Nofal, Muaffaq M. and Hadi, Jihad M. and Aziz, Shujahadeen B. and Brza, Mohamad A. and Asnawi, Ahmad S. F. M. and Dannoun, Elham M. A. and Abdullah, Aziz M. and Kadir, Mohd F. Z. (2021) A study of methylcellulose-based polymer electrolyte impregnated with potassium ion-conducting carrier: Impedance, EEC modeling, FTIR, dielectric, and device characteristics. Materials, 14 (17). ISSN 1996-1944, DOI https://doi.org/10.3390/ma14174859.
Full text not available from this repository.Abstract
In this research, a biopolymer-based electrolyte system involving methylcellulose (MC) as a host polymeric material and potassium iodide (KI) salt as the ionic source was prepared by solution cast technique. The electrolyte with the highest conductivity was used for device application of electrochemical double-layer capacitor (EDLC) with high specific capacitance. The electrical, structural, and electrochemical characteristics of the electrolyte systems were investigated using various techniques. According to electrochemical impedance spectroscopy (EIS), the bulk resistance (R-b) decreased from 3.3 x 10(5) to 8 x 10(2) omega with the increase of salt concentration from 10 wt % to 40 wt % and the ionic conductivity was found to be 1.93 x10(-5) S/cm. The dielectric analysis further verified the conductivity trends. Low-frequency regions showed high dielectric constant, epsilon ` and loss, epsilon `' values. The polymer-salt complexation between (MC) and (KI) was shown through a Fourier transformed infrared spectroscopy (FTIR) studies. The analysis of transference number measurement (TNM) supported ions were predominantly responsible for the transport process in the MC-KI electrolyte. The highest conducting sample was observed to be electrochemically constant as the potential was swept linearly up to 1.8 V using linear sweep voltammetry (LSV). The cyclic voltammetry (CV) profile reveals the absence of a redox peak, indicating the presence of a charge double-layer between the surface of activated carbon electrodes and electrolytes. The maximum specific capacitance, C-s value was obtained as 118.4 F/g at the sweep rate of 10 mV/s.
| Item Type: | Article |
|---|---|
| Funders: | Prince Sultan University |
| Uncontrolled Keywords: | MC polymer electrolyte; Impedance study; Ion transport; FTIR analysis; TNM; LSV; CV analyses |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Centre for Foundation Studies in Science |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 18 Jul 2022 02:44 |
| Last Modified: | 18 Jul 2022 02:44 |
| URI: | http://eprints.um.edu.my/id/eprint/33897 |
Actions (login required)
 |
View Item |
