Abubakar Gambo Muhammad, Sehrish Nazir, Neelam Rawat, Firdaus Mohamad Hamzah, Markus Diantoro, Ekaterina A. Arkhipova, Serguei V. Savilov, Anji Reddy Polu, Pramod K. Singh
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. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.
Center for Solar-Cells and Renewable Energy (CSRE), Department of Physics & Env Sci, SSES, Sharda University, Greater Noida, 201310, India; Department of Chemistry, DSB Campus, Kumaun University, Uttarakhand, Nainital, 263001, India; Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia, Kem Sungai Besi, Kuala Lumpur, 57000, Malaysia; Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Semarang 5, Malang, 65145, Indonesia; Department of Chemistry, Leninskiye Gory, Lomonosov Moscow State University, 1–3aq, Moscow, 119991, Russian Federation; Materials for Energy Devices Lab, Department of Physics, BVRIT HYDERABAD College of Engineering for Women, Telangana, Hyderabad, 500090, India
