Estimation of Parameters Obtained by Electrochemical Impedance Spectroscopy on Systems Containing High Capacities

doi:10.3390/s90907365

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Sensors 2009, 9(9), 7365-7373; doi:10.3390/s90907365

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Estimation of Parameters Obtained by Electrochemical Impedance Spectroscopy on Systems Containing High Capacities

Zoran Stević^1,* , Mirjana Rajčić Vujasinović¹ and Milan Radunović²

¹ University of Belgrade, Technical Faculty in Bor, VJ 12, 19210 Bor, Serbia ² Faculty FUTURA, University Singidunum, Bulevar Mihajla Pupina 12a, 11070 New Belgrade, Serbia

* Author to whom correspondence should be addressed.

Received: 29 July 2009; in revised form: 3 September 2009 / Accepted: 7 September 2009 / Published: 11 September 2009

(This article belongs to the Section Chemical Sensors)

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Abstract: Electrochemical systems with high capacities demand devices for electrochemical impedance spectroscopy (EIS) with ultra-low frequencies (in order of mHz), that are almost impossible to accomplish with analogue techniques, but this becomes possible by using a computer technique and accompanying digital equipment. Recently, an original software and hardware for electrochemical measurements, intended for electrochemical systems exhibiting high capacities, such as supercapacitors, has been developed. One of the included methods is EIS. In this paper, the method of calculation of circuit parameters from an EIS curve is described. The results of testing on a physical model of an electrochemical system, constructed of known elements (including a 1.6 F capacitor) in a defined arrangement, proved the validity of the system and the method.

Keywords: electrochemical measurements; measurement system; electrochemical impedance spectroscopy; supercapacitors

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MDPI and ACS Style

Stević, Z.; Vujasinović, M.R.; Radunović, M. Estimation of Parameters Obtained by Electrochemical Impedance Spectroscopy on Systems Containing High Capacities. Sensors 2009, 9, 7365-7373.

AMA Style

Stević Z., Vujasinović M.R., Radunović M. Estimation of Parameters Obtained by Electrochemical Impedance Spectroscopy on Systems Containing High Capacities. Sensors. 2009; 9(9):7365-7373.

Chicago/Turabian Style

Stević, Zoran; Vujasinović, Mirjana R.; Radunović, Milan. 2009. "Estimation of Parameters Obtained by Electrochemical Impedance Spectroscopy on Systems Containing High Capacities." Sensors 9, no. 9: 7365-7373.

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