TY  - JOUR
AU  - Calles, Simon
AU  - Heitjans, Paul
AU  - Börger, Alexander
PY  - 2022
DA  - 2022/04/18
TI  - Electrochemical Impedance Spectroscopic Studies of PHEV2 form-factor Lithium-ion Cells for Automotive Applications
JO  - Journal of Energy and Power Technology
SP  - 015
VL  - 04
IS  - 02
AB  - Prismatic PHEV2 form-factor lithium-ion cells with a nominal capacity of 25 Ah (as used for automotive applications) have been studied with electrochemical impedance spectroscopy (EIS). The data was evaluated using electrical equivalent circuits. Mathematical modeling, system identification, and the determination of model parameters of the lithium-ion cell were also carried out. While a study of the influence of temperature and state-of-charge (SOC) performed using pristine lithium-ion cells showed a nonlinear relationship between temperature and the fits for different RC elements. Finally, the interdependency of parameters determined by EIS has been demonstrated for cells in different aging regimes (cyclic vs. non-cyclic aging) relevant for automotive requirements use cases.
SN  - 2690-1692
UR  - https://doi.org/10.21926/jept.2202015
DO  - 10.21926/jept.2202015
ID  - Calles2022
ER  -