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<p>Flexible solid polymer electrolyte (SPE) films with polyvinylideneflouride-co-hexafluoropropylene (PVdF-HFP) incorporating sodium thiocyanate (NaSCN) were prepared by the process of solution casting techniques. To improve ionic conductivity further, trihexyl(tetradecyl)phosphonium dicaynamide ([P<sub>666, 14</sub><sup>+</sup>][DCA¯]) ionic liquid (IL) was used as a dopant. Electrical, structural, electrochemical properties of these ionic liquid doped polymer electrolyte (ILDPE) were studied in detail. By doping IL, conductivity increases and attains maxima at 0.4 weight percent (wt%) of ionic liquid (IL) concentration with ionic conductivity value of 5.3 × 10<sup>−4</sup> Scm<sup>−1</sup>. Using maximum conducting ILDPE, sandwich structure supercapacitor (electric double-layer capacitor (EDLC)) has been developed at laboratory scale which shows reasonably good performance having specific capacitance of 57.8 Fg<sup>−1</sup> at 10 mVs<sup>−1</sup> using cyclic voltammetry and 38 Fg<sup>−1</sup> using galvanostatic charge–discharge analysis.</p> Graphical Abstract <p></p>

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Electrochemical application of poly(vinylidene fluoride-co-hexafluoropropylene) incorporated with trihexyl(tetradecyl)phosphonium dicyanamide and polyether-derived carbon

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Abubakar Gambo Muhammad,
  • Sehrish Nazir,
  • Neelam Rawat,
  • Firdaus Mohamad Hamzah,
  • Markus Diantoro,
  • Ekaterina A. Arkhipova,
  • Serguei V. Savilov,
  • Anji Reddy Polu,
  • Pramod K. Singh

摘要

Flexible solid polymer electrolyte (SPE) films with polyvinylideneflouride-co-hexafluoropropylene (PVdF-HFP) incorporating sodium thiocyanate (NaSCN) were prepared by the process of solution casting techniques. To improve ionic conductivity further, trihexyl(tetradecyl)phosphonium dicaynamide ([P666, 14+][DCA¯]) ionic liquid (IL) was used as a dopant. Electrical, structural, electrochemical properties of these ionic liquid doped polymer electrolyte (ILDPE) were studied in detail. By doping IL, conductivity increases and attains maxima at 0.4 weight percent (wt%) of ionic liquid (IL) concentration with ionic conductivity value of 5.3 × 10−4 Scm−1. Using maximum conducting ILDPE, sandwich structure supercapacitor (electric double-layer capacitor (EDLC)) has been developed at laboratory scale which shows reasonably good performance having specific capacitance of 57.8 Fg−1 at 10 mVs−1 using cyclic voltammetry and 38 Fg−1 using galvanostatic charge–discharge analysis.

Graphical Abstract