Environmentally Benign Nanofiller-Aided Enhancement of the Electrochemical Performance of Flexible Lithium Polymer Composite

Flexible polymer electrolytes with efficient electrochemical characteristics were necessary to meet the requirements of smart electronics technology and foldable electronics. It is both important and difficult to design and construct a flexible lithium polymer electrolyte with higher ionic conductivity and better dielectric properties for use in electrochemical storage devices because of the need to increase storage capacity and electrochemical stability. This research describes the inclusion of Nickel oxide nanoparticles ( n -NiO), which are environmentally benign, doped lithium flexible polymer electrolytes ( n -FLPEs), via the solution-cast method with polymer matrices of poly (vinylidene fluoride-hexafluoropropylene) (PVdF-HFP), poly (ethylene oxide) (PEO), which is a biodegradable polymer, as well as Lithium trifluoromethanesulfonate (LiCF 3 SO 3 ). When n -NiO is incorporated into FLPEs, the ionic conductivity increases by a factor of nearly four and a half. The ε ʹ max value increased four times, and ε″ max value increased seventeen times owing to n -NiO inclusion. We used cyclic voltammetry (CV) and chronoamperometry (CA) to study the charge carrier buildup, ionic strength, and transference number in the optimal n -FLPE membrane. n -FLPEs have been shown to be electrochemically stable and capable of transporting ions due to chemical shifts in functional groups illustrated by X-ray photoelectron spectroscopy (XPS) investigations. The significance of the [υ s (SO 3 )] mode in ionic conductivity has been extensively addressed. We analysed the FESD's discharging behaviour at a 0.04 C assessment, or an average current during discharge of 5.128 mA over 25 h.