Investigation on Electrochemical Performance of New Flexible Nanocomposite Poly(Vinylidene Fluoride-co-Hexafluoropropylene) Polymer Electrolytes

Abstract

This research paper as an article investigates electrochemical performance of poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-co-HFP) flexible nanocomposite polymer electrolytes which have been prepared successfully with incorporation of zinc oxide (ZnO) nanofiller. First, nanofillers are incorporated in a polymer matrix to form the flexible nanocomposite PVdF-co-HFP polymer membranes (PI-CMPM), and it is obtained by phase inversion technique. Contact angles of PI-CMPM have achieved a maximum of 136°. After this procedure, it has been activated by using a 1.0 M LiClO4 containing of DMC/EC (1 : 1 v/v ratio) electrolyte solution to get flexible nanocomposite polymer electrolytes (PI-CMPE). The optimized PI-CMPM has increased the electrolyte uptake by 150%. It reaches the maximum ionic conductivity value of 2.47×10−3 S cm−1 at room temperature. Optimized PI-CMPE achieved a maximum transference number of 0.61, which may be further evidence for the ability to fabricate high-performance lithium ion polymer batteries.

Physical and Charge-Discharge behavior of Facile PVdF-co-HFP Nanocomposite Polymer Electrolyte for Lithium Ion Polymer Batteries

“…According to our former work [12], the nanoCMPE with optimized filler content has found that the electrolyte has achieved such as Li + Fig. 2(a-b) shows the surface morphologies of the optimized samples of PVdF-co-HFP based nanoCMPE with 6wt% ZnO filler as dispersoids.…”

“…Addition of filler content increased the porosity >6wt% of ZnO, beyond this filler content, porosity was abruptly decreased due to the aggregation of filler on the polymer matrix. The optimized (6wt%) filler dispersed composite microporous polymer membrane was found to have a high degree of porosity (76%) and more solution uptake (210%) [12] than 8-10wt% filler concentration (Table .1). Pore size and its distribution were the vital factors for solution uptake.…”

“…Fig. 6 shows the schematic representation of nanocomposite microporous polymer electrolyte role in lithium ion polymer battery [12]. The assembled cell is subjected to preconditioning with the cut-off voltage of 4.2V for the upper limit and 3.0V for the lower limit at 0.5C rate.…”

“…Conventional liquid electrolyte has many demerits such as leakage, electrochemical instability [6] and short circuit etc. Therefore, variety of polymer electrolytes has been employed such as poly(vinylidene fluoride) PVdF [7], poly(methacrylate) PMMA [8], Polyethylene oxide PEO [9], poly (vinylidenefluoride-co-hexafluoro propylene) (PVdF-co-HFP) [10][11][12], polyacrylonitrile (PAN) [13], poly(acrylonitrilemethacrylate) P(AN-MMA) [14] matrix. Among the various available polymer matrices, the copolymer of poly (vinylidenefluoride-co-hexafluoro propylene) (PVdFco-HFP) matrix has received prime significance in RLIB's [15][16][17].…”