Lithium-ion batteries are one of the most preferred energy storage devices for today’s world due to their high capacity and power density. 18650-type cylindrical Lithium-ion batteries are commonly used in different application areas such as automotive and space industry for their stability, sustainability, and applicability. Thus, to investigate the battery's performance and develop its technology, analysing the electrochemical reactions that occurred inside the battery is crucial. Discharge tests, pulse tests, and Electrochemical Impedance Spectroscopy (EIS) are frequently used methods to understand the electrochemical performance of the batteries. The EIS measurements of fully charged batteries are conducted between 10 mHz and 200 kHz for a deep understanding of polarization processes. In this study, the electrochemical stabilities of cylindrical Sony Murata 18650-type Lithium-ion batteries in different ambient temperatures at various states of charge are analysed with two types of equivalent circuit modelling methods.
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Author Name: Ongun Bora Saban, Eda Güzel, Mustafa Fazıl Serincan, Mehmet Ali Arslan
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Keywords: Energy systems, Battery characterization Impedance, Electrochemistry
ISSN: 2547-975X
EISSN: 2547-975X
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