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Electrodes based on nano-tree-like vanadium nitride and carbon nanotubes for micro-supercapacitors

Journal of Materials Science & Technology 2018年第6期34卷 976-982页

作者： Nadir Ouldhamadouche amine achour Raul Lucio-Porto Mohammad Islam Shahram Solayman Ali Arman Azin Ahmadpourian Hamed achour Laurent Le Bri-zoual Mohamed Abdou Djouadi Thierry Brousse Laboratoire de Génie Physique Université lbn Khaldoun BP P 78 Zaaroura 14000 Tiaret Algeria National Institute of Scientific Research 1650 Bd. Lionel-Boulet Varennes QCJ3X1P7 Canada Universidad Autónoma de Nuevo León Facultad de lngeniería Mecdnica y Eléctrica San Nicolas de los Garza 66450 Nuevo León Mexico Universidad Autónoma de Nuevo León Centro de lnnovación Investigación y Desarrollo en lngeniería y Tecnología Apodaca 66600 Nuevo León Mexico Deanship of Scientific Research Advanced Manufacturing Institute King Saud University P.O. Box 800 Riyadh 11421 Saucli Arabia Department of Physics Science and Research Branch Islamic Azad University Tehran Iran Vacuum Technology Group ACECR Sharif Branch Tehrun Iran Young Researchers and Elite Club Arak Branch Islamic Azad University Arak Iran Institute of Condensed Matter Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) CH-1015 Lausanne Switzerland University of Rennes 1 Institut d'Electronique et de Télécommunications IETR - UMR CNRS 6164 Campus de Beaulieu -Bat 11D 263 Av General Leclerc 35042 Rennes cedex France Institut des MateriauxJean Rouxel (IMN) Universite de Nantes CNRS 2 rue de la Houssiniere BP32229 44322 Nantes Cedex 3 France Reseau sur le Stockage Electrochimique de l'Energie (RS2E) FR CNRS 3459 France

Vanadium nitride （VN） was deposited by DC-sputtering on a vertically aligned carbon nanotube （CNTs） template for the purpose of nano-structuration. This led to the fabrication of hierarchically composite electrodes consisting of porous and nanostructured VN grown on vertically aligned CNTs in a nano-treelike configuration for micro-supercapacitor application. The electrodes show excellent performance with an areal capacitance as high as 37.5 mF cm^-2 at a scan rate of 2 mV s^-1 in a 0.5 M K2504 mild electrolyte solution. Furthermore, the capacitance decay was only 15% after 20,000 consecutive cycles. Moreover, the capacitance was found to increase with VN deposit thickness. The X-ray photoelectron spectroscopy analyses of the electrodes before and after cycling suggest that the oxide layers that form at the VN surface is the responsible for the redox energy storage in this material. Such electrodes can compete with other transition metal nitride based electrodes for micro-supercapacitors.

关键词： Vanadium nitride CNTs Micro-supercapacitors Surface chemistry

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E-fuel system: a conceptual breakthrough for energy storage

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Science Bulletin 2019年第4期64卷 227-228页

作者： Khalil amine Chemical Sciences and Engineering Division Argonne National Laboratory

The demand for renewables such as solar and wind power has become stronger than ever in the past few decades and their numerous advantages have nearly risen to the status of common knowledge. However, as solar and wind power are intermittent in nature, the electricity generated from these renewable sources only comprise a low fraction of global electricity production. Enabling the widespread use of renewables requires energy storage technology that is site-independent, efficient, scalable, stable, cost-effective, safe, energy dense and continuous in operation. To date, none of the existing technologies have adequately met the attributes necessary for storing intermittent and scattered solar, wind and other sources of renewable energy. Pumped hydro and compressed air are scalable and cost-effective, but are limited by geography and geology [1].

关键词： demand technologies attributes

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An energy-degree evaluation metric for clustering purposes in mobile ad hoc networks

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第2期10卷 114-132页

作者： Khalil amine MOAD6 Research Team MASI LaboratoryE3S Research Centre Mohammadia School of Engineering Mohammed V University of RabatMorocco

Network clustering is the process of partitioning a network into a number of virtual entities mastered by certain nodes,called cluster centers that are responsible for collecting and maintaining topology information and managing the routing *** ad hoc networking,clustering has been introduced to deal with the dynamic topology by providing a temporarily stable network *** process mainly depends on the metric upon which the selection of cluster centers is performed.A wide range of clustering metrics were introduced in the literature based on network issues including mobility and connectivity degree,giving rise to a variety of clustering *** clustering provides energy consumption reduction,residual energy has not received enough attention and few studies have addressed the clustering on the basis of this *** paper discusses the current clustering metrics and proposes an energy-degree evaluation metric with mobility consideration taking into account the nodes residual energy and the network connectivity as two main keys of clustering.

关键词： Ad hoc networks clustering dominating set energy aware mobility

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Stability analysis of an SIR epidemic model with homestead-isolation on the susceptible and infectious,immunity,relapse and general incidence rate

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International Journal of Biomathematics 2023年第5期16卷 1-22页

作者： amine Bernoussi Equations au dérivees partielles Algebre et Géométrie spectrales Department of MathematicsFaculty of ScienceIbn Tofail University BP 13314000 KenitraMorocco

In this paper,we propose the global dynamics of an SIR epidemic model with distributed latent period,immunity,relapse,homestead-isolation of the susceptible and infectious individuals and general incidence *** resulting model has a disease-free equilibrium and if Ro>1,then the SIR epidemic model admits a unique endemic *** using suitable Lyapunov functionals and LaSalle's invariance principle,the global stability of the disease-free equilibrium and the endemic equilibrium is established,under suitable monotonicity conditions on the incidence function.

关键词： An SIR epidemic model homestead-isolation on the susceptible and infectious Lyapunov function LaSalle's invariance principle global stability.

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Boosted on-chip energy storage with transistors

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National Science Review 2022年第10期9卷 56-57页

作者： Tongchao Liu Khalil amine Chemical Sciences and Engineering Division Argonne National Laboratory Materials Science and Engineering Stanford University

On-chip energy-storage devices play an important role in powering wireless environmental sensors and microelectrome chanical systems [1,2].Starting from the 1980s,on-chip energy-storage devices,including microbatteries and super capacitors,have been applied to power the real-time clock on a chip [3].These tiny batteries/supercapacitors enable the real-time clock to keep working when the electronics are *** this way,electronic devices can be restarted with a valid *** the development of electronic devices,signal processing and communication have become much faster,while also requiring more powerful energy-storage devices to drive them [4-6].

关键词： high-temperature superconductivity oxygen doping electric field effect all-solid-state field effect transistor superconductor–insulator transition

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Mechanical Characterisation of Interface for Steel/Polymer Composite Using Pull-out Test: Shear-Lag and Frictional Analysis

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Journal of Materials Science & Technology 2006年第4期22卷 552-558页

作者： Mohamed KHARRAT Maher DAMMAK amine CHARFI Institut Préparatoire aux Etudes d'Ingénieurs de Sfax Tunisia Laboratoire des Systèmes ElectromécaniquesEcole Nationale d'Ingénieurs de SfaxTunisia Laboratoire des Systèmes Electromécaniques Ecole Nationale d'Ingénieurs de SfaxTunisia

Fibre-matrix interface is known to have contribution to the mechanical performance of fibre-reinforced composite by its potential for load transfer between the fibre and the matrix. Such load transfer is of great importance in dentistry when a post is used for fixing a ceramic crown on the tooth. In this study, a pull-out test was carried out to analyse the interfacial properties of a steel fibre embedded in a polyester and epoxy matrices. It was found that the fibre-matrix interface is debonded on the whole embedded length when the fibre stress reached the debonding stress. Then, the fibre stress fell down to the initial extraction stress required to pulling out the debonded fibre from the matrix. Both debonding stress and initial extraction stress initiated a linear increase with the implantation length after the debonding stress reached horizontal asymptotes. To analyse the fibre-matrix load transfer before debonding, an analytical shear-lag model was adopted to in this test conditions. Fitting the experimental results with the analytical model provided the interfacial shear strength. By considering the Coulomb friction at the fibre-matrix interface during the fibre extraction process, an analytical model which considers Poisson＇s effects on both fibre and matrix, was developed. In this model, knowledge of the initial extraction stress of the fibre provides the residual normal stress at the fibre-matrix interface.

关键词： Fibre Matrix Interface Pull-out Shear-lag Debonding Friction

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RING OPENING POLYMERIZATION OF TETRAHYDROFURAN CATALYSED BY MAGHNITE-H^+

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Chinese Journal of Polymer Science 2012年第1期30卷 56-62页

作者： Khadidja Benkenfoud amine Harrane Mohammed Belbachir Laboratoire de Chimie des Polymeres Departement de Chimie Faculte des SciencesUniversite d'Oran Es-SeniaBP No 1524 El M'Naouar31000 OranAlgeria

The cationic ring-opening polymerization of tetrahydrofiiran using maghnite-H~＋ is ***-H~＋,is a non-toxic solid catalyst issued from proton exchanged montmorillonite ***,also called ＂poly（butandiol） ether＂,with acetate and hydroxyl end groups was successfully *** of reaction temperature, weight ratio of initiator/monomer and reaction time on the conversion of monomer and on the molecular weight are investigated.A cationic mechanism of the reaction was *** chemistry can be considered as a suitable route for preparing poly（THF） as a soft segment for thermoplastic elastomers.

关键词： Montmorillonite Maghnite Ring opening polymerization THF

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Strategies to enable microsized alloy anodes for high-energy and long-life alkali-ion batteries

Industrial Chemistry & Materials

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Industrial Chemistry & Materials 2024年第4期2卷 489-513页

作者： amine Daali Rachid amine Wilkistar Otieno Gui-Liang Xu Khalil amine Chemical Sciences and Engineering Division Argonne National LaboratoryLemontIL 60439USA Department of Industrial and Manufacturing Engineering College of Engineering and Applied ScienceUniversity of Wisconsin-MilwaukeeMilwaukeeWI 53211USA Materials Science Division Argonne National LaboratoryLemontIL 60439USA

Micro-sized anode materials demonstrate greater potential for practical applications than nanomaterials in the aspects of volumetric energy density,coulombic efficiency,fabrication process,and ***,the huge volume changes of alloy anodes(up to∼500%)during repeated charge/discharge has led to a series of challenging issues including pulverization of active material particles and delamination from current collectors,formation of thick and fragile solid-electrolyte interphase(SEI)and depletion of electrolytes,eventually leading to rapid cell ***,we review recent progress of rational strategies to enable the use of microsized alloy anodes(Si,P,Sb,Sn,etc.)including electrolyte modulation,binder design and architecture *** also provide perspectives on future directions and remaining challenges of microsized anodes towards practical applications.

关键词： Volume change Alloy Anodes Microsized Alkali-ion Batteries

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Numerical investigation of the stresses in backfilled stopes overlying a sill mat

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第3期9卷 108-119页

作者： Mohamed amine Sobhi Li Li Research Institute on Mines and the Environment Department of Civil Geological and Mining Engineering école Polytechnique de Montréal MontréalCanada

Backfill is commonly used in underground mines to help increase the ore recovery rate and reduce the ore dilution. The use of a part of mine waste as underground backfill material also helps reduce the environmental impact of mining operations. After all, backfill is used to provide a working platform or safer working space. Its primary and most important role is to improve the rock mass stability around mine openings. However, most available solutions to stress analyses were developed for an isolated stope, without taking into account the influence of mine depth, or of adjacent stopes. In this paper,results from a numerical study carried out to evaluate the stresses in backfilled stopes overlying a sill mat are presented. Mine depth and excavation of the underlying stope below the sill mat(horizontal pillar)are both taken into consideration. The influence of stope geometry, backfill, sill mat and rock properties on the stresses is also evaluated. Compared with the case of a single isolated backfilled stope, the numerical results show that the stress magnitudes in the overlying backfill are considerably increased due to the excavation of the underlying stope. In general, the stresses also increase with mine depth and backfill stiffness, while these tend to decrease with an increase in the surrounding rock mass *** results suggest that existing solutions for backfill design may need to be revised.

关键词： Mine depth Backfill Sill mat Stresses Numerical modeling

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On the Optimal Design of Cable Driven Parallel Robot with a Prescribed Workspace for Upper Limb Rehabilitation Tasks

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Journal of Bionic Engineering 2019年第3期16卷 503-513页

作者： Laribi Med amine Carbone Giuseppe Zeghloul Said Department of GMSC Pprime Institute CNRS-University of Poitiers - ENSMA - UPR 3346 Poitiers France Department of Mechanical Energy and Management Engineering University of Calabria 87036 Rende Italy CESTER Technical University of Cluj-Napoca Muncii Ave. 103-105 400641 Cluj-Napoca Romania

This paper deals with an optimization approach to design a cable driven parallel robot intended for upper limb rehabilitation tasks. The cable driven parallel robots have characteristics that make them best candidate for rehabilitation exercise purposes such as large workspace, re-configurable architecture, portability and cost effectiveness. Here, both the cable tensions that are needed to move a wristband as well as the workspace need to be carefully optimized for fulfilling the prescribed operation tasks. A specific case of study is addressed in this work by referring to LA RM wire driven exercising device (LAWEX), which is applied to upper limbs exercises. To that end, a motion capture system is used to collect quantitative data on the prescribed workspace of a human upper limb. A specific optimization problem is settled up for considering combining two optimization goals, namely, the smallest robot size reaching a prescribed workspace and the minimum cable tension distributions. A sequence of optimization steps is defined using Genetic Algorithms (GAs) applied to LAWEX robot. The proposed objective function is based on a mathematical formulation of the power of a point with respect to bounding surfaces in combination with a performance index to show the distributions of the minimum cable tensions.

关键词： LAWEX robot design bionic robot cable-driven robots optimization power of the point rehabilitation tasks

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