Dfrttoeis: An Easy Approach To Verify The Consistency Of A Dfrt Generated From An Impedance Spectrum

Electrochemical Impedance Spectroscopy (EIS) is a leading tool for the characterization of electrochemical processes in a wide class of materials. The combined analysis of EIS with the estimation of Distribution Function of Relaxation Times (DFRT) can help to differentiate overlapped polarizations in the frequency domain and to provide a greater understanding of a suitable electrical circuit to model the impedance data. To ensure that the calculated DFRT agrees with the experimental impedance, a practical procedure is to reconstruct the impedance from the DFRT. In this work, we present a user-friendly, free to use, graphical interface that allows the transformation of DFRT data into a synthetic impedance spectrum that can be compared with the original experimental data. Besides the validation test of the DFRT, our solution allows the adjustment of the DFRT peaks to automatically estimate the resistance, time constants and capacitances of each response. (C) 2020 Elsevier Ltd. All rights reserved.