Investigation on favourable ionic conduction based on CMC-K carrageenan proton conducting hybrid solid bio-polymer electrolytes for applications in EDLC

Zainuddin, N. K. and Rasali, N. M.J. and Mazuki, Norfatihah F. and Mohd. Ali, Noor Saadiah and Samsudin, Ahmad Salihin (2020) Investigation on favourable ionic conduction based on CMC-K carrageenan proton conducting hybrid solid bio-polymer electrolytes for applications in EDLC. International Journal of Hydrogen Energy, 45 (15). pp. 8727-8741. ISSN 0360-3199

	PDF - Published Version Restricted to Repository staff only Download (3MB) | Request a copy
	PDF (SCOPUS) - Supplemental Material Restricted to Registered users only Download (439kB) | Request a copy

Abstract

In the present work, a proton-conducting hybrid solid biopolymer electrolytes (HSBEs) system was successfully prepared via the solution casting approached. The HSBEs comprised of CMC blended with kappa carrageenan and doped with NH4NO3. The HSBEs system was characterized to evaluate the structural and the proton conduction properties using FTIR, XRD and EIS techniques. The FTIR analysis showed that a complexation occurred between the CMC-KC and H+ moiety of the NH4NO3 via the –OH, C–O–C as well as –COO- groups with associated changes observed to their wavenumbers and peak intensities. At the 80:20 ratio of the CMC:KC hybrid system, the optimum value of the ionic conductivity was found to be ~10−7 S/cm. However, the addition of 30 wt % of NH4NO3 to the system markedly increased the ionic conductivity to ~10−4 S/cm due to the increase in the amorphous phase in the HSBEs system as revealed by the XRD analysis. Meanwhile, the IR-deconvolution approach revealed an increase of the protonation (H+) from NH4NO3 towards the co-ordinating site on the hybrid CMC-KC system and this in turn, led to the increment in the ionic mobility and diffusion of ions for transportation. An EDLC was fabricated using the highest conducting HSBEs sample developed in the present study and it exhibited favourable characteristics as a capacitor with a reasonably good stability with regards to its electrochemical properties.

Item Type:	Article (Journal)
Additional Information:	5858/88344
Uncontrolled Keywords:	Hybrid polymer, Hþ carrier, Ionic conductivity, Electrochemical properties
Subjects:	Q Science > QC Physics Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Centre for Foundation Studies
Depositing User:	Dr. Noor Saadiah Mohd Ali
Date Deposited:	17 Feb 2021 10:54
Last Modified:	17 Feb 2021 10:54
URI:	http://irep.iium.edu.my/id/eprint/88344

Actions (login required)

View Item