Electrochemical impedance spectroscopy (EIS) is a useful diagnostics technique for lithium-ion batteries but measurements can last several hours. Fast pulse impedance spectroscopy (PIS) is thus proposed using just 2 minutes of pulse perturbation data and classic signal processing techniques. The method is verified using experimental data collected from 6 lithium-ion cells aged under different temperatures and charging levels. Results show that PIS can extract high-quality Nyquist plots for overpotential analysis. Comparison is made between the frequency- and time-domains using the Randles and convolution-defined diffusion equivalent circuit models. PIS is a practical time-domain impedance spectroscopy method that experimentally links EIS and convolution-defined diffusion.


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    Titel :

    Fast Time-domain Impedance Spectroscopy of Lithium-ion Batteries using Pulse Perturbation


    Beteiligte:
    Li, Alan G. (Autor:in) / Fahmy, Youssef A. (Autor:in) / Wu, Melissa M. (Autor:in) / Preindl, Matthias (Autor:in)


    Erscheinungsdatum :

    2022-06-15


    Format / Umfang :

    5366153 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch