New Approach to Ultracapacitor Technology: What it Can Offer to Electrified Vehicles

Maletin, Natalia Stryzhakova Yurii; Chernukhin,, None Sergii Zelinskyi, Sergey; Tretyakov, Hugo Mosqueda Dmytro; Davydenko, N.

doi:10.17265/1934-8975/2015.06.010

Cited by 4 publications

(6 citation statements)

References 8 publications

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“…The charge voltage of individual elements of SC has a limiting value, after which their irreversible rapid electrochemical decomposition arises. To increase the permissible operation voltage in real systems, separate elements of SC are usually connected in series forming batteries from energy storage devices [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The scientific analysis of the energy characteristics of SC, LC and AB in the combined power supply systems showed [6][7][8][9][10][11] that the studies were performed without analyzing the dependences of the difference in energy accumulated in SC and LC in the process of charge (from zero initial voltage to U f = U n /n) on the variation parameter n. The dependence of the energy accumulated in capacitors during the charge time on the value of final voltage on the terminals of capacitors when charging from AB was not investigated.…”

Section: Introductionmentioning

confidence: 99%

“…given by AB during the transition process. From the expressions (2) to (7) and (20), one can obtain the energy of losses [2,13] in the circuit of charge of LC and SC from AB. The energy of losses is the difference between the energy given by AB and the energy received in the process of charge by LC or SC:…”

mentioning

confidence: 99%

“…According to the expressions (2) to (7), SC accumulates more energy than LC charged to the same voltage, therefore, when discharging SC and LC, having the same internal resistances (R LC = R SC ) and being charged to the same voltage, SC will give the load resistance R n more energy and with greater pulse power than LC [2].…”

mentioning

confidence: 99%

“…From the formulae (2) to (7), we can obtain the expression for the LC capacitance C W , which is equivalent to the capacitance of SC [10], provided that the energies accumulated in them (W LC = W SC ) and the voltages on the plates (U LC = U SC ) are equal:…”

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confidence: 99%

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Energy processes in combined power supplies with linear capacitors and supercapacitors

Biletskyi¹

2019

Semicond. phys., quantum electron. optoelectron.

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In this paper, energy processes in combined power supplies with supercapacitors (nonlinear capacitors) and linear capacitors at their charge from a non-ideal DC source, for which there is a rechargeable battery, have been analyzed. The energy characteristics of charge circuits in combined power supplies with supercapacitors and linear capacitors have been obtained. An analysis of the dependence of the energy difference accumulated in the supercapacitor and in the linear capacitor in the process of charge (from zero initial conditions to voltage U f = U n /n), on the variations of the parameter n, has been performed. The dependence of the energy ratio accumulated in the capacitors during the charge period on the value of the final voltage on the terminals of the capacitors has been investigated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Energy processes in combined power supplies with linear capacitors and supercapacitors

Biletskyi¹

2019

Semicond. phys., quantum electron. optoelectron.

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The triad “electrode – solid electrolyte interphase – electrolyte” as a ground for the use of conversion type reactions in lithium-ion batteries

Kuksenko¹,

Kaleniuk²,

Tarasenko³

et al. 2021

Him. Fiz. Tehnol. Poverhni

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The solution to the problem of negative impact on the ecology of fossil fuel consumption is the use of electrochemical energy sources. The special attractiveness has shown of lithium power sources is highlighted and the need to develop new cheap electrode materials and electrolytes with unique properties. The peculiarities of the behavior of lithium and the formation of a layer of reaction products on its surface upon contact with a liquid organic electrolyte have considered. The analysis of the main problems and ways of their solution at use of conversion electrodes of the II type for lithium-ion batteries has carried out. Emphasis is placed on the need to use in the development of new electrode materials of such parameters as capacity loading and accumulated irreversible capacity of the electrodes. The triad “electrode – solid electrolyte interphase – electrolyte” is considered as a basis of a systematic approach to the creation of new generations of lithium power sources. The optimal scenarios have proposed for the formation of an effective solid electrolyte interphase on the surface of the electrodes. The advantages of electrolytes based on fluoroethylene carbonate with synergistic acting additives of vinylene carbonate and ethylene sulfite are described. A new strategy for the use of “secondary” silicon nanomaterials to prevent direct contact of its surface with the electrolyte has considered. It has shown that the solid electrolyte interphase is a dynamic system that self-organizes from the unstable state into a stable one. The electrochemical behavior of electrodes with silicon nanocomposites with high capacity loading and low accumulated irreversible capacity has described.

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Regularities of Changes in the Energy Efficiency of the Supercapacitor Discharge to Linear Active Load When the Duration of the Discharge Changes

Shcherba,

Suprunovska,

Belkin

et al. 2023

Praci Inst. elektrodin. Nac. akad. nauk Ukr.

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In the paper, the regularities of changes in electricity losses and the coefficient of its transfer to a linear active load during the discharge of a supercapacitor on the load under different conditions of interruption of discharge currents are determined. The influence of the conditions of interruption of discharge currents of the supercapacitor on the energy characteristics of the discharge circuit is determined, taking into account the fact that the capacity of the supercapacitor is a function of the voltage at its terminals. It was taken into account that this voltage can change its polarity. A mathematical model was developed that takes into account that the discharge process can be both aperiodic and oscillatory. The model was implemented in the Mat-lab/Simulink software package. A comparison of the energy characteristics during the discharge of a supercapacitor and a conventional linear capacitor on the same linear load at the same initial voltage on these capacitors was carried out. It has been established that the energy delivered to the load during the discharge of a supercapacitor is 1.8 times greater than dur-ing the discharge of a conventional linear capacitor charged to the same voltage, but the efficiency of energy transfer for these processes is almost the same. However, when the discharges of a supercapacitor and a conventional linear capacitor are forcibly interrupted, the efficiency of energy transfer to the load increases, and the efficiency during the discharge of the supercapacitor is always higher. Bibl. 14, fig. 3, tables 2. Key words: supercapacitor, capacitor, discharge, linear load, electricity losses, energy transfer efficiency.

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New Approach to Ultracapacitor Technology: What it Can Offer to Electrified Vehicles

Cited by 4 publications

References 8 publications

Energy processes in combined power supplies with linear capacitors and supercapacitors

Energy processes in combined power supplies with linear capacitors and supercapacitors

The triad “electrode – solid electrolyte interphase – electrolyte” as a ground for the use of conversion type reactions in lithium-ion batteries

Regularities of Changes in the Energy Efficiency of the Supercapacitor Discharge to Linear Active Load When the Duration of the Discharge Changes

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