Electrical conductivity studies on PVA/PVP-KOH alkaline solid polymer blend electrolyte

Abstract

Abstract.A series of conducting thin-film solid electrolytes based on poly (vinyl alcohol)/poly (vinyl pyrrolidone) (PVA/PVP) polymer blend was prepared by the solution casting technique. PVA and PVP were mixed in various weight percent ratios and dissolved in 20 ml of distilled water. The samples were analyzed by using impedance spectroscopy in the frequency range between 100 Hz and 1 MHz. The PVA/PVP system with a composition of 80% PVA and 20 wt.% PVP exhibits the highest conductivity of (2.2 + 1.4) x 10 .7 gem 1. The highest conducting PVA/PVP blend was then further studied by adding different amounts of potassium hydroxide (KOH) ionic dopant. Water has been used as solvent to prepare PVA/PVP-KOH based alkaline solid polymer blend electrolyte films. The conductivity was enhanced to (1.5 + 1.1) x 10 4 acre-1 when 40 wt.% KOH was added.

Structural, optical, thermal and electrical studies on PVA/PVP blends filled with lithium bromide

“…From Fig. 7, it is clear that, the conductivity of pure PVA/PVP blend was 1.00617 Â 10 À10 S cm À1 (at room temperature) and its value increased about 200 times on the filled films and these results data in the same range of Hatta et al results [25]. The rise of the conductivity is significant with increased concentration of LiBr.…”

Free volume-related microstructural properties of lithium perchlorate/sodium alginate polymer composites

“…Mainly electrical conduction in polymers has been studied aiming to understand the nature of the charge transport prevalent in these materials. Most of the studies in this field are devoted to poly(ethylene oxide) and poly(propylene oxide) (PPO)‐based polymer electrolytes using alkali metal salts .…”

Multifunctional e-spun colloidal nanofiber structures from various dispersed blends of PVA/ODA-MMT with PVP/ODA-MMT, poly(VP-alt-MA) and AgNPs incorporated polymer complexes as electro-active platforms

“…Hatta et al [21] observed that solvent casting PVA/PVP thin-film solid electrolytes with a composition of 80% of PVA and 20% of PVP (v/v) exhibited the highest conductivity (2.2·10 -7 S·cm -1 ). The conductivity of this system enhanced to 1.5·10 -4 S·cm -1 when KOH (40%) was added.…”