Aziz, Shujahadeen B. and Murad, Ary R. and Abdulwahid, Rebar T. and Aziz, Dara M. and Abdalrahman, Ari A. and Abdullah, Ranjdar M. and Kadir, M. F. Z. and Abdullah, Omed Gh. and Halim, Norhana Abdul and Hassan, Jamal (2024) Plasticised chitosan: Dextran polymer blend electrolyte for energy harvesting application: Tuning the ion transport and EDLC charge storage capacity through TiO2 dispersion. International Journal of Biological Macromolecules, 273 (2). p. 133203. ISSN 0141-8130, DOI https://doi.org/10.1016/j.ijbiomac.2024.133203.
Full text not available from this repository.Abstract
This study investigates the performance of biopolymer electrolytes based on chitosan and dextran for energy storage applications. The optimization of ion transport and performance of electric double-layer capacitors EDCL using these electrolytes, incorporating different concentrations of glycerol as a plasticizer and TiO2 as nanoparticles, is explored. Impedance measurements indicate a notable reduction in charge transfer resistance with the addition of TiO2. DC conductivity estimates from AC spectra plateau regions reach up to 5.6 x 10(-4) S/cm. The electric bulk resistance R-b obtained from the Nyquist plots exhibits a substantial decrease with increasing plasticizer concentration, further enhanced by the addition of the nanoparticles. Specifically, R-b decreases from similar to 20 k Omega to 287 Omega when glycerol concentration increases from 10 % to 40 % and further drops to 30 Omega with the introduction of TiO2. Specific capacitance obtained from cyclic voltammetry shows a notable increase as the scan rate decreases, indicating improved efficiency and stability of ion transport. The TiO2-enriched EDCL achieves 12.3 F/g specific capacitance at 20 mV/s scan rate, with high ion conductivity and extended electrochemical stability. These results suggest the great potential of plasticizer and TiO2 with biopolymers in improving the performance of energy storage systems.
| Item Type: | Article |
|---|---|
| Funders: | Khalifa University fund (CIRA-2020-051) |
| Uncontrolled Keywords: | Biopolymer; Glycerol plasticizer; TiO2 nanoparticle; Impedance spectroscopy; Energy storage device |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 16 Jan 2025 02:22 |
| Last Modified: | 16 Jan 2025 02:22 |
| URI: | http://eprints.um.edu.my/id/eprint/46879 |
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