| Summary: | The goal of developing sustainable and environmentally friendly energy storage solutions can be explored by combining biopolymers with plasticizers. This is a crucial development in ensuring the desired electrical and structural properties in biopolymer electrolytes. In this current study, the plasticizer agarose/NaNO3 biopolymer electrolyte thin film has been carried out with the addition of glycerol as a plasticizer using a solution casting technique. The effect of the addition of glycerol on the electrical and structural properties of the plasticized biopolymer electrolyte thin film was performed using electrochemical impedance spectroscopy (EIS) and X-ray diffraction (XRD). The plasticized biopolymer electrolyte thin film with 20wt.% of glycerol had the highest amorphous region, resulting in the highest ionic conductivity of 4.32×10-4 S cm-1. These results were confirmed by XRD and EIS analysis. The plasticizer agarose/NaNO3-glycerol biopolymer electrolyte could be used in sodium-ion batteries. © 2024, Malaysian Society of Analytical Sciences. All rights reserved.
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