Correlation studies between structural and ionic transport properties of lithium-ion gel polymer electrolytes based on guar gum

Aynharn, S. and Ahmad Faizrin, Ahmad Fuzlin and Ahmad Salihin, Samsudin (2025) Correlation studies between structural and ionic transport properties of lithium-ion gel polymer electrolytes based on guar gum. Ionics, 31. pp. 509-524. ISSN 1862-0760. (Published)

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DOI/Official URL: https://doi.org/10.1007/s11581-024-05976-6

Abstract

Novel gel polymer electrolytes (GPEs) based on guar gum and lithium bis(oxalate)borate (LiBOB) were developed via the dissolution method. Structural and ionic conductivity properties were investigated using Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), and electrochemical impedance spectroscopy (EIS). FTIR analysis revealed significant interactions between guar gum and LiBOB. DSC results indicated a decrease in both the glass transition temperature (Tg) and crystallization temperature (Tc) with increasing LiBOB content, reflecting enhanced amorphous phase formation. An optimum ionic conductivity of 7.89 × 10−4 S cm−1 at room temperature was achieved with 6 wt. % LiBOB. The temperature dependence of conductivity followed Arrhenius behavior, suggesting thermally activated ion transport. FTIR deconvolution established a correlation between the number density, mobility, and diffusion coefficient of mobile ions with ionic conductivity. These findings demonstrate the potential of guar gum–based GPEs for lithium-ion battery applications.

Item Type:	Article
Uncontrolled Keywords:	Biopolymer; Gel polymer electrolyte; Crystallization temperature; Li+ transportations
Subjects:	Q Science > Q Science (General) Q Science > QC Physics Q Science > QD Chemistry
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Dr. Ahmad Salihin Samsudin
Date Deposited:	06 Feb 2025 06:36
Last Modified:	06 Feb 2025 06:36
URI:	http://umpir.ump.edu.my/id/eprint/43755
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