Evaluation on electrochemical properties of lithium-ion battery–based PMMA-PLA blend incorporation of [EDIMP] TFSI hybrid gel polymer electrolyte

N. F., Mazuki and Kufian, Mohd Zieauddin and Ahmad Salihin, Samsudin (2023) Evaluation on electrochemical properties of lithium-ion battery–based PMMA-PLA blend incorporation of [EDIMP] TFSI hybrid gel polymer electrolyte. Ionics. pp. 1-14. ISSN 1862-0760. (In Press / Online First) (In Press / Online First)

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Abstract

This study focuses on developing a novel hybrid gel polymer electrolyte (HGPE) for lithium-ion batteries. The HGPEs comprise a hybrid polymer of polymethyl methacrylate (PMMA) and polylactic acid (PLA), doped with 20 wt.% lithium bis (trifluoromethylsulfonyl) imide salt (LiTFSI) and incorporated with various contents of ionic liquid, namely ethyl-dimethyl-propylammonium bis(trifluoromethylsulfonyl)imide ([EDIMP]TFSI) is successfully prepared, and the lithium-ion batteries performance was investigated. This work aims to investigate the influence of the ionic liquid on the electrical properties, cation transference number (tLi+), electrochemical stability window, and charge-discharge performance of the PMMA-PLA based HGPE systems. Among the different samples tested, the HGPE containing 20 wt.% [EDIMP]TFSI (E-TFSI 20) exhibited the most promising results. It achieved an optimum ionic conductivity of 3.90 × 10−3 S cm−1, an increased tLi+ from 0.63 to 0.79, and an extended electrochemical stability window from 4.3 to 5V. Temperature dependence studies revealed that all the HGPE systems followed the Arrhenius characteristic, and their activation energies were calculated. Dielectric studies revealed ionic behavior and suitable capacitance with varying frequencies of the HGPEs system. The most favorable electrolyte was selected based on the highest ionic conductivity observed in each HGPE systems. It was utilized in a Li metalǀHGPEsǀgraphite cell configuration. The discharge capacity of the cells using LiTFSI 20 and E-TFSI 20 electrolytes were measured as 152.06 mAh g−1 and 71.15 mAh g−1, respectively, at a current density of 3.72 A g−1.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Ionic liquid; Lithium transference number; Potential stability; Hybrid polymer.
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
Faculty/Division: Faculty of Industrial Sciences And Technology
Institute of Postgraduate Studies
Depositing User: Dr. Ahmad Salihin Samsudin
Date Deposited: 28 Dec 2023 01:55
Last Modified: 28 Dec 2023 01:55
URI: http://umpir.ump.edu.my/id/eprint/39767
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