Topics to be covered
- the motivation for using impedance spectroscopy advantages as compared to other transient techniques and the conditions under which its use is ideally suited,
- complex numbers and electrical circuit parameters,
- the basic concepts of how impedance is measured,
- proper selection of experimental parameters,
- graphical representation of impedance data, including methods to extract some physically meaningful parameters,
- application of electrical circuit analogues, and
- an introduction to interpretation based on proposed reaction mechanisms.
The concepts will be illustrated by applications to different systems including corrosion, fuel cells, batteries, and transport through membranes such as skin. A list of suggested references will be provided.
This course is the first in a two course sequence offered at alternating ECS meetings by Professor Orazem. The second course in the series, “Advanced Impedance Spectroscopy,” introduces model development based on proposed reaction mechanisms, statistical analysis of impedance data, and regression analysis.