Impedance Spectroscopy (IS) and Electrochemistry of Solids: Fundamentals and Applications

    Code: CEM 162

    Credits: 05

    Elective subject

    Contents:

    • Introduction - basic concepts about impedance;
    • Alternating current and direct current; complex numbers;
    • The different formalisms for presenting impedance data: impedance, admittance, electrical module;
    • Representation in the complex plane (Nyquist diagram) and Bode graph;
    • Characteristics of Nyquist diagram: evolution with temperature, frequency distribution, relaxation frequency; decentralization angle;
    • electrode reactions; ionic and electronic conductivity;
    • Dielectric relaxation and conduction: equivalent models and circuits;
    • Practical exercises: measurements of ideal RC circuits; Measurement of the resistance of a model ionic glass by IS, as a function of temperature; calculation of the electrical (ionic) conductivity and activation energy for ionic conduction.
    • Solid state electrochemistry concepts.


    References:

    1. E. Barsoukov, J.R.Macdonald, Impedance Spectroscopy, Theory, Experiment, and applications, 2005, 2nd edition, John Wiley&Sons.
    2. V.F. Lvovich, Impedance Spectroscopy, Applications to Electrochemical and Dielectric Phenomena, 2012, John Wiley & Sons.
    3. M.E. Orazem, B. Tribollet, Electrochemical Impedance Spectroscopy, 2008, John Wiley & Sons.
    4. C. Déportes et all, «Electrochimie du Solide», Presses Universitaires de Grenoble, 1994.