Thematische Bibliographien / Coulomb efficiency

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Auswahl der wissenschaftlichen Literatur zum Thema „Coulomb efficiency“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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Zeitschriftenartikel zum Thema "Coulomb efficiency"

You, Gongchuan, and Liang He. "High Performance Electrolyte for Iron-Ion batteries." Academic Journal of Science and Technology 5, no. 2 (2023): 244–47. http://dx.doi.org/10.54097/ajst.v5i2.6995.

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Aqueous rechargeable batteries have received widespread attention due to their excellent power density, simple manufacturing process, and inexpensive electrolyte. Iron-ion batteries are expected to meet the goals of high safety, low cost, and non-toxicity pursued in the field of rechargeable batteries. However, passivation, parasitic hydrogen evolution reaction (HER), and low electroplating efficiency (50%-70%) limit the improvement of electrochemical performance, which greatly restricts their practical application. In this study, a high-performance electrolyte for iron-ion batteries was prepa

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Bobrovskij, Igor, Alexander Khaimovich, Nikolaj Bobrovskij, J. Antonio Travieso-Rodriguez, and Fedor Grechnikov. "Derivation of the Coefficients in the Coulomb Constant Shear Friction Law from Experimental Data on the Extrusion of a Material into V-Shaped Channels with Different Convergence Angles: New Method and Algorithm." Metals 12, no. 2 (2022): 239. http://dx.doi.org/10.3390/met12020239.

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The combined Coulomb constant shear friction law is widely used in commercial and research software for the finite-element analysis (FEA) of metalworking and is naturally more flexible and hence, more relevant to real-life manufacturing than the individual Coulomb and constant shear friction laws. In this work, a new mathematical model of coefficients in the Coulomb constant shear friction law for extruding a metal through narrow V-shaped channels with small convergence angles has been developed and evaluated and compared with laboratory measurements. The extrusion of the model material (lead)

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LAURITSCH, G., and P. G. REINHARD. "AN FFT SOLVER FOR THE COULOMB PROBLEM." International Journal of Modern Physics C 05, no. 01 (1994): 65–75. http://dx.doi.org/10.1142/s0129183194000064.

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A solution of the Coulomb problem in Fourier representation is given. The problems with the long-range parts of the Coulomb potential are circumvented by a separate handling of them. This allows the Fourier representation to develop its typical efficiency and robusteness.

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Shen, Ding, Mengyuan Jia, Mingyue Li, et al. "High Coulomb Efficiency Sn–Co Alloy/rGO Composite Anode Material for Li–ion Battery with Long Cycle–Life." Molecules 28, no. 9 (2023): 3923. http://dx.doi.org/10.3390/molecules28093923.

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The low cycle performance and low Coulomb efficiency of tin-based materials confine their large–scale commercial application for lithium–ion batteries. To overcome the shortage of volume expansion of pristine tin, Sn–Co alloy/rGO composites have been successfully synthesized by chemical reduction and sintering methods. The effects of sintering temperature on the composition, structure and electrochemical properties of Sn–Co alloy/rGO composites were investigated by experimental study and first-principles calculation. The results show that Sn–Co alloys are composed of a large number of CoSn and

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Song, P., P. Kraus, V. Kumar, and P. Dupont. "Analysis of Rigid-Body Dynamic Models for Simulation of Systems With Frictional Contacts." Journal of Applied Mechanics 68, no. 1 (2000): 118–28. http://dx.doi.org/10.1115/1.1331060.

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The use of Coulomb’s friction law with the principles of classical rigid-body dynamics introduces mathematical inconsistencies. Specifically, the forward dynamics problem can have no solutions or multiple solutions. In these situations, compliant contact models, while increasing the dimensionality of the state vector, can resolve these problems. The simplicity and efficiency of rigid-body models, however, provide strong motivation for their use during those portions of a simulation when the rigid-body solution is unique and stable. In this paper, we use singular perturbation analysis in conjun

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Engeda, A., and G. Franchetti. "Macroparticle Collisionality in PIC solver." Journal of Physics: Conference Series 2687, no. 6 (2024): 062028. http://dx.doi.org/10.1088/1742-6596/2687/6/062028.

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Abstract This paper presents a new numerical technique for the calculation of the Coulomb interaction between nearby charged particles. The efficiency of this method is demonstrated by distributing charged particles in a three dimensional sphere for an amount of particles, Npar , ranging from 1 × 105 to 1.6 × 106. Using the presented method, the computation of the mean field and Coulomb near field interaction can be performed separately.

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Zhou, Miaomiao, Jianjun Zhao, Xiaodong Wang, et al. "Enhanced stability of vanadium-doped Li_1.2Ni_0.16Co_0.08Mn_0.56O₂ cathode materials for superior Li-ion batteries." RSC Advances 12, no. 51 (2022): 32825–33. http://dx.doi.org/10.1039/d2ra05126e.

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Qing-Yun, Chen, Shi Dong-Dong, Zhang Yuan-Jun, and Wang Yun-Hai. "Phenol degradation on novel nickel-antimony doped tin dioxide electrode." Water Science and Technology 62, no. 9 (2010): 2090–95. http://dx.doi.org/10.2166/wst.2010.401.

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Nickel and antimony doped tin dioxide is a novel anodic material for its good performance of electrochemical ozone generation and direct electro-catalytic oxidation. Electro-catalytic oxidation of phenol on this novel nickel-antimony doped tin dioxide electrode is presented here. The morphology and composition of the electrode are characterized. The effects of applied current densities on phenol degradation rate, energy consumption and coulomb efficiency are discussed. In 0.1 M sulfuric acid, after 4 h electrolysis with current density of 25 mA cm−1, 90% phenol is removed. And with current den

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Yu, Chun Jian, Xiao Diao Huang, Cheng Gang Fang, and Ke Fang Dai. "Research on Damping and Vibration Characteristic of the Large and Precision NC Rotary Table." Advanced Materials Research 97-101 (March 2010): 1216–22. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1216.

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According to the current situation of acicular chip and high-frequency chattering of the NC rotary table while gear milling, rigidity and damping performances of the table were analyzed and the damping program of Coulomb friction was bring up. Online test of the gear milling cutting force can be used to establish dynamic model of circumferential vibration of the table with Coulomb friction. Then mechanism of restraining gear cutting chatter by damping of Coulomb friction and acicular chip generating mechanism were exposed. Furthermore, relationship between backlash and rotary rigidity of the t

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Zimbovskaya, Natalya A. "Large enhancement of thermoelectric effects in multiple quantum dots in a serial configuration due to Coulomb interactions." Journal of Physics: Condensed Matter 34, no. 25 (2022): 255302. http://dx.doi.org/10.1088/1361-648x/ac640c.

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Abstract In the present work we theoretically study Seebeck effect in a set of several quantum dots in a serial configuration coupled to nonmagnetic conducting electrodes. We focus on the combined effect of intra-dot Coulomb interactions between electrons and the number of dots on the thermopower (S) and the thermoelectric figure of merit (ZT) of the considered transport junction within the Coulomb blockade regime. We show that a strong enhancement of the both S and ZT may occur when the chemical potential of electrodes is situated within the Coulomb gap in the electron transmission spectrum t

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Dissertationen zum Thema "Coulomb efficiency"

Šátek, Dominik. "Teplotní závislost kapacity negativní elektrody pro sodno – iontové akumulátory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442527.

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This work focuses on sodium-ion batteries. It describes the basic principles of accumulators, focusing more on secondary cells, their electrodes, especially negative electrodes. The work is lightly based on the basics of lithium-ion batteries. The practical part of the work is the production of negative electrodes Na2Ti3O7, which are further measured at three different temperatures. These measurements are then evaluated.

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Goodman, Johanna Karolina Stark. "The morphology and coulombic efficiency of lithium metal anodes." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53398.

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Since their commercialization in 1990, the electrodes of the lithium-ion battery have remained fundamentally the same. While energy density improvements have come from reducing the cell packaging, higher capacity electrodes are needed to continue this trend. A lithium metal anode, where the negative electrode half reaction is the plating and stripping of metallic lithium, is explored as an alternative to current graphite anodes. The specific capacity of the lithium metal anode is over ten times that of the graphite anode, making it a serious candidate to further improve the energy density of l

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Pickering, Jason C. Pickering. "Understanding Coulombic Efficiency Limitations in an Acid-Base Energy Storage System: Mass Transport Through Nafion." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1528397906336044.

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Chakravorty, Utshab. "STUDY OF CHARACTERIZATION OF SUBMICRON COAL PARTICLES DISPERSED IN AIR AND CAPTURE OF COAL PARTICLES BY WATER DROPS IN A SCRUBBING COLUMN." UKnowledge, 2012. http://uknowledge.uky.edu/cme_etds/16.

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Present day water spray based dust removal technologies do not effectively remove respirable submicron coal and silica dust particles in the underground coal mines causing Coal worker’s pneumoconiosis (CWP). The objective of this research was to study the electrostatic charges present in the airborne coal dust in order to develop efficient water spraying based dust removal technology where water drops charged using ionic compounds and surfactants would be used to capture the oppositely charged coal particles. In an experimental scrubbing column, coal particles dispersed in an air stream by a F

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Stefánsdóttir, Lára Kristín. "Microbial fuel cells for organic dye degradation." Thesis, KTH, Skolan för bioteknologi (BIO), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215020.

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Wales, Benjamin. "Improvements to detection efficiency and measurement accuracy in Coulomb Explosion Imaging experiments." Thesis, 2011. http://hdl.handle.net/10012/6354.

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An algorithm for extracting event information from a Coulomb Explosion Imaging (CEI) position sensitive detector (PSD) is developed and compared with previously employed schemes. The PSD is calibrated using a newly designed grid overlay and validates the quality of the described algorithm. Precision calculations are performed to determine how best the CEI apparatus at The University of Waterloo can be improved. An algorithm for optimizing coincidence measurements of polyatomic molecules in CEI experiments is developed. Predictions of improved efficiency based on this algorithm are performed an

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Liu, Yu-Ting, and 劉宇庭. "Device of Rapid Battery Efficiency Check by Coulomb''s Law and Voltage Measurement." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/drqf47.

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碩士 國立虎尾科技大學 光電與材料科技研究所 103 Currently battery market applications require high energy, high power and small size of the battery. The battery is driving one of the main core of high energy-consuming products. Battery development is very important. At present, the Battery Management System(BMS) battery applications has become quite important core technology. BMS is responsible for the battery pack for security monitoring, effective control and management. BMS can improve the efficiency and reliability of the battery when the vehicle is running. BMS can improve the life of the battery

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Hsu, Chung-Jye, and 許仲傑. "A PWM-based DC-DC Buck Converter with High-efficiency Light Load Mode Operation and SOC Estimation Circuit Using Coulomb Counting Method with Dynamic Voltage Calibration." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/rhu4gh.

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碩士 國立中山大學 電機工程學系研究所 106 The research topics of this thesis are related to two sub-circuits in a Battery Management System of the AUV research project, which are a PWM-based DC-DC buck converter with high-efficiency light load mode operation and SOC estimated circuit using Coulomb counting method with dynamic voltage calibration. They are realized using TSMC 0.50 um CMOS High Voltage and TSMC 0.18 um CMOS processes, respectively. The first topic is meant to resolve the poor efficiency in the light load operation of PWM-based DC/DC converters. By turning off an optimal number of powe

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Bond, Toby Mishkin. "Improving Precision and Accuracy in Coulombic Efficiency Measurements of Lithium Ion Batteries." 2012. http://hdl.handle.net/10222/15867.

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Lithium-ion batteries have been used extensively over the past two decades in the portable consumer electronics industry. More recently, Li-ion batteries have become candidates for much larger-scale applications such as electric vehicles and energy grid storage, which impose much more stringent requirements on batteries, especially in terms of cell lifetime. In order to develop batteries with improved lifetimes, a means of quickly and accurately evaluating battery life is required. The use of coulombic efficiency (CE) is an important tool in this regard, which provides a way to quantify parasi

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Smith, Aaron. "A HIGH PRECISION STUDY OF LI-ION BATTERIES." 2012. http://hdl.handle.net/10222/14608.

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Undesired reactions in Li-ion batteries, which lead to capacity loss, can consume or produce charge at either the positive or negative electrode. For example, the formation and repair of the solid electrolyte interphase consumes Li+ and e- at the negative electrode. Electrolyte oxidation at the positive electrode allows extra electrons (with corresponding electrolyte decomposition products) to be extracted at the electrode compared to the number which could be extracted in the absence of electrolyte oxidation. High purity electrolytes, various electrolyte additives, electrode coatings and s

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Buchteile zum Thema "Coulomb efficiency"

Djellali, Meriem, Mostefa Kameche, Hakima Kebaili, Abdallah Benhamou, Mustapha Bouhent, and Christophe Innocent. "Utilization of Double-Layered Hydroxides for Enhancement of Dissolved Oxygen Reduction in Microbial Fuel Cell: An Approach for the Evaluation of Coulomb Efficiency." In ICREEC 2019. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5444-5_30.

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Zhang, Ji-Guang, Wu Xu, and Wesley A. Henderson. "High Coulombic Efficiency of Lithium Plating/Stripping and Lithium Dendrite Prevention." In Lithium Metal Anodes and Rechargeable Lithium Metal Batteries. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44054-5_3.

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Vijaya and Pankaj Kalita. "An Investigation on the Effect of Charging Current on Capacity, Coulombic Efficiency, and Energy Density of Commercial Lithium-Ion Polymer Cells." In Sustainable Energy Generation and Storage. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2088-4_9.

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Sangouard, Patrick. "Perspective Chapter: Device, Electronic, Technology for a M.E.M.S. Which Allow the Extraction of Vacuum Energy Conform to Emmy Noether Theorem." In Alternative Energies and Efficiency Evaluation [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105197.

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This theoretical work corresponds to the hope of extracting, without contradicting EMMY NOETHER’s theorem, an energy present throughout the universe: that of the spatial quantum vacuum! This article shows that it should be theoretically possible to maintain a continuous periodic vibration of a piezoelectric structure, which generates current peaks during a fraction of the vibration period. Electronics without any power supply then transform these alternating current signals into a usable direct voltage. To manufacture these different structures, we also present an original microtechnology for

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Kumar, Yugal, and Gadadhar Sahoo. "Application of Charge System Search Algorithm for Data Clustering." In Handbook of Research on Emerging Perspectives in Intelligent Pattern Recognition, Analysis, and Image Processing. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-8654-0.ch018.

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This chapter presents a charged system search (CSS) optimization method for finding the optimal cluster centers for a given dataset. In CSS algorithm, while the Coulomb and Gauss laws from electrostatics are applied to initiate the local search, global search is performed using Newton second law of motion from mechanics. The efficiency and capability of the proposed algorithm is tested on seven datasets and compared with existing algorithms like K-Means, GA, PSO and ACO. From the experimental results, it is found that the proposed algorithm provides more accurate and effective results in compa

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Singh, Narinder, and Sonika. "Electrocatalytic, Photoelectrocatalytic, and Photocatalytic Performance Parameters and Their Measurement Techniques." In Next-generation 2D Nanomaterials for Sustainable Energy and Environment-oriented Applications. Royal Society of Chemistry, 2025. https://doi.org/10.1039/9781837675838-00068.

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In this chapter, key parameters, such as specific surface area, porosity, energy density (E), power density (P), cyclic stability, coulombic efficiency, power conversion efficiency (PCE, η), short circuit current (ISC), open circuit voltage (VOC), fill factor (FF), external quantum efficiency (EQE), internal quantum efficiency (IQE), apparent quantum efficiency (AQE), band gap, solar energy to H2 conversion efficiency (STH), and solar energy to ammonia conversion efficiency (STA) are explained. The characterization techniques used for measuring these parameters are discussed in detail.

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Terzi N. Ugur, Selcuk M. Ergenekon, and Sengul T. "A Numerical Evaluation of a Cover Embankment Model on Very Soft Halic Dredge Material." In Deformation Characteristics of Geomaterials. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-822-9-1136.

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The objective of this study is to evaluate the consolidation process and long-term deformation behavior of an embankment constructed on dredge material from the Halic (know as Golden Horn) in Istanbul. A comprehensive laboratory studies were performed on dredge material and with using the laboratory test results, finite element numerical method was carried out to analyze the embankment construction procedure, and its relationship with the Halic dredge materials. The Soft Soil Creep Model for very soft dredge material and the Mohr-Coulomb Soil Model for embankment material was utilized in the n

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Aly, Abeer E. "Nd2Fe14B and SmCo5 a Permanent Magnet for Magnetic Data Storage and Data Transfer Technology." In Advanced Materials and Nano Systems: Theory and Experiment - Part 2. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815049961122020012.

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We present first-standards estimations on Fe, Nd, and SmCo5 utilizing the self-predictable maximum capacity linearized increased plane wave (FPLAPW) strategy. The attractive snapshots of Fe, Nd, and Smco5 were determined utilizing the WIEN2K code. The minutes for BCC Fe and HCP Nd are 2.27μB and 2.65μB separately in great concurrence with test esteems. For Smco5, we efficiently study the impact of considering the twist circle coupling and Coulomb connections in the Sm f shell on the attractive properties, electronic construction, and twist thickness maps. The determined attractive second and m

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Fanizzi, Nicola, Claudia d’Amato, and Floriana Esposito. "Inductive Classification of Semantically Annotated Resources through Reduced Coulomb Energy Networks." In Semantic Services, Interoperability and Web Applications. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-593-3.ch013.

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The tasks of resource classification and retrieval from knowledge bases in the Semantic Web are the basis for a lot of important applications. In order to overcome the limitations of purely deductive approaches to deal with these tasks, inductive (instance-based) methods have been introduced as efficient and noise-tolerant alternatives. In this paper we propose an original method based on a non-parametric learning scheme: the Reduced Coulomb Energy (RCE) Network. The method requires a limited training effort but it turns out to be very effective during the classification phase. Casting retriev

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Sri, G. V. Keerthi, Venkataramana Veeramsetty, and D. M. Vinod Kumar. "Next-Generation Battery Monitoring Using AI for Sustainable Electric Mobility." In Driving Innovation at the Intersection of Renewable Energy and the Internet of Vehicles. IGI Global, 2025. https://doi.org/10.4018/979-8-3373-3321-2.ch007.

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The surge in electric vehicle (EV) use has increased the need for efficient battery management systems, focusing on State of Health (SOH) monitoring for safety, longevity, and performance. Traditional SOH estimation methods like Coulomb counting, EIS, and Kalman filtering face limitations in accuracy and real-time applicability. AI-based approaches, including Machine Learning models like linear regression, SVR, and random forests, and Deep Learning techniques such as RNNs, LSTMs, and CNNs, offer improved precision in capturing battery degradation. Real-world datasets such as CALCE, NASA, Oxfor

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Konferenzberichte zum Thema "Coulomb efficiency"

Schmitt, Guenter, Ralf Buschmann, Karl-Heinz Foehn, and H. Theunissen. "Bimetallic ECN Sensor for Monitoring Inhibitor Efficiency in Waterbased Hydraulic Fluids." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05382.

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Abstract The "Coulombs Counting“ method, a new versatile electrochemical noise (ECN) data evaluation method, has been successfully applied to evaluate the efficiency of corrosion inhibitor packages in concentrates for water based hydraulic fluids (HFA fluids) for underground mining or tunnel work. It was demonstrated that not only pairs of "identical“ electrodes can be used for ECN systems diagnostics but also bimetallic couples, e.g. steel / bronze. Such electrode systems are currently used for optimization of additive packages and online-monitoring of inhibitor efficiency and quality assuran

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Schmitt, Guenter, Ralf Buschmann, Christiane Olry, Boris Motko, and Peter Schrems. "Measuring Corrosivity as Simple as Temperature?" In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07379.

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Abstract The basic principle of a new approach of electrochemical noise (ECN) diagnostics, the Coulombs counting method, is outlined, and the wide range of application as an online-monitoring tool in technical corrosion systems is exemplified. It is shown that corrosion monitoring can be achieved with ECN sensors as simple as monitoring temperatures. A special feature of this method is that corrosion in crevices or under deposits can be investigated under real-time conditions. This allows monitoring the efficiency of mitigation measures, e.g. application of corrosion inhibitors, under crevice

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Ivanov, V. "Influence of Coulomb fields on formation of emittance in photoguns." In 8th International Congress on Energy Fluxes and Radiation Effects. Crossref, 2022. http://dx.doi.org/10.56761/efre2022.s3-o-038301.

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A theoretical analysis of the formation of longitudinal and transverse emittance of bunches of charged particles in photoguns under the action of repulsive Coulomb fields is carried out. Numerical calculations have been performed to compare the characteristics of cylindrical and arbitrary-shape bunches with a uniform and Gaussian distribution of the charge density over the bunch volume. The problem of transverse dynamics of non-axisymmetric bunches is solved analytically. Comparison of the efficiency of the proposed numerical-analytical model with calculations using the Astra code is carried o

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Brown, Normal J., and Lee M. Cook. "A Brief Survey of Pressure Calculations for Abrasive Wear Systems." In Optical Fabrication and Testing. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/oft.1996.othb.3.

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Abrasive wear systems employ a coulomb friction process so that the power input per unit area of abraded surface is related to the product of local pressure and relative velocity by the Coulomb friction factor. The product of this power input with a process dependent efficiency factor yields the volumetric removal rate per unit area. Calculation of pressure is therefore necessary to determine abrasive removal rates. Local pressure variations are also necessary to determine local geometries such as edge rounding and roll-off. A pressure distribution poorly suited to a specific application may l

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Kramer, Ronny, and Gudula Runger. "Performance and efficiency investigations of SIMD programs of Coulomb solvers on multi-and many-core systems with vector units." In 2020 28th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP). IEEE, 2020. http://dx.doi.org/10.1109/pdp50117.2020.00044.

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Rincon, Liz K., and Joa˜o M. Rosario. "Influence of Nonlinear Friction and Disturbance in the Control of a Mechatronic System: CNC Machine Tool Application." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48553.

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The CNC (Computer Numerical Control) machine tools are complex mechatronic systems applied to the manufacture with high precision and high speeds. To achieve high accuracy and operational efficiency, the disturbance and friction, which occur during machining process, should be reduced as low as possible. This paper develops an analysis of influence by cutting force and friction effect in the control of machine tool based on the CNC dynamic model and parameters identification. For this purpose, the study focuses on Coulomb and Viscous nonlinear friction and the external disturbances. The analys

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Ferri, Aldo A., and Bonnie S. Heck. "Analysis of Stick-Slip Motion in Coulomb Damped Systems Using Variable Structure System Theory." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-3915.

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Abstract The numerical simulation and control design of many systems is hampered by the presence of dry (Coulombic) friction. In particular, the discontinuous nature of the friction law leads to computational difficulties whenever sticking occurs across the frictional interfaces. This paper uses results from Variable Structure System (VSS) theory to develop a model useful for simulating stick-slip motion in a generic system with multiple frictional interfaces. The Variable Structure framework is also used to analyze the errors incurred in the new simulation model. A second approach, motivated

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Wang, Xinchao, Sherif Noah, and Hamid Vahabzadeh. "Analysis of a Coulomb Friction Damper for Suppressing Oscillations of Drive Shafts of Vehicles." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0436.

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Abstract To improve fuel efficiency of automatic transmissions, their torque converters are typically locked up at about 40 mph after which 100% of the torque is transmitted from the engine to the transmission. One cause of fuel inefficiency is the viscous losses in the torque converter at lower vehicle speeds due to slippage between the pump and turbine of the transmission’s torque converter. Consequently, the automotive industry has been experimenting with imposing an early lock-up of the torque converter to enhance fuel efficiency. However, damping in the driveline would drastically be redu

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Guoliang Wu, Rengui Lu, Chunbo Zhu, and C. C. Chan. "An improved Ampere-hour method for battery state of charge estimation based on temperature, coulomb efficiency model and capacity loss model." In 2010 IEEE Vehicle Power and Propulsion Conference (VPPC). IEEE, 2010. http://dx.doi.org/10.1109/vppc.2010.5729017.

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Wang, Gou-Jen, Ying-Hsu Lin, His-Harng Yang, and Cheng-Tang Pan. "Design and Fabrication of a High Efficiency Piezoelectric Vibration-Induced Micro Power Generator." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42682.

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To fulfill the increasing self-power demanding of the embedded and remote microsystems, theoretical and experimental study of a piezoelectric vibration-induced micro power generator that can convert mechanical vibration energy into electrical energy is presented. A complete energy conversion model regarding the piezoelectric transducer is discussed first. To verify the theoretical analysis, two clusters of transducer structures are fabricated. The piezoelectric lead zirconate titanate (PZT) material that has better energy conversion efficiency among the piezoelectric materials is chosen to mak

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Berichte der Organisationen zum Thema "Coulomb efficiency"

Yang, Yu, Hen-Geul Yeh, and Cesar Ortiz. Battery Management System Development for Electric Vehicles and Fast Charging Infrastructure Improvement. Mineta Transportation Institute, 2024. http://dx.doi.org/10.31979/mti.2024.2325.

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The electric vehicle (EV) has become increasingly popular due to its being zero-emission. However, a significant challenge faced by EV drivers is the range anxiety associated with battery usage. Addressing this concern, this project develops a more efficient battery management system (BMS) for electric vehicles based on a real-time, state-of-charge (SOC) estimation. The proposed study delivers three modules: (1) a new equivalent circuit model (ECM) for lithium-ion batteries, (2) a new SOC estimator based on the moving horizon method, and (3) an on-board FPGA implementation of the classical Cou

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