Effect of state of charge on impedance spectrum of sealed cells Part I: Ni-Cd cells

Autor:	J. B. Ockerman, V. V. Viswanathan, A. J. Salkind, J. J. Kelley
Rok vydání:	1995
Předmět:	Chemistry General Chemical Engineering Impedance matching Analytical chemistry Quarter-wave impedance transformer Impedance parameters Characteristic impedance Dielectric spectroscopy Materials Chemistry Electrochemistry Wave impedance Output impedance Atomic physics Electrical impedance
Zdroj:	Journal of Applied Electrochemistry. 25:716-728
ISSN:	1572-8838 0021-891X
DOI:	10.1007/bf00648627
Popis:	Alternating current impedance spectroscopy (ACIS) was performed on commercial sealed Ni-Cd cells. A method previously developed in the literature was modified to determine the state of charge of sealed Ni-Cd cells by obtaining the impedance spectrum in a wide frequency range. The impedance parameters were sensitive to state of charge at low frequencies. A modified Randles' circuit was used to fit the impedance data. Appropriate modifications were made to account for an additional high frequency arc or a low frequency finite diffusion element. The effect of the state of charge on the equivalent circuit parameters was determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0f65609078729f24124a0d1153e97949 https://doi.org/10.1007/bf00648627 Zobrazit plný text záznamu Full text from SpringerLink