Impedance Spectroscopy, Strength and Limitations (Impedanzspektroskopie, Stärken und Grenzen)

Abstract Electrochemical impedance spectroscopy (EIS) has become an important tool in Solid State Electrochemistry. Simple Kramers-Kronig transform data validation assures selection of high quality data for subsequent CNLS-fit analysis. Optimized starting parameters and probable equivalent circuit can be obtained through a de-convolution based pre-analysis procedure. Combination of time-domain measurements with frequency-domain analysis extends impedance measurements in to the μHz range.