Simple non-impedance-based measuring technique for supercapacitors

G. Tsirimokou; C. Psychalinos; A. Allagui; A.S. Elwakil

Simple non-impedance-based measuring technique for supercapacitors

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Author(s): G. Tsirimokou ¹ ; C. Psychalinos ¹ ; A. Allagui ² ; A.S. Elwakil ³
- Affiliations: 1: Electronics Laboratory, Physics Department, University of Patras, Rio Patras, GR 26504, Greece ;
  2: Department of Sustainable and Renewable Energy, College of Engineering, University of Sharjah, P.O. Box27272 Sharjah, UAE ;
  3: Department of Electrical and Computer Engineering, College of Engineering, University of Sharjah, P.O. Box 27272 Sharjah, UAE
Source: Volume 51, Issue 21, 08 October 2015, p. 1699 – 1701
DOI: 10.1049/el.2015.2395 , Print ISSN 0013-5194, Online ISSN 1350-911X

Received 16/07/2015, Published 01/10/2015

It is shown that the electric characterisation of supercapacitors cannot simply be performed by standard LCR meters, as these devices do not account for the fractional capacitance behaviour. The accurate modelling of their frequency-dependent impedance requires direct impedance measurement using electrochemical impedance spectroscopy. A very simple and cost-effective alternative using a single operational amplifier-based circuit to extract the parameters of a supercapacitor without requiring the use of an expensive electrochemical station or a post-processing data fitting algorithm is presented.

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Simple non-impedance-based measuring technique for supercapacitors

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