Charge Redistribution and Restoring voltage of Supercapacitors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU111743" target="_blank" >RIV/00216305:26220/14:PU111743 - isvavai.cz</a>
Result on the web
<a href="http://147.228.94.30/images/PDF/Rocnik2014/Cislo3_2014/r8c3c5.pdf" target="_blank" >http://147.228.94.30/images/PDF/Rocnik2014/Cislo3_2014/r8c3c5.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Charge Redistribution and Restoring voltage of Supercapacitors
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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