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A complete impedance analysis of electrochemical cells used as energy sources

Abstrakt

A comprehensive description of impedance ofelectrochemical systems has been presented, along withthe assumptions of the method used. In this method, amultisinusoidal current excitation signal is used. Thechanges of potential of both the electrodes and thepotential difference between these electrodes are allregistered simultaneously as a function of time. Theproposed method offers the possibility of separatelydetermining the instantaneous value of impedance ofeach electrode as well as the impedance of a twoelectrodesystem. The short-time Fourier transform oftime registers allow the determination of changes in themeasured impedance values over time. The method hasbeen successfully verified with an electrical equivalentcircuit simulating a non-stationary two-electrode system.The values of the impedance of particular componentsduring operation of the fuel cell under a changingload have been obtained.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
JOURNAL OF SOLID STATE ELECTROCHEMISTRY nr 16, wydanie 11, strony 3539 - 3549,
ISSN: 1432-8488
Język:
angielski
Rok wydania:
2012
Opis bibliograficzny:
Ślepski P., Darowicki K., Janicka E., Lentka G.: A complete impedance analysis of electrochemical cells used as energy sources// JOURNAL OF SOLID STATE ELECTROCHEMISTRY. -Vol. 16, iss. 11 (2012), s.3539-3549
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1007/s10008-012-1825-1
Weryfikacja:
Politechnika Gdańska

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