High-Frequency Features in the Distribution of Relaxation Times Related to Frequency Dispersion Effects in SOFCs

Electrochemical impedance spectroscopy (EIS) is commonly used for the characterization of electrochemical systems, such as solid oxide fuel cells (SOFCs). In recent years, distribution relaxation times (DRT) analysis has attracted increasing interest a tool investigating loss mechanisms in due to its ability resolve features that overlap complex planes. Among methods deconvolution function times, DRTtools user-friendly graphical user interface. this study, we investigate root cause expression additional DRT high-frequency range and link them characteristic properties processes contribute polarization SOFCs. Identification leading performed by conducting simulation study with synthetic EIS spectra are then analyzed using DRTtools. It been shown constant phase element behavior SOFCs peaks DRT.