Glossary
Low-cost impedance spectrometer for characterizing electrochemical devices

Electronic load

Controllable impedance electronic load; applies to discharging batteries or fuel cells, for example.

Relaxation time distribution (DRT)

A method for analyzing impedance spectra that allows the overall response of an electrochemical system to be decomposed into individual contributions, each corresponding to a relaxation process characterized by a specific relaxation time.

Root mean square error (RMSE)

A statistical measure of the difference between observed values and predicted or estimated values, calculated as the square root of the mean of the squares of the deviations.

Proton Exchange Membrane (PEM)

A proton-permeable electrolytic membrane used in fuel cells to facilitate the transport of H...