Abstract
In this study, we demonstrate a simple technique to prepare a flexible single-walled carbon nanotube (SWCNT) array for battery application. The polyvinyl alcohol-coated unidirectional SWCNT flexible film has been prepared using a simple solution casting technique. The frequency variation of impedance spectroscopy of the composite film is investigated in a frequency spectrum of 20 Hz ≤ f ≤ 1 MHz and temperature range (373 ≤ T ≤ 413 K). The experimental data are simulated with a generic battery model equivalent circuit. The generalized model is based on impedance spectroscopy, which is suitable for practical application and able to interpret the existing battery model. The extracted parameters from the simulation of experimental data are tabulated. The temperature variation of the parameters is very significant for manufacturing a battery system. The study of electric modulus suggests a non-Debye-type relaxation behavior of the flexible battery system.
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