Impedance of Lithium Ion Batteries — Basic Models and Differential Analysis

摘要: The Electrochemical Impedance Spectroscopy is a powerful method for the investigation of Li intercalation in Li-ion batteries. deeper knowledge about this very complicated, but extremely important charge and discharge characteristics process, essential optimization electrodes composition microstructure, electrolyte composition, power density safety. main advantage ac measurements unique possibility separation kinetics several different steps, describing entire electrochemical process. choice model, which should correspond to structure properties object under study, an moment correct interpretation impedance data. Basically, model assumed priori, weak point present day analysis. Frequently complicated rich on phenomena objects are approximated with more simple models. In way information included experimental data could be left unidentified. For instance description Randies may regarded some cases as simplification.