RESEARCH PAPERS

engineering-research-papers-super-capacitor




A cost-effective supercapacitor material of ultrahigh specific capacitances: spinel nickel cobaltite aerogels from an epoxide-driven sol-gel process
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The ever worsening energy depletion and global warming issues call for not only urgent development of clean alternative energies and emission control of global warming gases, but also more advanced energy storage and management devices. Supercapacitors,

Electrodeposition of nickel hydroxide films on nickel foil and its electrochemical performances for supercapacitor
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Nickel hydroxide was prepared by electrodeposition in Ni (NO3) 2 aqueous solution for the electrode materials of supercapacitors. The structure and morphology of products were characterized using X-ray diffraction (XRD) and field emission scanning electron

Asymmetric flexible supercapacitor stack
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Abstract Electrical double layer supercapacitor is very significant in the field of electrical energy storage which can be the solution for the current revolution in the electronic devices like mobile phones, camera flashes which needs flexible and miniaturized energy storage

Lifetime prediction for supercapacitor-powered wireless sensor nodes
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Page 1. Lifetime Prediction for Supercapacitor-powered Wireless Sensor Nodes Christian Renner, Jürgen Jessen, and Volker Turau 17 17 Page 23. Lifetime Prediction for Supercapacitor-powered Wireless Sensor Nodes Christian Renner, Jürgen Jessen, and Volker Turau

A development of an energy storage system for hybrid electric vehicles usingsupercapacitor
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Abstract An energy storage system for improving performance of hybrid electric vehicles (HEV) is presented. The hybrid power system consists of batteries and supercapacitors. The supercapacitor contributes to the rapid energy recovery associated with regenerative

Advancing the supercapacitor materials and technology frontier for improving power quality
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In the ongoing effort for energy sustainability, electrochemical supercapacitors are emerging as devices of prime importance owing to their superior characteristics unmatched by any other charge storage device. These include: high power densities at relatively high energy

A survey of electrochemical supercapacitor technology
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Synopsis This project was originally the brainchild of the supervisor, Dr. Jian Guo Zhu, who has a particular passion for supercapacitors as an elegant and efficient means of energy storage. The structure of the work undertaken in this thesis is largely a result of

Single step solution combustion synthesis of ZnO/carbon composite and its electrochemical characterization for supercapacitor application
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Zinc oxide/carbon (ZnO/C) composite is synthesized by self-propagating solution combustion method using dextrose as fuel and carbon source. By this method, carbon is added in-situ to the metal oxide. The powders are characterized by XRD, SEM, CHNS

Solvent tuned PANI-CNT composites as advanced electrode materials for supercapacitorapplication
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ABSTRACT Composites of polyaniline and multiwalled carbon nanotube were prepared by in-situ chemical oxidative polymerization of the aniline monomer in 1M HCl and 1M HCl with 20% ethanol as solvent. The PANI-CNT composites were characterized by FTIR and XRD Figure 3 Comparison of some electrical characteristics as a function of carbon content (wt%) in composite electrodes:(a) electronic dc resistivity of one composite electrode for the two kinds of carbon;(b) total (ionic+ electronic ac (1 kHz) of a whole cell; electrodes and

Physical and electrochemical properties of supercapacitor electrodes derived from carbon nanotube and biomass carbon
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Green monoliths (GMs) were prepared from mixtures of KOH (5% by weight), carbon nanotubes (5%) and self-adhesive carbon grains (90%) from oil palm empty fruit bunch fibers. The GMs were carbonized up to 600, 700 and 800 C under an N2 gas environment,

Synthesis and electrochemical characterization of polypyrrole/multi-walled carbon nanotube composite electrodes for supercapacitor applications
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The nanocomposites of polypyrrole (PPy) and multi-walled carbon nanotube (MWCNT) with different composition are synthesized by the chemical oxidative polymerization method. In these composites, the MWCNTs are uniformly coated by PPy with different thickness. The

Comparison of simulation programs for supercapacitor modelling
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Abstract To meet increasing demands for fuel efficiency, alternative drivetrains are being developed. Electric hybrid vehicles are one such alternative and an important part of them is their energy storage. To provide this storage the supercapacitor is an interesting

Applications of supercapacitor energy storage for a wave energy converter system
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Abstract As wave energy converters (WECs) continue their development, improved performance using various energy storage options are constantly being examined. This paper describes the applications of an energy storage system based on supercapacitors

Study of supercapacitor in the application of power electronics
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Abstract:-The purpose of this paper is to carry out a comprehensive study of supercapacitor in the application of power electronics. According to the practical demand and feasibility of power electronics, the modelling, voltage management and topology of supercapacitor-

Significant capacitance performance of vertically aligned single-walled carbon nanotubesupercapacitor by varying potassium hydroxide concentration
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In this manuscript, the effect of potassium hydroxide (KOH) electrolyte concentrations (0.1 M, 1.0 M, and 6.0 M) to the specific gravimetric capacitance of vertically aligned single-walled carbon nanotube (VA-SWCNT) based supercapacitor will be reported. VA-SWCNT

Battery-Supercapacitor energy storage
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Abstract In the strive to further improve the lifetime and performance of a hybrid vehicle drivetrain, one of the most challenging task is to improve the performance of the electrical energy storage regarding the electrical power and energy capacity. The process of storing

Hierarchical Al-doped and hydrogenated ZnO nanowire@ MnO 2 ultra-thin nanosheet core/shell arrays for high-performance supercapacitor electrode
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ZnO@ MnO2 and Al-doped ZnO (AZO)@ MnO2 hybrid electrodes in core/shell geometries have been synthesized on stainless steel substrates by a scalable low-cost solution route. Cyclic voltammogram (CV) and galvanostatic (GV) charge-discharge measurements

synthesis of Fe2O3/C, Fe2O3-SnO2/C, Fe2O3-ZnO/C composites and their electrochemical characterization in non-aqueous electrolyte for supercapacitor
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Single and mixed metal oxide/carbon composites like Fe2O3/carbon, Fe2O3-SnO2/carbon, Fe2O3-ZnO/carbon are synthesized by a simple self-propagating solution combustion method. Carbon is introduced in-situ during the preparation of metal oxides in the form of

Capacity optimization of the supercapacitor energy storages on DC railway system using a railway powerflow algorithm
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Abstract. The electric railway system is one of the most peculiar power systems of which the location and power of electrical load are continuously variable. The variance of the location and power of the vehicle changes the participation factor of each substation for the vehicle

Integration and testing of a DC/DC controlled supercapacitor into an electric vehicle
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Abstract The primary goal of this project was to demonstrate improved performance and equipment reliability in a Solectria Force electric vehicle associated with the installation of a Maxwell PowerCache ultracapacitor module and a Solectria prototype integrated

Fuel cell, battery and supercapacitor hybrid system for electric vehicle: Modeling and control via energetic macroscopic representation
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Abstract-Nowadays, no electrochemical energy system presents a competitive operation if compared with internal combustion engine, which is the reason for combining electrochemical energy systems to obtain a hybrid energy storage system. This paper

Electrochemical supercapacitor with electrolyte based on an ionic liquid
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Studies of the electrochemical behavior of IL on carbon SWNT showed that the measured capacitance depends considerably on the electrode potential, namely, by more than 50%. This effect can be associated with the specific reversible interaction of IL with the

Efficient supercapacitor energy usage in mobile phones
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Abstract:This paper proposes a solution for using supercapacitors to power mobile phones. Based on a DC/DC voltage converter and a supercapacitor stacking scheme, this solution is designed to maximize the usable energy of the supercapacitors as well as the

Supercapacitor applications of polyaniline and poly (N-methylaniline) coated pencil graphite electrode
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Polyaniline (PANi) and poly (N-methylaniline)(PNMA) films have been successfully synthesized on pencil graphite electrode (PGE) using cyclic voltammetry (CV) from acetonitrile (ACN) solution of 0.1 M tetraethylammonium tetrafluoroborate (TEABF4) and

Simulation of On Board Supercapacitor Energy Storage System for Tatra T3A Type Tramcars
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The most efficient and low emission kind of public transport is a rail transport. Tram based light rail transit has been chosen by city government as the main urban transportation solution in Riga. However, the running trams in Riga have been produced in 1976 1987 (

Supercapacitor Based On Activated Carbon And Polymer Electrolyte
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ABSTRACT The supercapacitors are characterized by fast discharge rate and easy for maintenance. Their demand is predicted to be most extensive in frequency regulation applications. The other area for significant growth is in regenerative braking for grid–

Control of fuel cell/supercapacitor hybrid sources for electric vehicle applications
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Abstract This paper presents a novel control strategy for the dc bus voltage regulation employing a PEM fuel cell as main source and supercapacitors as supplementary source for electric vehicle applications. The proposed control is clearly simpler than usual state Abstract We report on the preparation of an all solid-state thin film micro-supercapacitor using RuO 2 electrode film and LiPON electrolyte film on a Pt/Ti/target dc and rf reactive sputtering. Room temperature charge-discharge measurements based

Supercapacitor Enhanced Battery Traction Systems–Concept Evaluation
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This review paper gives an overview of state-of-the-art technology regarding supercapacitors, briefly discusses the aspect of supercapacitor balancing and compares and assesses two system designs incorporating supercapacitors, batteries and in one

Bio-Based Materials for Supercapacitor
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Due to a strong growth of the energy storage market in applications such as portable electronics and hybrid electric/electric vehicles (HEV/EV), an increasing demand for light- weight and compact electric power sources is developing. Electrochemical double layer

Studies of supercapacitor carbon electrodes with high pseudocapacitance
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During the last decades different new capacitor types were developed based on electrochemical processes. According to Conway [1] an electrochemical capacitor is a device in which different quasi-reversible electrochemical charging/discharging processes The principal expectations for supercapacitor performance for energy storage and delivery are 1. excellent recyclability with cycle lives of hundreds of thousands of cycles; 2. substantially greater power densities of operation than those achievable with regular

TurboCap: A Batteryless, Supercapacitor-based Power Supply for Mini-FDPM
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Abstract:This paper describes TurboCap, a batteryless, supercapacitor-based power supply subsystem for a handheld, laser-based breast cancer detector named the Mini- FDPM. Supercapacitors have high power density and are a better match with the power

Investigation of Supercapacitor Bidirectional Power Flow System
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Abstract-It is possible to realize supercapacitor charging and discharging devices through BUCK-BOOST converter. In this paper alternative system of charging and discharging using supply side VS inverter for charging and supercapacitor side inverter for discharging of

3D Simulation of thermal field in the core of supercapacitor
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Abstract From macrostructure of EDLC (Electrochemical double layer capacitor) it is possible to figure out, that for the heat conduction the volumetric properties of EDLC acts as anisotropic surroundings. This structure is in axial and radial direction of EDLC coil

Bi-Directional DC-DC Converters for Battery Buffers with Supercapacitor
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Sources of electrical energy for industry, agriculture or military use are different with respect to the purpose, place, sort of appliance, type of supplied systems. Fixed military facilities, for example, bases and camps are supplied by common electrical network system.

Electrochemical Supercapacitor Time Domain Analysis by Means of Multi-Channel Measurement System
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Abstract-In this paper we present the multi-channel measurement system based on potentiostatic, galvanostatic and potentiodynamic methods or combinations of the given measurement methods. The multi-channel measurement system is controlled with the

Hybrid power source with batteries and supercapacitor for vehicle applications
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Abstract: This paper presents a hybrid power source with batteries and supercapacitors realization. Supercapacitors are used in series with a power battery to provide power requirement in transient state. An energy battery is placed in parallel, this battery gives the

Modeling a supercapacitor using PLECS
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Due to their high capacitance and low impedance, supercapacitors are well-suited for energy buffer applications that demand a large storage capacitance or a high pulse current capability. In fuel-cell, wind turbine or backup generator applications, the large storage

Consideration of the ageing in the control of the balancing circuit of supercapacitor
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Abstract Due to their relative low nominal voltage, a great number of supercapacitors are connected in order to obtain a suitable voltage. In the other side, the position of supercapacitor, inside the stack, has a great influence on the temperature of the

The Application of Supercapacitor Energy Storage Devices in DC Drives
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Abstract. The article looks on actual theme about improoving of energetic efficiency of exploitated DC traction drives. There are developed the separate schemes for DC motor starting and braking regimes by using the supercapacitor energy saving devices for motor

Voltage balancing of a 250 Volt supercapacitor module for a hybrid fuel cell vehicle
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Electrochemical energy storage devices play an important role for drive trains in hybrid vehicles with an internal combustion engine or a fuel cell as main power source. The electrochemical storage device allows recuperation of braking energy and provides power

Modeling of Supercapacitor
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Abstract: Recovering and storing energy of a moving vehicle as it slows down and using it to accelerate the vehicle later can significantly increase fuel efficiencies of automobiles. Low cost batteries available today perform quite poorly in applications that require high (dis)

DC bus voltage regulation supplied by fuel cell/supercapacitor hybrid source
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ABSTRACT This paper presents a novel control strategy for the dc bus voltage regulation supplied by a fuel cell as main source and supercapacitors as supplementary source for electric vehicle applications. To control the dc bus voltage, only supercapacitor module

Hybrid battery-supercapacitor storage system for electric city cars
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Abstract The paper is concerned with the use of hybrid battery-supercapacitor storage systems to extend the range of electric vehicles. For the study case of an electric city car, the paper calculates the relationship between the range of the city car over the ECE 15 cycle

Performance of phosphoric acid doped polyaniline as electrode material for aqueous redoxsupercapacitor
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Phosphoric acid doped polyaniline has been synthesized chemically and electrochemically and tested for its specific capacitance properties by constructing a supercapacitor using stainless steel electrodes. Both the samples are characterized by UV-vis, FTIR, XRD and Abstract The capacity of supercapacitor charge storage depends on the size of the electrode surface area and the active material on the electrodes. To enhance the charge storage capacity with a reduced volume, silicon is used as the electrode material, and three-

Preparation and Electrochemical Characterization of Ordered Mesoporous Carbon/PbO Host-guest Composite Electrode Materials for Supercapacitor
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Abstract: Ordered mesoporous carbon/PbO host-guest composites were prepared by incipient wetness impregnation method. The XRD, TEM and N2 adsorption/desorption isotherms tests confirm the host-guest structure of the composites. The PbO loading

Control of wettability of carbon nanotube array by reversible dry oxidation for superhydrophobic coating and supercapacitor applications
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Abstract In this thesis, dry chemical modification methods involving UV/ozone, oxygen plasma, and vacuum annealing treatments are explored to precisely control the wettability of CNT arrays. By varying the exposure time of these treatments the surface concentration of

Supercapacitor-based electrical energy storage system
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Supercapacitors (SCs), also known as electric double-layer capacitors or ultracapacitors, are energy storage devices that store electrical energy without chemical reactions. Energy storage mechanisms that do not require chemical reactions provide several advantages

Characterization of Manganese Oxides/Au Nanocompsite Thin Films for Supercapacitor
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Nanocomposite of manganese oxides/Au thin films were electrodeposited on ITO glass substrate by the potentiostatic method in KMnO4/AuCl3 aqueous solution. The thickness of the thin films was about 50~ 100nm composed of manganese oxide nanoparticles.

Unmanned Aerial Vehicle Energy Efficiency Improvement by Batery-Supercapacitor System
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Abstract: The paper discusses an energy management system of an engine driven unmanned aerial vehicle (UAV). The system improves the UAV flight reliability and energy efficiency, by setting-up capabilities to restart the engine at flight. The EM system

The efficiency improving of traction drive test bench with supercapacitor energy storage system
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Abstract: For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on- board energy storage systems. For studying of system operation, it is necessary to carry

Design and Simulation of Supercapacitor Energy Storage System
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Abstract. STATCOMs are widely used to enhance power system stability. They can exchange reactive power with the power system, but they have limited ability to exchange real power because they don't include energy storage devices. STATCOMs coupled with

Development of supercapacitor based uninterruptible power supply
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Abstract The given paper deals with uninterruptible power supplies utilizing supercapacitors (ultracapacitors). Different types of supercapacitor are described. Various opportunities of supercapacitor implementation are discussed, pros and cons are compared. Experimental

The reduction effect of oxygen functional groups in activated carbon for supercapacitorelectrode
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Oxygen functional groups were removed from activated carbon in order to improve the electrochemical supercapacitor performance. Commercially available and surface-modified activated carbon electrodes were compared in non-aqueous electrolyte, which allowed

Novel synthesis of highly porous spinel cobaltite (NiCo2O4) electrode material forsupercapacitor applications
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Abstract. High performing porous nickel cobaltite (NiCo2O4) nanomaterial is prepared using novel cost effective auto combustion technique. Physical characterization reveals the formation of nickel rich spinel cobaltitie with average crystallite size of 17 nm.

The role of nanomaterial for the design of supercapacitor
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Abstract The development of more efficient electrical storage is a pressing requirement to meet future societal and environmental needs. This demand for more sustainable, efficient energy storage has provoked a renewed scientific and commercial interest in advanced

Buck converter design for Photovoltaic generators with supercapacitor energy storage
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Abstract. In Maximum Power Point (MPP) applications for photovoltaic generators, the DC- DC tracker converter is as important as the MPP tracking algorithm. The purpose of this work is to present the design methodology of a buck converter applied in maximum power point

Hydrated Cobalt Nickel Molybdate Nanorods as Effectively Supercapacitor Electrode Materials
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One-dimensional CoxNi1-xMoO4. nH2O (0= x= 1) nanorods have been successfully synthesized by a mild hydrothermal method. The chemical composition of nanorods was varied. Structures and morphologies of samples were characterized by X-ray diffraction (

NH4CoPO4· H2O Microflowers and Porous Co2P2O7 Microflowers: Effective ElectrochemicalSupercapacitor Behavior in Different Alkaline Electrolytes
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The self-organization of NH4CoPO4· H2O microflowers is successfully synthesized by a mild chemical precipitation method. And different pore sized Co2P2O7 microflowers are synthesized through different calcination temperatures of NH4CoPO4· H2O microflowers.

Measurement and estimation of supercapacitor life time
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The lifetime of a 350 F electrochemical double layer capacitor (EDLC) was estimated on the basis of leakage current measurements at various temperatures and voltages. Acceleration factors for the degradation processes at increased temperature and voltage were

Activated carbon and poly (3-methylthiophene)-based hybrid supercapacitor Basic Studies
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The goal of SCOPE project is to outperform the double layer carbon supercapacitors (DLSs) based on activated carbons (AC) of high surface area with polymerbased supercapacitors for electric vehicle applications. The electronically conducting polymers (ECPs), indeed,

Supercapacitor module sizing and heat management under electric, thermal, and aging constraints
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The module sizing methodology presented is valid for all electrochemical energy storage systems. The sizing parameters will be, of course, different from one energy storage type to the other, as they will be different from one manufacturer to the other. Electrochemical

Designing Transformerless Imbricated Cells Multilevel Inverter with Supercapacitor Storage
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ABSTRACT A detailed work has been done on the design and performance study of a threephase five-level imbricated cells PWM inverter. The heavy and bulky transformers that have been used in traditional inverters are eliminated completely from the system.

Application of supercapacitor to power small electronic appliances
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Abstract: The supercapacitor has been considered as a source of potential power. The charging of supercapacitor module has been established from photovoltaic module along with a constant voltage constant current converter to power Li-ion battery compatible

Manganese oxide thin films deposited by SILAR method for supercapacitor application
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Abstract. The amorphous MnO2 thin films were prepared by simple and inexpensive successive ionic layer adsorption and reaction (SILAR) method. The prepared thin films were characterized by means of X-ray diffraction (XRD), Fourier transform infrared

Debonding-induced fatigue life of a carbon-nanotube supercapacitor
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Summary. The progressive debonding between aligned carbon nanotubes and the hosting matrix in the direction normal to the CNTs axis is described by a mechanical model with evolutionary damage [1, 2, 3]. The Eshelby-Mori-Tanaka theory is used to describe the

Graphene paper: a suitable way to utilize graphene for supercapacitor electrodes
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Graphene with a theoretical specific surface area of 2630 m2g-1 [1] is a promising starting material for applications requiring high surface areas, like supercapacitor electrodes. One way to utilize graphene in an electrode structure is by preparing a so called free-standing

A Nanoporous Carbon/Exfoliated Graphite Composite For Supercapacitor Electrodes
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Abstract. Nanoporous carbon was prepared from coconut shells using a simple heating method. The nanoporous carbon is subjected to different treatments: without activation, activation with polyethylene glycol (PEG), and activation with sodium hydroxide (NaOH)-

Control strategies of embedded fuel cell–supercapacitor hybrid source
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Abstract:This paper proposes two innovative control strategies for a voltage regulated dc hybrid power source, employing PEM fuel cell as the main energy source and supercapacitors as the auxiliary power source. Both strategies are conceived with regard

Optimal sizing of supercapacitor bank for on–board energy storage system
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Abstract-The paper considers the problem of choosing the optimum size for an on-board energy storage system (ESS) based on supercapacitors (SCs) taking into account both the braking energy and the braking power of an electrical vehicle. Numerical simulations on

Synthesis and Electrochemical Characterization of Nickel. Oxide Nanoparticles Prepared Using Leavening Agent for Supercapacitor Application
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Abstract:Using leavening agent porous nickel oxide of nanocrystallite was prepared as an electrode material for supercapacitor application. Sodium bicarbonate (NaHCO3) is commonly used as a leavening agent to make breads and cakes spongy by the evolution

Effectiveness evaluation of a supercapacitor-battery parallel combination for hybrid heavy lift trucks
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Abstract In many hybrid configurations batteries continue to be the weakest component because they have a shorter lifespan than the vehicle. Large power demands in particular have a detrimental effect to a battery pack's lifespan. This paper investigates the effect of

Graphene layers supported by partially pyrolized nanodiamonds: a suitable composit material for supercapacitor electrodes
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Graphene with a theoretical specific surface area of 2630 m2g-1 [1] is a promising starting material for applications requiring high surface areas, like supercapacitors [2]. One way to utilize graphene for a supercapacitor electrode is by preparing a so called free-standing

Experimental Evaluation of Supercapacitor-Fuel Cell Hybrid Power Source for HY-IEL Scooter
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This paper presents the results of development of a hybrid fuel cell supercapacitor power system for vehicular applications that was developed and investigated at the Energy Sources Research Section of the Wroclaw Division of Electrotechnical Institute (IEL/OW).

Electrochemical Potential Windows of Supercapacitor Electrolytes from First-Principles Calculations
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Electrochemical potential windows of several organic liquid electrolytes for supercapacitors calculated using ab initio molecular orbital theory are reported. A supercapacitor (also known as an ultracapacitor or electric double-layer capacitor, EDLC) is an energy storage Here, P= Porient+ Pdef is the polarization (dipole moment of the unit volume of the environment) caused by the orientation of dipoles in a field with E intensity and deformation of the electron density of the environment molecules; p0 is the own dipole moment of the

Nanoporous separators for supercapacitor using activated carbon monolith electrode from oil palm empty fruit bunches
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Abstract. Activated porous carbon electrode prepared from fibres of oil palm empty fruit bunches was used for preparing the carbon based supercapacitor cells. The symmetrical supercapacitor cells were fabricated using carbon electrodes, stainless steel current

Digital control Strategy Based on Operate a Power Conditioner System for Hybrid Fuel Cell/Supercapacitor Power Source
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Abstract This paper proposes a digital control scheme to operate a Proton Exchange Membrane Fuel Cell (PEMFC) module a 1.2 kW and a Supercapacitor (SC) throught DC/DC hybrid converter. A FC has been proposed as a primary source of energy and a SC has

Optimization of Specific Capacitance for Hybrid Supercapacitor Material Based on Nickel-Manganese Oxides/multiwalled Carbon Nanotubes/Poly (3, 4-
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Abstract: Nickel-manganese oxide/Poly (3, 4-ethylenedioxythiophene)(NMO/MWCNTs/ PEDOT) nanocomposites have been prepared from emulsification of as-prepared NMO/MWCNT and aqueous acetonitrile solutions of EDOT by oxidation using Ferric

Load Frequency Control of a Small Isolated Power Station by Using Supercapacitor Based Energy Storage System
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Abstract-Electrical Power System is always subjected to different loading conditions; most of the loads vary in an unbalanced manner. This load variation gives negative impact on the entire power system parameters. There are two conditions which always occur in the

High-Efficiency Supercapacitor Charger Using an Improved Two-Switch Forward Converter
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Abstract This paper proposes a high-efficiency supercapacitor charger. Conventional two- switch forward converter can be used for charging supercapacitors. However, the efficiency of conventional converters is low because of their switching losses. This study presents a

A New Supercapacitor Design Methodology for Light Transportation Systems Saving
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Light transportation systems are not new proposals since their utilization started at dawn of electric energy spreading at industrial level. The light transportation systems class includes tramways, urban and subway metro-systems as well as trolley buses. These systems are

Fabrication of NiO Nanowires/G Composite as Electrode Material for High PerformanceSupercapacitor
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Layer structure of graphene explores wide potential for the development of novel electrochemical materials. In this paper, NiO nanowires/G composite (NOG) was fabricated by synthesis of NiO nanowires (NWs) from nickel carbonates basic nanosheets anchored

Simple Synthesis of Carboxylate–Rich Porous Carbon Microspheres for High-PerformanceSupercapacitor Electrode Materials
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Carboxylate–rich porous carbon microspheres with high specific surface area were synthesized via a simple hydrothermal carbonization method by using starch and acrylic acid as starting materials, followed by stream activation at 800 C in nitrogen atmosphere

Supercapacitor electrodes prepared from high surface area carbon black featuring high pseudocapacitance and electrolytic double layer capacitance
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Supercapacitors (supercaps) have found world-wide attraction as high power electrochemical energy source for applications in electronic devices and electric vehicles. They usually function on the basis of the formation of an electrolytic double layer (EDL) at

Supercapacitor energy storage for shuttle vessel
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Page 1. Supercapacitor energy storage for shuttle vessel Séminaire e-COST, IFFSTAR, Versailles-Satory, le 18/04/2013. Sony TRIESTE 1 Conclusion 13 Page 14. Supercapacitor electrical model There are 3 kind of energy in supercapacitor c sc represents the stored energy

Sythesis of High Voltage Supercapacitor and Electrochemical Performance
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The work unit for 100 V voltage of the hybrid supercapacitor is synthesized by using Ta/Ta2O5 as the anode, activated carbon as the cathode. Compared with the usual electrochemical capacitor working voltage, the capacitance had improved. The

Asymmetric Supercapacitor Containing Carbon Nanotube-Embedded Polyacrylonitrile-Based Carbon Nanofiber and d-MnO2 As Electrodes
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This investigation examines carbon nanotube (CNT)-embedded polyacrylonitrile-based carbon nanofibers (CNT/PAN-CNF) and d-MnO2 as electrodes for use in the asymmetric supercapacitor. The commercial CNT and the polyacrylonitrile precursor were mixed to

Effect of Voltage Unbalance on Adjustable Speed Drives and its Mitigation UsingSupercapacitor
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Abstract. During the voltage unbalance, the resulting adverse effects on equipments such as induction motors and power electronic converters and drives on ASDs have been described. It has been observed that during unsymmetrical fault, the input rectifier slips into the single

Graphene-nickel cobaltite nanocomposite asymmetrical supercapacitor with commercial level mass loading
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Abstract A high performance asymmetric electrochemical supercapacitor with a mass loading of 10 mg cm-2 on each planar electrode is fabricated by using graphene-nickel cobaltite nanocomposite (GNCC) as a positive electrode and commercial activated carbon

DEVELOPMENT OF A 10 KW SUPERCAPACITOR MODULE FOR FUEL CELL CAR APPLICATION
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Electric double layer capacitor electrodes based on high-surface area carbonaceous material and an Al-foil current collector were fabricated on a semi-industrial coating machine. From these electrodes 2.5 V/800 F supercapacitors were industrially

NiO-C NANOCOMPOSITE AND SUPERCAPACITOR APPLICATIONS
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Supercapacitor is a novel energy storage device discovered by Beckers in 1957 [1]. They possess significantly higher energy storage compared to conventional capacitors while maintaining a high specific power, and are useful in bridging the energypower gap

A NOVEL ZCS-ZVS HYBRID BIDIRECTIONAL DC-DC CONVERTER FOR FUEL CELL ANDSUPERCAPACITOR APPLICATION
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Abstract: This paper proposes a novel ZCS-ZVS hybrid bidirectional DC-DC converter based on fuel cells and supercapacitor devices. The described converter employs only one high frequency transformers to couple the half-bridge and full-bridge circuits together in the

Power Conditioning System (PCS) based on a Shunt Active Power Filter withSupercapacitor
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System (PCS) variety and its proposed application in distribution system. Suggested areas to use of the presented PCS system can be centered around two topics: grids with unstable power consumer and main apply which is ship's power systems. The proposed PCS can

Determination of Equivalent Circuit Parameters of Supercapacitor and its Testing with Three Phase Inverter
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Abstract Supercapacitor technology has been available commercially for over the past decade. They can store more energy than conventional capacitors and are available in various sizes. They can be charged and discharged faster than batteries. Because of so

Autonomous emergency LED luminaires powered by supercapacitor
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Abstract. In this article, the authors are describing possibility of supercapacitor usage for supplying emergency luminaires. Basic facts about modern supercapacitors and fundamental characteristics are provided initially. Analysis of usage of these energy storage application with super capacitors

A hybrid energy storage system based on compressed air and supercapacitors with maximum efficiency point tracking (MEPT)
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ABSTRACT In addition to the high-capacity storage facilities based on hydropower technologies, electrochemical solutions are today's candidate for storage for renewable energy sources support. However, sustainability and limited life cycles of batteries are 

Mechanisms of energy storage in carbon-based supercapacitors modified with a quinoid redox-active electrolyte
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The mechanisms involved in the storage of energy in carbon-based supercapacitors modified by the addition of an electrochemically active compound (quinone/hydroquinone, Q/HQ) into the electrolyte (H2SO4) are investigated. Besides the charging of the double- 

Nonlinear dielectric thin films for high-power electric storage with energy density comparablewith electrochemical supercapacitors
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ABSTRACT Although batteries possess high energy storage density, their output power is limited by the slow movement of charge carriers, and thus capacitors are often required to deliver high power output. Dielectric capacitors have high power density with fast 

Supercapacitor energy storage for wind energy applications
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ABSTRACT As wind energy reaches higher penetration levels, there is a greater need to manage intermittency associated with the individual wind turbine generators. This paper considers the integration of a short-term energy storage device in a doubly fed induction 

Overview of current and future energy storage technologies for electric power applications
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Also, typical state-of-the-art composite rotors have high specific energies, up to 100 Wh/kg, with high  Metal–air technology offers high energy density (compared to lead–acid batteries), and long shelf life while promising reasonable cost  4. Supercapacitor storage technologies. 

Graphene-based ultracapacitors
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 interface between an electrode and an electrolyte.(1) As the energy stored is inversely  packaging, and low maintenance.(2) Ultracapacitors are ideal for any application having a  that would dramatically accelerate their adoption in a wide range of energy storage applications. 

A supercapacitor-based energy-storage system for elevators with soft commutated interface
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ABSTRACT In recent years, power variations and energy criteria have been the main motivations for developing regenerative drive converters for elevators . A better performing solution for power smoothing can be easily found by using a supercapacitor- 

Energy storage systems for advanced power applications
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 Ultracapacitors can be stored completely discharged, installed easily, are compact in size, and can operate effectively in diverse (hot, cold, and moist) environments.  As with battery energy storage systems, application of ca- pacitors for power applications will be 

Energy storage with supercapacitors
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Energy storage with supercapacitors 

Transition from supercapacitor to battery behavior in electrochemical energy storage
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 Comparison of Theoretical Energies Realizable with Supercapacitor and Battery Systems It is of interest to derive  a super- capacitor having, say, a capacitance of 100 F g-~, the energy stored at 1  280 Wh kg-L Thus, supercapacity energy storage density will be on the order of 10 

Carbon materials for the electrochemical storage of energy in capacitors
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 6. Carbon nanostructures for the storage of energy.  It has been proved [44] and [45] that the nanotube electrodes used for the storage of lithium in aprotic  precludes this material from application in lithium-ion batteries, even if the amount of lithium reversibly stored reached in 

Electrochemical supercapacitors: Energy storage beyond batteries
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using polythiophine, polypyrrole, polyaniline and their related composites to achieve en- ergy storage of about  best values for capacitance (700 F/g). Nevertheless, the total charge stored in a  Similarly, they can be extremely valuable for energy-rich (high flux), power-poor (low 

Highly conductive paper for energy-storage devices
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fine control today (9). Paper has continued to expand its applications beyond information recording, and recently, novel applications such as  In this study, we demonstrated that the application of paper can be expanded even further to important energy-storage devices by 

Ultracapacitors: why, how, and where is the technology
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 power capability, the other reason for considering ultracapacitors for a particular application is their  The charge and energy stored are given by the same expressions as cited previously for  It is convenient to discuss the mechanisms for energy storage in ultracapacitors in terms 

Electrochemically synthesised conducting polymeric materials for applications towards technology in electronics, optoelectronics and energy storage devices
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 suspended in an organic medium together with a counter electrode gives an electrophoretic image storage and display  Such an application for the electrochemically polymerized semiconducting films appears to be quite feasible especially since  5.4.2. Solar energy conversion. 

Materials for electrochemical capacitors
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 than for a Li-ion battery (bulk storage), with a larger stored energy for the  T., Chmiola, J.Gogotsi, Y. in Carbon Materials for Electrochemical Energy Storage Systems (eds  engineerable and highly densely packed single-walled carbon nanotubes and their application as super 

Anomalous increase in carbon capacitance at pore sizes less than 1 nanometer
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 Energy stored in supercapacitors is linearly proportional to the capacitance of its electrodes, making  The demonstration of charge storage in pores smaller than the size of solvated  design of application-specific supercapacitors: for longer discharge times where energy density is 

Carbon-based supercapacitors produced by activation of graphene
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 rates and can have lifetimes of over a million cycles (1). However, the energy stored in supercapacitors is  M. Toupin,; T. Brousse,; D. Belanger. , Charge storage mechanism of  nanotubes as durable supercapacitor electrodes operable at 4 V with high power and energy density. 

Hierarchical nanocomposites of polyaniline nanowire arrays on graphene oxide sheets with synergistic effect for energy storage
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material.(19-24) However, the poor cycle life limits their real application in supercapacitors.  different materials at the nanoscale, a significant synergistic effect was achieved for energy storage.  the problem of increasing the quantities of electrode materials in the real applications. 

Shape-engineerable and highly densely packed single-walled carbon nanotubes and theirapplication as super-capacitor electrodes
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 its use as flexible heaters as well as supercapacitor electrodes for compact energy-storage devices.  3e). Similar application of light pressure at a shearing angle to the alignment induces  m strongly adhered on a copper contact, a form useful for multiple applications, for example 


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