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Randles circuit
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Bode and Nyquist Plot
In this chapter the two main ways of visualizing Electrochemical Impedance Spectra (EIS), the Nyquist and Bode plot, are presented and it is explained how different EIS of easy electronic circuits will be plotted in the Bode and Nyquist plot. This demonstrates the advantages and disadvantages of the two plots as well as serving as …
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Equivalent circuit fitting for corrosion measurements
Understanding the Impedance Spectrum with a Bode or Nyquist and a few simple electronic components often doesn’t suffice. In this section of the handbook the Warburg Impedance and the Constant Phase Element (CPE) are introduced, which represent electrochemical effects with no corresponding real electronic components. Furthermore, some equivalent circuits for typical corrosion systems are presented. …