Ionic liquid dispersed highly conducting polymer electrolyte for supercapacitor application: Current scenario and prospects “ICSEM 2021”

Abstract

Ionic liquid (IL) is now being considered as a novel contender in the development of highly conducting polymer electrolytes rather than a solvent. It has a significant impact on the electrochemical performance of polymer electrolytes. This study emphasizes the significance of low viscosity IL dispersion within a polymer (PVA) matrix. The electrical, structural and photoelectrochemical properties of the IL-doped polymer electrolyte are discussed in detail. These highly conducting IL doped solid polymer electrolytes show promise towards the development of highly efficient Supercapacitors.

Supercapacitor using polyvinyl alcohol doped ionic liquid 1‐butyl‐1‐methylpyrrolidinium hexafluorophosphate polymer electrolyte system

“…In both cases doping IL in PE is a favorable condition for enhancement of ionic conductivity. However, a decrease of conductivity after a certain composition of IL is observed by the ion pairing phenomenon and it is already cited in the literature 16‐18 …”

“…Porous carbon layer‐based EDLC electrodes are prepared by coating technique 15,16 . Graphite sheets are used as current collectors for EDLC by cutting into an area of 1 × 1 cm sq.…”

“…Porous carbon layer-based EDLC electrodes are prepared by coating technique. 15,16 Graphite sheets are used as current collectors for EDLC by cutting into an area of 1 Â 1 cm sq. After that, a slurry or a homogeneous mixture of Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and porous carbon is produced by adding 10% of PVDF-HFP.…”

“…However, a decrease of conductivity after a certain composition of IL is observed by the ion pairing phenomenon and it is already cited in the literature. [16][17][18]…”

Polyvinyl alcohol/ammonium iodide/ionic liquid‐4‐ethyl‐4‐methylmorpholiniumbromide based polymer electrolytes and its application in electric double layer capacitor

“…Ionic liquid is solely composed of charge carriers and act as a plasticizer hence, it is helpful in enhancing conductivity by increasing n and μ both in the system. However, a decrease of conductivity after a certain composition of ionic liquid is observed by the ion pairing phenomenon and it is already cited in the literature 2,6 …”