Fabrication and characterization of electrospun PVAM/TEOS based gel polymer electrolyte for Lithium-ion batteries
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Date
2020-08
Authors
Kassenova, N.
Kalybekkyzy, S.
Kahraman, M.V.
Bakenov, Zhumabay
Mentbayeva, Almagul
Kassenova
Journal Title
Journal ISSN
Volume Title
Publisher
The 8th International Conference on Nanomaterials and Advanced Energy Storage Systems; Nazarbayev University; National Laboratory Astana; Institute of Batteries
Abstract
Gel polymer electrolytes (GPEs) are promising components in lithium ion batteries (LIBs) because of
leak proof, longer shelf life and safety. GPE consists of a porous polymer host and liquid electrolyte saturated
within and combine the advantages of both the liquid and solid components [1].
In this study, a GPE based on poly(vinyl alcohol)/maleited PVA/tetraethyl orthosilicate (PVA/PVAMA/
TEOS) polymer fibers were prepared in different weight ratios. Crosslinked nanofibrous polymer
membrane for GPE was fabricated by UV-electrospinning method. Dual crosslink polymer membranes were
obtained after heat treatment of as-prepared polymer nanofibers, due to the condensation of hydrolyzed TEOS.
The morphology of the electrospun membranes was studied using scanning electron microscopy. Thermal
properties of the membranes were investigated using thermal gravimetric analysis. The membrane has good
porosity exhibits high uptake when activated with the liquid electrolyte of lithium salt in a mixture of organic
solvents and also shows high liquid retention properties. Electrochemical impedance spectroscopy and linear
sweep voltammetry was used to determine the conductivity and electrochemical stability of prepared GPEs.
Electrochemical performance of the polymer gel electrolyte is evaluated in Li/polymer electrolyte/LiFePO4
coin cell.
Description
Keywords
Research Subject Categories::TECHNOLOGY, gel polymer electrolytes, GPEs, lithium-ion batteries