Enhancing H+ conduction through glycolic acid-doped alginate-PVA based biopolymer electrolytes

N. M., Ghazali and Aoki, K. and Nagao, Y. and Ahmad Salihin, Samsudin (2024) Enhancing H+ conduction through glycolic acid-doped alginate-PVA based biopolymer electrolytes. International Journal of Hydrogen Energy, 89. pp. 177-189. ISSN 0360-3199. (Published)

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Abstract

This study investigates the development of a biopolymer blend electrolyte composed of alginate and poly (vinyl alcohol) (PVA), doped with glycolic acid (GA) to enhance H+ conductivity. The addition of GA significantly impacts the biopolymer blend's physicochemical properties and ionic conduction performance. Fourier transform infrared (FTIR) spectroscopy verified the intricate interactions and hydrogen bonding between the alginate-PVA matrix and GA. The addition of GA was shown to increase the amorphous phase, as observed through X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. This increase in the amorphous phase was found to enhance the thermal stability. Impedance analysis demonstrated a significant increase in ionic conductivity from approximately ∼10⁻⁸ S cm⁻1 for the undoped blend to 3.45 × 10⁻⁵ S cm⁻1 with 30 wt% GA (sample GA-30). The enhanced H+ conduction behaviour was consistent across various temperatures, adhering to the Arrhenius rule. These findings suggest that the alginate-PVA-GA system is a promising candidate for efficient proton transport applications.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Ionic conduction; Morphology; Polymer electrolyte; Proton (H+) carriers
Subjects:	T Technology > TP Chemical technology
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Mrs Norsaini Abdul Samat
Date Deposited:	20 Nov 2024 07:15
Last Modified:	20 Nov 2024 07:15
URI:	http://umpir.ump.edu.my/id/eprint/42954
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