Publication detail

Charge Redistribution and Restoring voltage of Supercapacitors

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

Original Title

Charge Redistribution and Restoring voltage of Supercapacitors

English Title

Charge Redistribution and Restoring voltage of Supercapacitors

Type

journal article - other

Language

en

Original Abstract

Electric charge in supercapacitor is stored on electrodes as well as inside its electrolyte. Charges on electrodes create Helmholtz double layer which is formed immediately with time constant in the order of seconds, while the storage of charge in electrolyte takes time in the order of hundreds of seconds. When the charged supercapacitor is briefly short-circuited, the charge on electrodes is discharged, however the charge in electrolyte remains mostly unchanged. The charge stored in electrolyte is redistributed by diffusion to the electrodes, until the charge on electrodes form electric field which acts against the charge concentration gradient and equilibrium state occursfor charge-carrier exchange at electrode/electrolyte interface. Supercapacitor capacitance value depends on the voltage of its terminals; with increasing voltage total capacitance increases

English abstract

Electric charge in supercapacitor is stored on electrodes as well as inside its electrolyte. Charges on electrodes create Helmholtz double layer which is formed immediately with time constant in the order of seconds, while the storage of charge in electrolyte takes time in the order of hundreds of seconds. When the charged supercapacitor is briefly short-circuited, the charge on electrodes is discharged, however the charge in electrolyte remains mostly unchanged. The charge stored in electrolyte is redistributed by diffusion to the electrodes, until the charge on electrodes form electric field which acts against the charge concentration gradient and equilibrium state occursfor charge-carrier exchange at electrode/electrolyte interface. Supercapacitor capacitance value depends on the voltage of its terminals; with increasing voltage total capacitance increases

Keywords

Supercapacitor; Diffuse capacitance; Charge diffusion; Restoring voltage

RIV year

2014

Released

05.12.2014

Publisher

ElectroScope

Location

Univerzitní 8, 306 15 Plzeň

Pages from

1

Pages to

7

Pages count

7

URL

BibTex


@article{BUT111250,
  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="Charge Redistribution and Restoring voltage of Supercapacitors",
  annote="Electric charge in supercapacitor is stored on electrodes as well as inside its electrolyte. Charges on electrodes create Helmholtz double layer which is formed immediately with time constant in the order of seconds, while the storage of charge in electrolyte takes time in the order of hundreds of seconds. When the charged supercapacitor is briefly short-circuited, the charge on electrodes is discharged, however the charge in electrolyte remains mostly unchanged. The charge stored in electrolyte is redistributed by diffusion to the electrodes, until the charge on electrodes form electric field which acts against the charge concentration gradient and equilibrium state occursfor charge-carrier exchange at electrode/electrolyte interface. Supercapacitor capacitance value depends on the voltage of its terminals; with increasing voltage total capacitance increases",
  address="ElectroScope",
  chapter="111250",
  howpublished="online",
  institution="ElectroScope",
  number="3",
  volume="2014",
  year="2014",
  month="december",
  pages="1--7",
  publisher="ElectroScope",
  type="journal article - other"
}