Publication detail

Supercapacitors – Charge Redistribution and Restoring Voltage

KUPAROWITZ, T. SEDLÁKOVÁ, V. SZEWCZYK, A. HASSE, L. SMULKO, J. MAJZNER, J. SEDLÁK, P. ŠIKULA, J.

Original Title

Supercapacitors – Charge Redistribution and Restoring Voltage

English Title

Supercapacitors – Charge Redistribution and Restoring Voltage

Type

conference paper

Language

en

Original Abstract

The charge in supercapacitor is stored on electrodes and in electrolyte. The charge on electrodes create the Helmholtz double layer which is formed immediately with time constant of the order of seconds, while the charge storage in electrolyte is going on with time constant of the order of hundreds seconds. When the charged supercapacitor is shorted for few seconds, the charge from electrodes is discharged while the charge in electrolyte remains mostly unchanged. The charge from electrolyte is redistributed by diffusion to the electrodes, until the charge on electrodes form the electric field which acts against the charge concentration gradient. Supercapacitor capacitance value depends on the voltage supercapacitor terminals; with increasing voltage total capacitance increases.

English abstract

The charge in supercapacitor is stored on electrodes and in electrolyte. The charge on electrodes create the Helmholtz double layer which is formed immediately with time constant of the order of seconds, while the charge storage in electrolyte is going on with time constant of the order of hundreds seconds. When the charged supercapacitor is shorted for few seconds, the charge from electrodes is discharged while the charge in electrolyte remains mostly unchanged. The charge from electrolyte is redistributed by diffusion to the electrodes, until the charge on electrodes form the electric field which acts against the charge concentration gradient. Supercapacitor capacitance value depends on the voltage supercapacitor terminals; with increasing voltage total capacitance increases.

Keywords

Supercapacitor; Diffuse capacitance; Charge diffusion; Restoring voltage

RIV year

2014

Released

25.06.2014

Publisher

Vysoké učení technické v Brně

Location

Brno

ISBN

978-80-214-4985-5

Book

Proceedings

Pages from

145

Pages to

150

Pages count

6

BibTex


@inproceedings{BUT108692,
  author="Tomáš {Kuparowitz} and Vlasta {Sedláková} and Arkadiusz {Szewczyk} and Lech {Hasse} and Janusz {Smulko} and Jiří {Majzner} and Petr {Sedlák} and Josef {Šikula}",
  title="Supercapacitors – Charge Redistribution and Restoring Voltage",
  annote="The charge in supercapacitor is stored on electrodes and in electrolyte. The charge on electrodes create the Helmholtz double layer which is formed immediately with time constant of the order of seconds, while the charge storage in electrolyte is going on with time constant of the order of hundreds seconds. When the charged supercapacitor is shorted for few seconds, the charge from electrodes is discharged while the charge in electrolyte remains mostly unchanged. The charge from electrolyte is redistributed by diffusion to the electrodes, until the charge on electrodes form the electric field which acts against the charge concentration gradient. Supercapacitor capacitance value depends on the voltage supercapacitor terminals; with increasing voltage total capacitance increases.",
  address="Vysoké učení technické v Brně",
  booktitle="Proceedings",
  chapter="108692",
  howpublished="print",
  institution="Vysoké učení technické v Brně",
  year="2014",
  month="june",
  pages="145--150",
  publisher="Vysoké učení technické v Brně",
  type="conference paper"
}