Abstract
AbstractPolyvinyl alcohol‐based polymeric films with NaI and ionic liquid (1‐Butyl‐1‐methylpyrrolidinium hexafluorophosphate) have been developed by using the solution cast method. The produced polymer electrolyte sheets were evaluated using various methods. Electrochemical impedance spectroscopy was utilized to measure the conductivity of the polymeric films, and the ionic liquid doped films showed an increase with a maximum at 6 wt% ionic liquid with a value for conductivity of 4.545 × 10−4 S cm−1. The morphological features of the most conductive polymer were further investigated using polarized optical microscopy and x‐ray diffraction. Ionic doping causes an increase in the amorphous nature. Using Fourier transform infrared spectroscopy, an excellent complexity between PVA, salt NaI, and ionic liquid was assessed. Thermogravimetric analysis was used to inspect the polymer films' thermal stability. The highest conducting sample was used for manufacturing an electric double‐layer capacitor. The behavior of manufactured electric double‐layer capacitor has been evaluated through EIS, CV, and GCD.
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