Characterization of an amorphous materials hybrid polymer electrolyte based on a LiNO3-doped, CMC-PVA blend for application in an electrical double layer capacitor

Zulkifli, Aimi Mahirah and Mohd. Ali, Noor Saadiah and Mazuki, Norfatihah F. and Samsudin, Ahmad Salihin (2020) Characterization of an amorphous materials hybrid polymer electrolyte based on a LiNO3-doped, CMC-PVA blend for application in an electrical double layer capacitor. Materials Chemistry and Physics, 253. pp. 1-15. ISSN 0254-0584

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Abstract

In the present work, hybrid polymer electrolytes consisting of a CMC-PVA blend doped with various amounts of LiNO3 was produced using the casting technique. The structural and ionic conductivity of the prepared samples were studied by using Fourier transform infrared (FTIR) spectroscopy, x-ray diffraction (XRD), scanning electron microscopy (SEM) and electrical impedance spectroscopy (EIS) analyses. The optimum ionic conductivity at room temperature was achieved at 3.54 × 10−3 S cm−1 with the addition of 20 wt % of LiNO3 which showed the lowest percentage of crystallinity. IR-deconvolution revealed that the ionic conductivity is dependent on the ionic mobility and diffusion coefficient. Linear sweep voltammetry was performed where the highest ionic conducting sample is electrochemically stable up to 1.43 V. The highest conducting sample was fabricated into an electrical double layer capacitor (EDLC) and was characterized by using cyclic voltammetry and galvanostatic charge-discharge (GCD) for their electrochemical stability performance. The GCD profile showed that the fabricated EDLC is stable to operate up to the 5000th cycles with the average specific capacitance of ~100 F/g.

Item Type:	Article (Journal)
Additional Information:	5858/88350
Uncontrolled Keywords:	Polymer electrolytes; CMC-PVA hybrid; Li+; Electrochemical devices
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:	16 Feb 2021 10:43
Last Modified:	16 Feb 2021 10:43
URI:	http://irep.iium.edu.my/id/eprint/88350

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