Enhancing electrochemical performance of alginate–PVA solid blend electrolytes via H+ ion doping for supercapacitor applications

N. M., Ghazali and N. F., Mazuki and Mohd Herwan, Sulaiman and Aoki, K. and Nagao, Y. and Ahmad Salihin, Samsudin (2024) Enhancing electrochemical performance of alginate–PVA solid blend electrolytes via H+ ion doping for supercapacitor applications. Solid State Ionics, 414 (116650). pp. 1-15. ISSN 0167-2738. (Published)

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DOI/Official URL: https://doi.org/10.1016/j.ssi.2024.116650

Abstract

This study investigates the enhancement of electrochemical performance in alginate–polyvinyl alcohol (PVA) solid blend electrolytes through H+ ion doping for supercapacitor applications. Employing the solution casting method, we tailored electrolyte systems doped with nitric acid (HNO3). Impedance studies reveal a substantial increase in ionic conductivity (2.71 × 10−4 S cm−1 at room temperature) with 3 M HNO3 doping. Fourier-transform infrared spectroscopy and transference number measurements confirm the effective protonation of the polymer matrix. Temperature-dependent behavior analysis demonstrates robust performance across various thermal conditions. Linear sweep voltammetry studies showcase excellent electrochemical stability, while galvanostatic charge-discharge profiles exhibit reliable cyclic performance, with an average specific capacitance of approximately 6.76 F/g. This research underscores the potential of tailored solid blend electrolytes doped with H+ ions to elevate supercapacitor technology.

Item Type:	Article
Uncontrolled Keywords:	Polymer blend; Grotthus mechanism; Electrochemical properties; H+ carriers-based supercapacitors
Subjects:	Q Science > Q Science (General) T Technology > TP Chemical technology
Faculty/Division:	Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies Faculty of Electrical and Electronic Engineering Technology
Depositing User:	Mrs Norsaini Abdul Samat
Date Deposited:	15 Aug 2024 08:36
Last Modified:	15 Aug 2024 08:36
URI:	http://umpir.ump.edu.my/id/eprint/42374
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