Hasan, RahatScott, Jonathan B.2019-09-0220192019-09-022019Hasan, R., & Scott, J. B. (2019). Comments on ‘State of Charge-Dependent Polynomial Equivalent Circuit Modeling for Electrochemical Impedance Spectroscopy of Lithium-Ion Batteries’. IEEE Transactions on Power Electronics, 1–1. https://doi.org/10.1109/tpel.2019.29385080885-8993https://hdl.handle.net/10289/12816A 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]application/pdfen© 2019 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEEJournal Article10.1109/tpel.2019.29385081941-0107