EIS involves applying a small, alternating current (AC) voltage to a sample and measuring the resulting current. The frequency of the AC signal is varied over a range, and the impedance is calculated at each frequency. The data is typically represented in the form of a Nyquist plot or Bode plot, which can be analyzed to extract meaningful parameters such as resistance, capacitance, and inductance. These parameters provide information about the electrochemical processes and material properties at the nanoscale.
