Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

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P.K Singh


Ostatnie publikacje
1.  Nazir S., Singh P., Jain A., Michalska M., Yahya M., Yusuf S., Diantoro M., Latif F., Singh M., Polyether-Derived Carbon Material and Ionic Liquid (Tributylmethylphosphonium iodide) Incorporated Poly(Vinylidene Fluoride-co-Hexafluoropropylene)-Based Polymer Electrolyte for Supercapacitor Application, Journal of Energy Storage, ISSN: 2352-152X, DOI: 10.1002/est2.70083, Vol.6, No.8, pp.1-15, 2024

Streszczenie:
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP)-sodium thiocyanate (NaSCN) solid polymer electrolytes containing different weight ratios of ionic liquid (IL)—tributylmethylphosphonium iodide (TBMPI) were prepared using solution-cast approach. Electrochemical impedance data indicates that increasing ionic liquid into polymer electrolyte matrix increases ionic conductivity and the maximum value of ionic conductivity was obtained at 150 wt% TBMPI, having conductivity value of 8.3 × 10−5 S cm−1. The dielectric measurement supports our conductivity data. Ionic transference number measurement affirms this system to be predominantly ionic in nature, while electrochemical stability window (ESW) was found to be 3.4 V. Polarized optical microscopy (POM) along with differential scanning calorimetry (DSC) suggest suitability of TBMPI as plasticizer, while infrared spectroscopy (FTIR) confirms ion interaction, complexation, and composite nature. The thermogravimetric analysis (TGA) shows thermal stability of these ionic liquid-doped polymer electrolytes (ILDPEs). Using maximum conducting ILDPE, a sandwiched supercapacitor has been fabricated which shows stable performance as high as 228 Fg−1 using cyclic voltammetry (CV).

Słowa kluczowe:
capacitance, ionic conductivity, ionic liquid (IL), solid polymer electrolyte (SPE), supercapacitor (SC)

Afiliacje autorów:
Nazir S. - inna afiliacja
Singh P. - inna afiliacja
Jain A. - IPPT PAN
Michalska M. - Łukasiewicz Research Network‒Institute of Electronic Materials Technology (PL)
Yahya M. - inna afiliacja
Yusuf S. - inna afiliacja
Diantoro M. - inna afiliacja
Latif F. - inna afiliacja
Singh M. - inna afiliacja
100p.
2.  Rawat S., Singh P., Jain A., Song S., Yahya M., Savilov S., Diantoro M., Michalska M., Polu A., Singh R., Ionic liquid (1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate) doped polyethylene polymer electrolyte for energy devices, Journal of Materials Science: Materials in Electronics, ISSN: 0957-4522, DOI: 10.1007/s10854-024-13397-4, Vol.35, No.1643, pp.1-10, 2024

Streszczenie:
This paper provides a comprehensive overview of the influence of 1-Butyl-1-Methylpyrrolidinium Trifluoromethanesulfonate (BMPyrrOTf)-ionic liquid on a new polymer electrolyte where Polyethylene oxide (PEO) as host and ammonium iodide (NH4I) as salt. These IL-doped solid polymer electrolyte were prepared using solution cast technique. Various characterisation techniques have been utilized to evaluate the qualitative and quantitative estimation of polymer electrolyte like Polarized microscopy (POM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Linear sweep voltammetry (LSV), Ionic transference no. (tion) and Impedance spectroscopy. Doping IL increases conductivity and highest achieve at 8 wt% of BMPyrrOTF with conductivity value reaches upto 4.15 × 10–5 S/cm at. Using Wagner’s polarization method, Ionic transference measurement support ionic conduction while stable potential window has further affirmed good electrochemical stability of films. The highest conducting IL-enriched polymer electrolyte sandwiched low-cost dye-sensitized solar cells (DSSCs) and electric double layer capacitors (EDLCs) have been developed, and their performance is conveniently appropriate.

Afiliacje autorów:
Rawat S. - inna afiliacja
Singh P. - inna afiliacja
Jain A. - IPPT PAN
Song S. - inna afiliacja
Yahya M. - inna afiliacja
Savilov S. - inna afiliacja
Diantoro M. - inna afiliacja
Michalska M. - Łukasiewicz Research Network‒Institute of Electronic Materials Technology (PL)
Polu A. - inna afiliacja
Singh R. - inna afiliacja
70p.

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