Roy. "Design of experiments in electrochemical microfabrication". Electrochimica Acta 54, nr 9 (marzec 2009): 2444–49. http://dx.doi.org/10.1016/j.electacta.2008.11.058.

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Marla, Deepak. "Modeling of electrochemical micromachining: comparison to experiments". Journal of Micro/Nanolithography, MEMS, and MOEMS 7, nr 3 (1.07.2008): 033015. http://dx.doi.org/10.1117/1.2964215.

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Fekete, Éva, Béla Lengyel, Tamás Cserfalvi i Tamás Pajkossy. "Electrochemical dissolution of aluminium in electrocoagulation experiments". Journal of Solid State Electrochemistry 20, nr 11 (16.04.2016): 3107–14. http://dx.doi.org/10.1007/s10008-016-3195-6.

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Hassissene, S., E. Chainet i B. Nguyen. "Corrosion potential analysis during electrochemical cementation experiments". Electrochimica Acta 39, nr 1 (styczeń 1994): 151–53. http://dx.doi.org/10.1016/0013-4686(94)85022-4.

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Fahrenkrug, Eli, Daan Hein Alsem, Norman Salmon i Stephen Maldonado. "Electrochemical Measurements in In Situ TEM Experiments". Journal of The Electrochemical Society 164, nr 6 (2017): H358—H364. http://dx.doi.org/10.1149/2.1041706jes.

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MIKHEEV, N. B., A. N. KAMENSKAYA, I. A. RUMER, V. L. NOVITSCHENKO, A. SIMON i HJ MATTAUSCH. "ChemInform Abstract: Electrochemical Cocrystallization Experiments with Gd2Cl3." ChemInform 23, nr 42 (21.08.2010): no. http://dx.doi.org/10.1002/chin.199242017.

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Fadaei, E., M. Emamy, C. Dehghanian i M. Karshenas. "Effects of Titanium Combined with Aluminium on the Electrochemical Properties and Efficiency of Mg-Mn Anodes". Advanced Materials Research 264-265 (czerwiec 2011): 783–88. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.783.

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Magnesium sacrificial anodes are widely used in cathodic protection systems. In the present work, samples of Mg-0.7% Mn- x% Al- y% Ti (x,y = 0-0.6) alloys were electrochemically characterized to evaluate their performance as magnesium sacrificial anodes. The experiments focused on the influence of aluminium and titanium contents on the electrochemical behavior and efficiency of anodes. Aluminium and titanium was used in different concentrations ranging from 0.15 to 0.60 at.%. Short-term electrochemical tests, ASTM G97-89, as well as polarization curves were performed to obtain electrochemical behavior and efficiency and to reveal any tendencies to be passive. It is shown that by increasing titanium content an improvement of electrochemical properties of magnesium anode such as current capacity and electrochemical efficiency can be obtained.

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Wu, Ting-Nien. "Electrochemical removal of pentachlorophenol in a lab-scale platinum electrolyzer". Water Science and Technology 62, nr 10 (1.11.2010): 2313–20. http://dx.doi.org/10.2166/wst.2010.096.

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This study is focused on the removal of pentachlorophenol from its aqueous phase by electrochemically induced degradation with Pt electrodes. The objective of this study was to contrast the electrochemical removal of pentachlorophenol at the oxidative and the reductive potentials, and further to understand how to apply the electrochemical treatment on PCP degradation. Lab experiments were conducted in a Pt electrolyzer, and the voltage source was supplied and precisely controlled by an electrochemical analyzer. In these experiments, the variables including electrolyte species, pH, voltage supply, and reaction time were examined to compare the efficiency of pentachlorophenol removal. Experimental results showed that pentachlorophenol was completely degraded after being electrolyzed for 1 h at−1.5 V in a 0.5 M KCl solution, while the removal of pentachlorophenol is negligible under the similar condition when 0.5 M NaNO3 or Na2CO3 was used as the electrolyte. The electrolyte concentration below 0.5 M is unfavourable for the electrochemical removal of pentachlorophenol. The removal efficiency of pentachlorophenol is slightly affected by pH, and the strong basic environment might impede the degradation of pentachlorophenol. Comparing with those under positive potentials, the experiments conducted under negative potentials have shown a better removal of pentachlorophenol with a higher current efficiency. It implies that pentachlorophenol degradation followed the reductive pathway. Based on the analysis of GC/MS, the intermediates of pentachlorophenol degradation were identified as 1,2-dichlorocyclohexane and 2-chlorocyclohexanol.

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Wu, Jian Min, i Jia Wen Xu. "Fundamental Experimental Study on Numerical-Control Electrochemical Finish Machining for Integral Impeller Blade". Applied Mechanics and Materials 55-57 (maj 2011): 1275–80. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.1275.

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While the surface of integral impeller blade was electrochemically machined, cathode cannot rotate in accordance with other movement axes, which results in nonuniformity in velocity of electrolyte and normal direction of the machining blade surface, thereby causing inaccuracy in the machined blade surface. In order to solve this problem, the shaping law was studied in Electrochemical Finish Machining. Then relative positions between cathode slot and blade surface were analyzed during the process of Electrochemical Machining (ECM). Three parameters, namely feed direction, feed velocity and initial machining inter-electrode gap, were adjusted to conduct the fundamental experiments when direction of cathode slot was changed. Afterwards machining accuracy as well as surface quality of workpiece was analyzed. Finally according to experimental results, direction of cathode slot was determined practically in electrochemical machining process and the integral impeller blades meeting the requirement were electrochemically machined.

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Jegdic, Bore, Dragutin Drazic, Jovan Popic i Velimir Radmilovic. "Structural effects of metallic chromium on its electrochemical behavior". Journal of the Serbian Chemical Society 72, nr 6 (2007): 563–78. http://dx.doi.org/10.2298/jsc0706563j.

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Chromium dissolution in aqueous sulfuric acid solution of pH 1 was studied electrochemically on chromium electrodes with different crystallographic structures. A slow potentiodynamic method was used for the electrochemical measurements in deaerated solutions (purgedwith nitrogen),while the Cr(III) ions in the solution after the corrosion were determined by atomic absorption spectrometry. Three electrode materials with a very dominant crystallite orientation resembling single crystal structures (i.e., 111 and 110) confirmed by the electron backscattering diffraction (EBSD), were used in the experiments. The (111) structures were somewhat more active electrochemically (both anodic and cathodic) than the (110) structure. However, Cr electrochemically deposited in standard plating bath, assumed from literature data to has also the (111) structure, was more than 4 times active for anodic dissolution and, by the same number, less active for cathodic hydrogen evolution. The concentrations of Cr(III) ions determined in the solution after definite times of corrosion of all the materials showed almost two times larger dissolution rates than observed electrochemically by three different electrochemical methods (Wagner-Traud, Stern-Geary, electrochemical impedance spectroscopy). This is explained by the simultaneous occurrence of potential independent chemical dissolution of Cr, by a direct reaction of metallic Cr with H2O molecules, proposed a long time ago by Kolotyrkin and coworkers. .

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Blaszczyk, T., i J. Maciej Czajkowski. "A system for data acquisition in electrochemical experiments". Measurement Science and Technology 4, nr 4 (1.04.1993): 451–55. http://dx.doi.org/10.1088/0957-0233/4/4/002.

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Hjelmfelt, A., i J. Ross. "Electrochemical experiments on thermodynamics at nonequilibrium steady states". Journal of Physical Chemistry 98, nr 39 (wrzesień 1994): 9900–9902. http://dx.doi.org/10.1021/j100090a026.

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Geringer, J., J. Pellier, M. L. Taylor i D. D. Macdonald. "Electrochemical Impedance Spectroscopy: Insights for fretting corrosion experiments". Tribology International 68 (grudzień 2013): 67–76. http://dx.doi.org/10.1016/j.triboint.2012.10.027.

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Mani, Ali, i Karen May Wang. "Electroconvection Near Electrochemical Interfaces: Experiments, Modeling, and Computation". Annual Review of Fluid Mechanics 52, nr 1 (5.01.2020): 509–29. http://dx.doi.org/10.1146/annurev-fluid-010719-060358.

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Many electrochemical and microfluidic systems involve voltage-driven transport of ions from a fluid electrolyte toward an ion-selective interface. These systems are governed by intimate coupling between fluid flow, mass transport, and electrostatic effects. When counterions are driven toward a selective interface, this coupling is shown to lead to a hydrodynamic instability called electroconvection. This phenomenon is an example of electrochemistry inducing flow, which in turn affects the transport and ohmic resistance of the bulk electrolyte. These effects have implications in a wide range of applications, including ion separation, electrodeposition, and microfluidic processes that incorporate ion-selective elements. This review surveys recent investigations of electroconvection with an emphasis on quantitative experimental and theoretical analyses and computational modeling of this phenomenon. Approaches for control and manipulation of this phenomenon in canonical settings are also discussed.

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Bottomley, P. D. W., i M. Coquerelle. "Electrochemical experiments on UO2 corrosion in aqueous solutions". Corrosion Science 35, nr 1-4 (styczeń 1993): 377–86. http://dx.doi.org/10.1016/0010-938x(93)90170-l.

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Kreysa, G., G. Marx i W. Plieth. "A critical analysis of electrochemical nuclear fusion experiments". Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 266, nr 2 (lipiec 1989): 437–50. http://dx.doi.org/10.1016/0022-0728(89)85087-9.

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Tooley, Christian, Charles Gasperoni, Sabrina Marnoto i Jeffrey Halpern. "Evaluation of Metal Oxide Surface Catalysts for the Electrochemical Activation of Amino Acids". Sensors 18, nr 9 (18.09.2018): 3144. http://dx.doi.org/10.3390/s18093144.

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Electrochemical detection of amino acids is important due to their correlation with certain diseases; however, most amino acids require a catalyst to electrochemically activate. One common catalyst for electrochemical detection of amino acids are metal oxides. Metal oxide nanoparticles were electrodeposited onto glassy carbon and platinum working electrodes. Cyclic voltammetry (CV) experiments in a flow cell were performed to evaluate the sensors’ ability to detect arginine, alanine, serine, and valine at micromolar and nanomolar concentrations as high as 4 mM. Solutions were prepared in phosphate buffer saline (PBS) and then 100 mM NaOH. Specifically, NiO surfaces were responsive to amino acids but variable, especially when exposed to arginine. Polarization resistance experiments and scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) data indicated that arginine accelerated the corrosion of the NiO catalyst through the formation of a Schiff base complex.

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Skrabalak, Grzegorz, Maria Zybura, Józef Dziedzic, Jan Czekaj i Andrzej Stwora. "Precise electrochemical reaming of long holes". Mechanik 90, nr 12 (11.12.2017): 1110–12. http://dx.doi.org/10.17814/mechanik.2017.12.189.

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The paper presents results of experiments of electrochemical reaming of long holes. During performed experiments, there was verified the physico-mathematical model of the machining process used for initial selection of the range of technological parameters applied for the machining tests. There were also conducted experiments focusing on the optimization of the machining parameters of electrochemical reaming process in order to achieve holes with desired geometry and proper inner surface quality.

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Labou, D., i S. G. Neophytides. "Catalytic and electrocatalytic activity of Pt-Ru/C electrode for hydrogen oxidation in alkaline and acid aqueous electrolytes: EMSI and EPOC effects". Chemical Industry and Chemical Engineering Quarterly 14, nr 2 (2008): 145–52. http://dx.doi.org/10.2298/ciceq0802145l.

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The kinetics of the oxidation of H2 on PtRu/C gas-diffusion electrode was studied by interfacing the electrode with aqueous electrolytes at different pH values. The conducting electrolytes were KOH and HClO4 aqueous solutions with different concentrations. It is shown that the nature of the aqueous electrolyte plays the role of an active catalyst support for the PtRu/C electrode which drastically affects its catalytic properties. During the aforementioned interaction, termed electrochemical metal support interaction (EMSI), the electrochemical potential of the electrons at the catalyst Fermi level is equalized with the electrochemical potential of the solvated electron in the aqueous electrolyte. The electrochemical experiments carried out at various pH values showed that the electrochemical promotion catalysis (EPOC) is more intense when the catalyst-electrode is interfaced with electrolytes with high pH values where the OH ionic conduction prevails. It was concluded that similar to the solid state electrochemical systems EPOC proceeds through the formation of a polar adsorbed promoting layer of OH ? -, electrochemically supplied by the OH species, at the three phase boundaries of the gas exposed gas diffusion catalyst-electrode surface.

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Streb, Moritz, Mathilda Ohrelius, Matilda Klett i Göran Lindbergh. "Online Aging Diagnostics Using Optimally Designed Experiments". ECS Meeting Abstracts MA2022-02, nr 3 (9.10.2022): 353. http://dx.doi.org/10.1149/ma2022-023353mtgabs.

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Degradation of lithium-ion batteries is the result of many complex phenomena occurring simultaneously at varying time and length scales. The underlying electrochemical and mechanical phenomena have received much attention from researchers [1]. Physics-based models of these effects support the mechanistic understanding of degradation modes and can thereby help reduce their severity. Few studies target changing electrochemical parameters such as diffusion coefficients or reaction rate constants that have a direct impact on model accuracy and manifest themselves in observable aging. Lyu et al. [2] used a simplified electrochemical model and monitored battery degradation by following changes in diffusion time constants, electrode balancing, reaction rate coefficients, and ohmic resistance. However, several of the parameters they attempted to track could only be identified with low accuracy as they used the same data-set to identify all parameters. In this study, we investigate parameters of a full order Newman-type model [3] over the course of a batteries lifetime under real-world load-cycles. To ensure parameter identifiability, optimally designed experiments are used for parameter estimation. In a previous study [4] the feasibility of optimal experiment design for parametrization of electrochemical battery models was demonstrated. We now extend this work and re-evaluate key parameters over the course of an aging study on commercial, nickel-rich 18650 lithium-ion batteries. We highlight how quantifying changes in physical battery parameters can extend standard performance metrics for a batteries state-of-health by, e.g., including degradation in rate-capability. Additionally, the importance of battery usage conditions such as C-rate or state-of-charge window on model parameter trajectories is investigated and their relationship with conventional performance metrics such as the bulk cell resistance or rate-capability determined. Quantifying how specific mechanisms contribute to apparent capacity or power fade is a major step towards battery lifetime optimization. This could enable designs more tailored for specific applications and significantly extend batteries useful lifetime. Furthermore, updating parameters is essential for electrochemical control strategies relying on accurate model predictions of battery states as illustrated in Figure 1. This re-calibration would make a battery management system aging-sensitive and enable more efficient utilization and a physics-informed state-of-health. Figure 1: The central plot shows how parameters change during aging. If this change is not considered, model performance deteriorates between beginning-of-life (BOL) and end-of-life (EOL) (in blue, right-hand side). This is normally handled by using conservative battery management systems and over-sizing systems. The proposed strategy (orange) achieves higher model accuracy during the entire useful life and the parameter estimates can be used to formulate an extended state-of-health. References: [1] J. Vetter, P. Novák, M.R. Wagner, C. Veit, K.C. Möller, J.O. Besenhard, M. Winter, M. Wohlfahrt-Mehrens, C. Vogler, A. Hammouche, Ageing mechanisms in lithium-ion batteries, J. Power Sources. 147 (2005) 269–281. https://doi.org/10.1016/j.jpowsour.2005.01.006. [2] C. Lyu, Y. Song, J. Zheng, W. Luo, G. Hinds, J. Li, L. Wang, In situ monitoring of lithium-ion battery degradation using an electrochemical model, Appl. Energy. 250 (2019) 685–696. https://doi.org/10.1016/j.apenergy.2019.05.038. [3] M. Doyle, T. Fuller, J. Newman, Modelling of the Galvanostatic Charge and Discharge of the Lithium/Polymer/Insertion Cell, J. Electrochem. Soc. 140 (1993) 1526–1533. https://doi.org/10.1149/1.2221597. [4] M. Streb, M. Ohrelius, M. Klett, G. Lindbergh, Improving Li-ion Battery Parameter Estimation by Global Optimal Experiment Design (Manuscript submitted), (2022). Figure 1

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Wu, Yanju, Zikang Li, Dongyang Han, Qunpeng Duan i Fei Wang. "A Robust Electrochemical Sensor for Determination of Thiamethoxam Based on Electrochemical Reduced Graphene Oxide-Cationic Pillar[6]arene Composite Film". Journal of The Electrochemical Society 168, nr 12 (1.12.2021): 126506. http://dx.doi.org/10.1149/1945-7111/ac3abd.

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On the surface of a glassy carbon electrode, electrochemically reduced graphene oxide-cationic pillar[6]arene (ErGO-CP6) composite film was constructed using a pulsed potential method. UV–vis spectra, SEM, Raman spectra and electrochemical experiments were applied to characterize the composite film. It was then used as a new electrochemical sensing platform for determination of thiamethoxam. Due to the synergistic effect of ErGO and CP6, this composite film shows a higher sensitivity and better selectivity toward thiamethoxam than that of ErGO film. The linear range from 1.0 × 10−7 to 1.3 × 10−5 mol l−1 was obtained by differential pulse voltammetry. Meanwhile, the method was applied to cucumber and tomato samples in a recovery test. The recovery was between 92.0% and 98.7%, and the results are satisfactory. This study presents a promising electrochemical sensing platform for rapid and sensitive analysis of thiamethoxam.

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Li, Xiao Hai, Bei Bei Xue, Shu Ming Wang i Li Jie Zhao. "Experiments on Electrochemical Micromachining with Ultra-Short Pulse Current". Applied Mechanics and Materials 868 (lipiec 2017): 192–97. http://dx.doi.org/10.4028/www.scientific.net/amm.868.192.

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During electrochemical micromachining (EMM) , materials are removed in the form of ions based on the anodic dissolution mechanism, so it should be a promising technique for micromachining . A new kind of experimental setup of EMM was developed successfully, which is in fact a multifunctional machine tool, and micro-electrode tool can also be fabricated on the same machine tool. The developed experimental setup for EMM consists of feed unit, micro electrode fabrication unit, ultra-short pulse power supply, short circuit detection of machining current and so on. The experiments on micro electrochemical milling (micro EC milling) of typical micro-structure samples by the micro electrode tool rotating like micro milling cutter were carried out. The new feed strategy of micro EC milling was adopted. The comparative process experiments were carried out to explore the machining laws to meet the requirements for micromachining. At optimized parametric combinations, the micro triangle and the micro beam with width of about 50μm were milled on the stainless plate 304 by micro EC milling.

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Hakkarainen, Tero J. "Corrosion of Reinforcing Steel in Concrete - Electrochemical Laboratory Experiments". Materials Science Forum 44-45 (styczeń 1991): 347–56. http://dx.doi.org/10.4028/www.scientific.net/msf.44-45.347.

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Perone, S. P., i C. L. Ham. "Measurement and control of information content in electrochemical experiments". Journal of Research of the National Bureau of Standards 90, nr 6 (listopad 1985): 531. http://dx.doi.org/10.6028/jres.090.057.

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Watson, S. W., i B. W. Madsen. "Applicability of Reference Electrode Types in Transient Electrochemical Experiments". CORROSION 48, nr 9 (wrzesień 1992): 727–33. http://dx.doi.org/10.5006/1.3315993.

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Kristal, Jiri, Roman Kodym, Karel Bouzek, Vladimir Jiricny i Jiri Hanika. "Electrochemical Microreactor Design for Alkoxylation Reactions—Experiments and Simulations". Industrial & Engineering Chemistry Research 51, nr 4 (24.08.2011): 1515–24. http://dx.doi.org/10.1021/ie200654c.

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Kiss, István Z., Wen Wang i J. L. Hudson. "Experiments on Arrays of Globally Coupled Periodic Electrochemical Oscillators". Journal of Physical Chemistry B 103, nr 51 (grudzień 1999): 11433–44. http://dx.doi.org/10.1021/jp992471h.

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Gimsa, Jan, Beate Habel, Ute Schreiber, Ursula van Rienen, Ulf Strauss i Ulrike Gimsa. "Choosing electrodes for deep brain stimulation experiments–electrochemical considerations". Journal of Neuroscience Methods 142, nr 2 (marzec 2005): 251–65. http://dx.doi.org/10.1016/j.jneumeth.2004.09.001.

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Li, Yuan Bo, Yong Jun Zhang i Zhong Ning Guo. "Design and its Experiments of Micro Electrochemical Machining System". Advanced Materials Research 97-101 (marzec 2010): 2505–8. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.2505.

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A micro Electrochemical Machining (ECM) system has been developed, and macro/micro complex feed mechanism has been presented in order to achieve high-resolution. A nanosecond pulse power supply for micro-ECM has been developed, and the minimum pulse width can reach 50 ns. Complementary chopper circuit has been designed to avoid waveform distortion, which can achieve higher pulse frequency. A series of ECM experiments using the machining system have been carried out, and results of tests have proved that high-resolution spindle, and high frequency, short pulse width power supply help to achieve better quality surface, higher machining accuracy.

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Ambrosi, Elia, Philip Bartlett, Alexandra I. Berg, Stefano Brivio, Geoffrey Burr, Sweety Deswal, Jonas Deuermeier i in. "Electrochemical metallization ReRAMs (ECM) - Experiments and modelling: general discussion". Faraday Discussions 213 (2019): 115–50. http://dx.doi.org/10.1039/c8fd90059k.

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Lucas, M., J. Stafiej, C. Slim, S. Delpech i D. di Caprio. "Cellular automata modeling of Scanning Electrochemical Microscopy (SECM) experiments". Electrochimica Acta 145 (listopad 2014): 314–18. http://dx.doi.org/10.1016/j.electacta.2014.08.074.

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Pébère, Nadine, i Vincent Vivier. "Local Electrochemical Measurements in Bipolar Experiments for Corrosion Studies". ChemElectroChem 3, nr 3 (11.11.2015): 415–21. http://dx.doi.org/10.1002/celc.201500375.

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Wang, Yan Gang, Xing Hua Tong, Yong Jiang, Yong Liu i Lin Sen Zhu. "Study on Corrosion Behavior of Various Steels Used by Ocean Wave Energy Equipment". Advanced Materials Research 591-593 (listopad 2012): 1030–33. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.1030.

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The corrosion characteristics of various steels used by ocean wave energy equipment in sea water are investigated by electrochemical tests in this paper. The electrochemical experiments are carried out to research the corrosion rules of Q235, 20# steel, 16Mn and X42 through contrast experiments. Polarization curves and electrochemical impedance spectroscopy (EIS) are got by electrochemical workstation. Corrosion rates and corrosion potentials are analyzed from the polarization curves, and corrosion rules are founded. In addition, EIS is analyzed, and the analysis results are consistent with the results of polarization curves.

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Upadhyay, Vinod, Julio Mendez, Siva Palani, Keith Legg i Alan Rose. "Al-Rich Primer for Al Alloy: Electrochemical and Computational Investigation". ECS Meeting Abstracts MA2022-02, nr 10 (9.10.2022): 682. http://dx.doi.org/10.1149/ma2022-0210682mtgabs.

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Analogous to Zn-rich primer for steel substrate, Al-rich primer is currently being investigated for their efficiency in protecting Aluminum based substrates. Various such primer systems were prepared with varying pigment size, with and without surface treatment. Electrochemical measurements such as open circuit potential, electrochemical impedance spectroscopy, and potentiostatic experiments were performed to obtain primer efficiency, such as throwing power and protection longevity. Data from electrochemical experiments will be used as boundary conditions and input parameters for computational modeling of the primer systems to investigate if results obtained from electrochemical measurements is complemented by computational results.

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Borkiewicz, Olaf J., Kamila M. Wiaderek, Peter J. Chupas i Karena W. Chapman. "Best Practices for Operando Battery Experiments: Influences of X-ray Experiment Design on Observed Electrochemical Reactivity". Journal of Physical Chemistry Letters 6, nr 11 (4.06.2015): 2081–85. http://dx.doi.org/10.1021/acs.jpclett.5b00891.

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Feeney, Stanley G., Joelle M. J. LaFreniere i Jeffrey Mark Halpern. "Perspective on Nanofiber Electrochemical Sensors: Design of Relative Selectivity Experiments". Polymers 13, nr 21 (27.10.2021): 3706. http://dx.doi.org/10.3390/polym13213706.

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The use of nanofibers creates the ability for non-enzymatic sensing in various applications and greatly improves the sensitivity, speed, and accuracy of electrochemical sensors for a wide variety of analytes. The high surface area to volume ratio of the fibers as well as their high porosity, even when compared to other common nanostructures, allows for enhanced electrocatalytic, adsorptive, and analyte-specific recognition mechanisms. Nanofibers have the potential to rival and replace materials used in electrochemical sensing. As more types of nanofibers are developed and tested for new applications, more consistent and refined selectivity experiments are needed. We applied this idea in a review of interferant control experiments and real sample analyses. The goal of this review is to provide guidelines for acceptable nanofiber sensor selectivity experiments with considerations for electrocatalytic, adsorptive, and analyte-specific recognition mechanisms. The intended presented review and guidelines will be of particular use to junior researchers designing their first control experiments, but could be used as a reference for anyone designing selectivity experiments for non-enzymatic sensors including nanofibers. We indicate the importance of testing both interferants in complex media and mechanistic interferants in the selectivity analysis of newly developed nanofiber sensor surfaces.

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Rao, Si Xian, Su Ping Yang, Ji Bin Tong i Jing Ru Wang. "Cracking Behavior of Oxide Films under Applied Stress". Advanced Materials Research 284-286 (lipiec 2011): 671–75. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.671.

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Cracking behaviors of oxide films on A3, 30CrMnSiA steel under applied stress were investigated in this paper. Theoretical deductions confirmed that critical cracking conditions for oxide films on A3 and 30CrMnSiA steel did exist. Electrochemical tensile experiments in 3%NaCl aqueous solution showed that the critical cracking stress for oxide film on A3 steel is about 220MPa,the critical cracking stress for oxide film on 30CrMnSiA steel is about 80MPa.In-situ dynamic tensile experiments verified the correctness of the experiments results in the electrochemical tensile experiments.

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González-García, Jose, Angel Frías-Ferrer, Vicente Montiel, Antonio Aldaz i Juan A. Conesa. "Development of a model for the characterization of fluid dispersion in electrochemical reactors". Journal of Hydroinformatics 4, nr 4 (1.10.2002): 281–95. http://dx.doi.org/10.2166/hydro.2002.0027.

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This paper analyses the hydrodynamic behaviour of electrochemical reactors by simulating stimulus–response experiments. The experiments were performed with a simple experimental arrangement to generate data (Residence Time Distribution (RTD) curves) from electrolytic conductivity measurements. The multiparametric model proposed and the Matlab program developed allow the study of electrochemical reactors using three-dimensional electrodes, providing values of characteristic parameters of the materials, such as porosity and compressibility. The study of the reactor also permits modelling of the electrochemical reactions that will be produced inside it.

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Skoczko, Iwona, i Ewa Szatyłowicz. "Experiments on Water Stabilization". Proceedings 16, nr 1 (11.06.2019): 3. http://dx.doi.org/10.3390/proceedings2019016003.

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The aim of the study was assessment of groundwater stabilization. Corrosive water effects on metals include complex electrochemical and biochemical processes. None of the water components remain indifferent to the metal and can accelerate or delay its corrosion. On the basis of the conducted tests of water samples, the aggressiveness and corrosivity indicators were calculated. Conducted research included analyses of raw and treated water. Raw water was taken as groundwater. Then it was treated in individual and complex processes such as aeration, filtration and ion exchange. Water aggressiveness and corrosion level were introduced by the Langelier Saturation Index (LSI), the Ryznar Stability Index (RI), the Larsoni–Skold Index (LI) and the Singley Index (SI). Obtained results proved that used water treatment processes must be improved through additional aeration and filtration with a dolomite bed. A simple system typical for industrial water is not enough to reach stable water because of remaining aggressiveness and corrosion.

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De La Fuente, María José, Leslie K. Daille, Rodrigo De la Iglesia, Magdalena Walczak, Francisco Armijo, Gonzalo E. Pizarro i Ignacio T. Vargas. "Electrochemical Bacterial Enrichment from Natural Seawater and Its Implications in Biocorrosion of Stainless-Steel Electrodes". Materials 13, nr 10 (19.05.2020): 2327. http://dx.doi.org/10.3390/ma13102327.

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Microbial electrochemical technologies have revealed the opportunity of electrochemical enrichment for specific bacterial groups that are able to catalyze reactions of interest. However, there are unsolved challenges towards their application under aggressive environmental conditions, such as in the sea. This study demonstrates the impact of surface electrochemical potential on community composition and its corrosivity. Electrochemical bacterial enrichment was successfully carried out in natural seawater without nutrient amendments. Experiments were carried out for ten days of exposure in a closed-flow system over 316L stainless steel electrodes under three different poised potentials (−150 mV, +100 mV, and +310 mV vs. Ag/AgCl). Weight loss and atomic force microscopy showed a significant difference in corrosion when +310 mV (vs. Ag/AgCl) was applied in comparison to that produced under the other tested potentials (and an unpoised control). Bacterial community analysis conducted using 16S rRNA gene profiles showed that poised potentials are more positive as +310 mV (vs. Ag/AgCl) resulted in strong enrichment for Rhodobacteraceae and Sulfitobacter. Hence, even though significant enrichment of the known electrochemically active bacteria from the Rhodobacteraceae family was accomplished, the resultant bacterial community could accelerate pitting corrosion in 316 L stainless steel, thereby compromising the durability of the electrodes and the microbial electrochemical technologies.

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Palma-Cando, Alex, Ibeth Rendón-Enríquez, Michael Tausch i Ullrich Scherf. "Thin Functional Polymer Films by Electropolymerization". Nanomaterials 9, nr 8 (4.08.2019): 1125. http://dx.doi.org/10.3390/nano9081125.

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Intrinsically conducting polymers (ICPs) have been widely utilized in organic electronics, actuators, electrochromic devices, and sensors. Many potential applications demand the formation of thin polymer films, which can be generated by electrochemical polymerization. Electrochemical methods are quite powerful and versatile and can be utilized for investigation of ICPs, both for educational purposes and materials chemistry research. In this study, we show that potentiodynamic and potentiostatic techniques can be utilized for generating and characterizing thin polymer films under the context of educational chemistry research and state-of-the-art polymer research. First, two well-known bifunctional monomers (with only two linking sites)—aniline and bithiophene—and their respective ICPs—polyaniline (PANI) and polybithiophene (PBTh)—were electrochemically generated and characterized. Tests with simple electrochromic devices based on PANI and PBTh were carried out at different doping levels, where changes in the UV-VIS absorption spectra and color were ascribed to changes in the polymer structures. These experiments may attract students’ interest in the electrochemical polymerization of ICPs as doping/dedoping processes can be easily understood from observable color changes to the naked eye, as shown for the two polymers. Second, two new carbazole-based multifunctional monomers (with three or more linking sites)—tris(4-(carbazol-9-yl)phenyl)silanol (TPTCzSiOH) and tris(3,5-di(carbazol-9-yl)phenyl)silanol (TPHxCzSiOH)—were synthesized to produce thin films of cross-linked polymer networks by electropolymerization. These thin polymer films were characterized by electrochemical quartz crystal microbalance (EQCM) experiments and nitrogen sorption, and the results showed a microporous nature with high specific surface areas up to 930 m2g−1. PTPHxCzSiOH-modified glassy carbon electrodes showed an enhanced electrochemical response to nitrobenzene as prototypical nitroaromatic compound compared to unmodified glassy carbon electrodes.

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