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Dataset on Broadband Electrochemical Impedance Spectroscopy of Lithium-Ion Batteries for Different Values of the State-of-Charge
AbstractThis dataset consists of electrochemical impedance spectroscopy measurements on commonly-used batteries, namely Samsung ICR18650-26J cylindrical Lithium-Ion cells. The complex impedance of the batteries was measured at a set of fourteen different frequencies from 0.05 Hz to 1000 Hz, using a random-phase multi-sine excitation signal. For each excited frequency, the current amplitude was 50 mA, resulting in a measurement uncertainty of approximately 0.1 mΩ. Six measurement repetitions are provided at ten different states-of-charge of four different brand-new batteries. Repeated EIS measurement results were obtained, for each individual battery cell, from six separate discharge cycles. All measurements were performed with the battery placed in a temperature-controlled chamber at 25 ± 1 °C. Batteries were allowed to thermalize before each measurement. Keywords:Battery electrochemical impedance spectroscopy; Lithium-ion batteries; State of charge (SoC) estimation; Broadband electrochemical impedance spectroscopy; Multisine excitation |
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