ADVANCED IMPEDANCE TECHNIQUES FOR LITHIUM BATTERIES STUDY Part Ⅲ: Four Dimensional Analysis

摘要

The problem of non-stationary analysis plays an important role in the development of Impedance Spectroscopy. That is mainly due to the fact that most of the electrochemical systems possess an intrinsic non-stationary nature. The theoretical basis for solving this problem is the defining of the instantaneous Impedance. The present lecture is devoted to an experimental technique for estimation of the Instantaneous Impedance. The experimental design for measuring the Instantaneous Impedance is described in detail on the basis of the Four-Dimensional approach. A special technique is proposed for validation of the modeling. It utilizes a posterior evaluation of the model consistency.