Polymer gel electrolytes prepared from P(EG‐co‐PG) and their nanocomposites using organically modified montmorillonite

Abstract

Polymer gel electrolytes were prepared by thermal crosslinking reaction of a series of acrylic endcapped poly(ethylene glycol) and poly(propylene glycol) [P(EG-co-PG)] having various geometries and molecular weights. Acrylic end-capped prepolymers were prepared by the esterification of low molecular weight (M n : 1900 -5000) P(EG-co-PG) with acrylic acid. The linear increase in the ionic conductivity of polymer gel electrolyte films was observed with increasing temperature. The increase in the conductivity was also monitored by increasing the molecular weight of precursor polymer. Nanocomposite electrolytes were prepared by the addition of 5 wt % of organically modified layered silicate (montmorillonite) into the gel polymer electrolytes. The enhancement of the ionic conductivity as well as mechanical properties was observed in the nanocomposite systems.

Preparation and properties of biodegradable polymer-layered silicate nanocomposite electrolytes for zinc based batteries

“…The same group reported the effect of incorporation of OMMT clay on the electrical and electrochemical properties of nanocomposite gel polymer electrolytes based on poly(vinylidene fluoride) (PVdF) wherein a maximum conductivity value of 2.3 Â 10 À3 Scm À1 was reported for a 4 wt.% clay loading [14]. The enhancement of ionic conductivity as well as mechanical properties of gel polymer electrolytes with OMMT was reported by Jung et al [15]. In their report, nanocomposite gel polymer electrolytes were prepared by thermal crosslinking reaction of a series of acrylic endcapped poly(ethylene glycol) and poly (propylene glycol) with the addition of 5 wt % OMMT.…”

Physical and Electrochemical Properties of PVdF‐HFP/SiO2‐Based Polymer Electrolytes Prepared Using Dimethyl Acetamide Solvent and Water Non‐Solvent

“…Comprehensively optimizing all the properties measured, the phase inversion membrane electrolytes with 10-30 wt.-% SiO 2 were the best candidates for use as the polymer electrolyte of lithium rechargeable batteries. mixed with various fillers, such as nanosilicates, clay particles, [10][11][12] molecular sieves, [13] and ordered mesoporous silica particles. [14,15] The ionic conductivity at 40 8C of a poly(ethylene oxide)-based electrolyte system recently increased to %10 À5 S Á cm À1 by the addition of mesoporous silica.…”

Polyethylene Oxide-Based Gel Membrane Electrolytes for Lithium Batteries

“…First, a gel electrolyte may lack sufficient homogeneity and dimensional stability to prevent shorting between the electrodes. A polymer separator is often necessary to fabricate a cell (8,9). Second, the retention of solvent at elevated temperature is frequently very difficult because of the polymer matrix structure.…”