Low-cost impedance spectrometer for characterizing electrochemical devices : Principles and applications of EIS

Principles and applications of EIS
Low-cost impedance spectrometer for characterizing electrochemical devices

Authors : Xin WANG, Zhongliang LI, Zhixue ZHENG, Daniel HISSEL

Publication date: September 10, 2026 | Lire en français

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1. Principles and applications of EIS

The definition of impedance is based on Ohm’s law applied to a sinusoidal operating condition:

\underline{Z (ω)} = \frac{\underline{V_{ac} (ω)}}{\underset{}{I_{ac} (ω)}}

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Principles and applications of EIS

(1) - WANG (H.), GAILLARD (A.), HISSEL (D.) - Online electrochemical impedance spectroscopy detection integrated with step-up converter for fuel cell electric vehicle. - International Journal of Hydrogen Energy, 44(2), p. 1110-1121 (2019).
(2)...

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