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The effect of [EMIm]BF4/Li+ Ionic liquid on PEO-based solid polymer electrolyte membranes characteristics as lithium-ion batteries separator

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Title The effect of [EMIm]BF4/Li+ Ionic liquid on PEO-based solid polymer electrolyte membranes characteristics as lithium-ion batteries separator
 
Creator Ndruru, Sun Theo Constan Lotebulo
Bundjali, Bunbun
Wahyuningrum, Deana
 
Subject Electrochemical Impedance Spectroscopy (EIS)
Ionic liquid, Lithium-Ion batteries (LIB)
MAOS method
Solid polymer electrolytes
 
Description 271-282
Lithium-ion batteries have liquid electrolytes, which are corrosive and volatile, that would cause leakage and explosion
during the rechargeable process at high temperatures. To overcome this problem, it is necessary to change the liquid
electrolyte into a solid one, namely a solid polymer electrolyte. This work has prepared the solidpolymer electrolyte
membranes by casting various 1-ethyl-3-tetrafluoroborate, [EMIm]BF4/Li+ ionic liquid, and PEO. In this study,
[EMIm]BF4/Li+, a Li+ ion-attached ionic liquid, has been synthesized using a simple metathesis reaction between 1-ethyl-3-
methylimidazolium-bromide, [EMIm]Br, and lithium tetrafluoroborate, LiBF4 salt. [EMIm]Br has been synthesized from 1-
methylimidazole and bromoethane precursors using Microwave Assisted Organic Synthesis (MAOS) method. The
functional groups and structures of [EMIm]Br and [EMIm]BF4/Li+ have been confirmed by Fourier Transform Infrared
(FTIR) and Nuclear Magnetic Resonance (NMR) spectra analysis. The analysis of ionic conductivities, crystallinities,
mechanical properties, surface morphologies, and thermal stabilities have been confirmed by using Electrochemical
Impedance Spectroscopy (EIS), X-ray Diffraction (XRD), and tensile tester, Scanning Electron Microscopy (SEM), and
Thermogravimetry Analysis (TGA), respectively. The highest ionic conductivity is 1.83 x 10-3 S.cm-1 at room temperature
for polymer electrolyte membrane with 16% weight of the [EMIm]BF4/Li+ ionic liquid and also exhibits good mechanical
flexibility and thermal stability.
 
Date 2022-05-19T05:52:12Z
2022-05-19T05:52:12Z
2022-04
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscair.res.in/handle/123456789/59738
 
Language en
 
Publisher CSIR-NIScPR, India
 
Source IJEMS Vol.29(2) [April 2022]