Abstract
Jatropha oil-based polyurethane acylate gel polymer electrolyte was mixed with different concentrations of tetrabutylammonium iodide salt (TBAI). The temperature dependences of ionic conductivity, dielectric modulus and relaxation time were studied in the range of 298 to 393 K. The highest ionic conductivity of (1.88 ± 0.020) × 10–4 Scm−1 at 298 K was achieved when the gel contained 30 wt% of TBAI and 2.06 wt% of I2. Furthermore, the study found that conductivity-temperature dependence followed the Vogel-Tammann Fulcher equation. From that, it could be clearly observed that 30 wt% TBAI indicated the lowest activation energy of 6.947 kJ mol−1. By using the fitting method on the Nyquist plot, the number density, mobility and diffusion coefficient of the charge carrier were determined. The charge properties were analysed using the dielectric permittivity, modulus and dissipation factor. Apart from this, the stoke drag and capacitance were determined.
Highlights
Jatropha oil-based polyurethane acylate gel polymer electrolyte was mixed with different concentrations of tetrabutylammonium iodide salt (TBAI)
Jatropha oil based polyurethane acrylate (PUA) gel polymer electrolyte enhanced with TBAI-I2 showed promising results and that it was feasible to be used as an alternative green and sustainable electrolyte
The 30 wt% TBAI recorded the highest ionic conductivity at all temperatures tested, starting from room temperature of 298 K up to 393 K compared with the other ratios prepared in this work
Summary
Jatropha oil-based polyurethane acylate gel polymer electrolyte was mixed with different concentrations of tetrabutylammonium iodide salt (TBAI). It can operate at higher temperatures[13,14] as it does not face an issue with solvent evaporation such as occurs with a liquid electrolyte[15,16,17] It is flexible in nature which offers great mechanical properties over a solid e lectrolyte[13,14]. Due to the advantages mentioned above, jatropha oil-based PUA is used as the host polymer for preparing the gel polymer electrolyte This is because PUA has high cross-linking density, solvent resistance, good mechanical properties and excellent adhesion[20]. To gauge the feasibility of the Gel Polymer Electrolyte (GPE) for industrial usage, the above electrochemical properties can be measured at various temperatures
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