Ultracapacitors modeling improvement using an experimental characterization based on step and frequency responses

Lajnef, Walid; Vinassa, Jean-Michel; Azzopardi, Stéphane; Briat, Olivier; Woirgard, Eric; Zardini, Christian; Aucouturier, Jean-Louis

doi:10.1109/pesc.2004.1355728

Cited by 11 publications

(5 citation statements)

References 2 publications

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“…It is evident from this study that the EPPGE-SWCNT-Co has the least R ct value indicating faster electron transport. Circuit 4b description is different from the circuit used in earlier report involving SWCNT/Ni [22] probably because of the porous nature of the EPPGE which alters its electronic properties with use [63]. The relatively low R ct for the SWCNT-Co indicates faster electron transport compared to the other electrodes, possibly as a result of the porous and the high electroactive surface area of the electrode which allows for easy contact between the electrolyte and the base EPPGE.…”

Section: Comparative Electron Transport Propertiesmentioning

confidence: 90%

Probing the electrochemical behaviour of SWCNT–cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions

Adekunle

Pillay

Ozoemena

2010

Electrochimica Acta

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a b s t r a c tThe electrochemical decoration of edge plane pyrolytic graphite electrode (EPPGE) with cobalt and cobalt oxide nanoparticles integrated with and without single-walled carbon nanotubes (SWCNTs) is described. Successful modification of the electrodes was confirmed by field emission scanning electron microscopy (FESEM), AFM and EDX techniques. The electron transfer behaviour of the modified electrodes was investigated in [Fe(CN)6] 3−/4− redox probe using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) and discussed. The study showed that cobalt nanoparticles modified electrodes exhibit faster electron transfer behaviour than their oxides. The catalytic rate constant (K) obtained at the EPPGE-SWCNT-Co for nitrite at pH 7.4 and 3.0 are approximately the same (∼3 × 10 4 cm 3 mol −1 s −1 ) while the limits of detection (LoD = 3.3ı/m) are in the M order. From the adsorption stripping voltammetry, the electrochemical adsorption equilibrium constantˇwas estimated as (13.0 ± 0.1) × 10 3 M −1 at pH 7.4 and (56.7 ± 0.1) × 10 3 M −1 at pH 3.0 while the free energy change ( G • ) due to the adsorption was estimated as −6.36 and −10.00 kJ mol −1 for nitrite at pH 7.4 and 3.0, respectively.

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Section: Comparative Electron Transport Propertiesmentioning

confidence: 90%

Probing the electrochemical behaviour of SWCNT–cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions

Adekunle

Pillay

Ozoemena

2010

Electrochimica Acta

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“…Different studies were devoted to ultracapacitor modelling [11,[13][14][15]. An overview of these works combined with an analysis of experimental data shows that the ultracapacitor electric model has to take into account many phenomena which are:…”

Section: Proposed Electric Model For Ultracapacitorsmentioning

confidence: 99%

Characterization methods and modelling of ultracapacitors for use as peak power sources

Lajnef

Vinassa

Briat

et al. 2007

Journal of Power Sources

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128

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“…There are several ways to model ultracapacitors (UCs) in the scientific literature. Three standard models are the distributed constant model, the localized constant model, and the behavioral model with two branches [50], [51]. The generalized model consists of a capacitance, Cuc , and a series resistance, Ruc .…”

Section: ) Battery Modelmentioning

confidence: 99%

Energy Management Systems for Electric Vehicles: A Comprehensive Review of Technologies and Trends

Munsi,

Chaoui

2024

IEEE Access

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As the demand for electric vehicles (EVs) continues to surge, improvements to energy management systems (EMS) prove essential for improving their efficiency, performance, and sustainability. This paper covers the distinctive challenges in designing EMS for a range of electric vehicles, such as electrically powered automobiles, split drive cars, and P-HEVs. It also covers significant achievements and proposed solutions to these issues. The powertrain concept for series, parallel, series-parallel, and complex hybrid electric cars was also disclosed in this study. Much of this analysis is dedicated to investigating the various control strategies used in EMS for various electric vehicle types, which include global-optimization approaches, fuzzy rule based, and real-time optimization-oriented strategies. The study thoroughly evaluates the strengths and shortcomings of various electric vehicle strategies, offering valuable insights into their practical implementation and effectiveness across different EV models, such as BEVs, HEVs, and PHEVs.

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Ultracapacitors modeling improvement using an experimental characterization based on step and frequency responses

Cited by 11 publications

References 2 publications

Probing the electrochemical behaviour of SWCNT–cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions

Probing the electrochemical behaviour of SWCNT–cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions

Characterization methods and modelling of ultracapacitors for use as peak power sources

Energy Management Systems for Electric Vehicles: A Comprehensive Review of Technologies and Trends

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