Ionic Conductivity of PVDF-HFP/MG49 Based Solid Polymer Electrolyte

Abstract

Blend-based polymer electrolytes composed of PVDF-HFP/MG-49 (70/30) and LiClO4 as lithium salt has been studied. Solution casting method was applied to prepare the polymer electrolyte. Electrochemical impedance spectroscopy (EIS) and Fourier transform infrared spectroscopy (FTIR) were used to characterize the electrolyte films. The maximum value of 2.51×10ˉ6 S cm-1 was obtained at ambient temperature for the 30 wt. % of LiClO4 and the conductivity increased to 1.10×10ˉ3 S cm-1 by increasing the temperature up to 383 K. FTIR spectra demonstrated that complexation occurred between the polymers and lithium salt.

Ionic conductivity and transport properties of poly(vinylidene fluoride-co-hexafluoropropylene)-based solid polymer electrolytes

“…This result shows consistency with the theory established by M. Armand in 1978 [3] and other earlier reports on conductivity property of various polymer electrolytes [14,30,[33][34][35][36]. The observed increase in conductivity could be due to increased segmental motion of the polymer chains and mobility of ions, which may be explained with the help of the free volume theory in polymers [37,38].…”

Cross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanol

“…FTIR analysis was conducted for PVDF-HFP and PVDF-HFP/CB in the conditions to evaluate the effects of IR-treatment and addition of DEC to the film. Peaks reported in this section with suggested structural features noted in parenthesis (suggested features are within 1 or 2 cm −1 of peaks reported elsewhere for PVDF or PVDF-HFP [39,40,41,42,43,44,45,46,47,48,49,50,51,52]). …”

Poly(vinylidene fluoride) and copolymers as porous membranes for tissue engineering applications

“…Finally, P(VDF-HFP) membrane also presents preferentially the vibration band at 840 cm À1 , characteristic of the b-phase (~90%) [40].…”