Comments on “State of Charge-Dependent Polynomial Equivalent Circuit Modeling for Electrochemical Impedance Spectroscopy of Lithium-Ion Batteries”

A recent paper by Wang et al proposes a state of charge-dependent polynomial equivalent circuit model for lithium batteries. The model consists of an inductor, a Warburg element, a constant phase element (CPE) and two resistors [1]. Figure 1 shows the equivalent circuit model reproduced from [1