Comparative Analysis of a New Class of Symmetric and Asymmetric Supercapacitors Constructed on the Basis of ITO Collectors

Michał Gocki, Agnieszka Jakubowska-Ciszek and Piotr Pruski ()
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Michał Gocki: Scientific and Didactic Laboratory of Nanotechnology and Material Technologies, Faculty of Mechanics and Technology, Silesian University of Technology, 44-100 Gliwice, Poland
Agnieszka Jakubowska-Ciszek: Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland
Piotr Pruski: Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland

Energies, 2022, vol. 16, issue 1, 1-16

Abstract: The paper presents the results of research on new electroconductive polymer materials, based on polypyrrole, for the different supercapacitor constructions, i.e., the symmetric and asymmetric constructions. All the supercapacitors considered contain ITO collectors. Measurements of the complex impedance frequency characteristics were performed for these elements using the electrochemical impedance spectroscopy (EIS) method. Selected fractional-order models, known from the literature, have been used to model the impedance of these elements. The Particle Swarm Optimization (PSO) algorithm was used to estimate the model parameters. Selected estimation results, their comparison, and conclusions are also presented in the paper. The type of active electrolyte component has the greatest impact on the shape of the impedance frequency characteristics. In most cases, the highest capacitance values and the smallest resistance values were obtained for asymmetric supercapacitors.

Keywords: symmetric and asymmetric supercapacitors; fractional-order impedance; model parameters estimation; ITO collectors (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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