Ata-ur-Rehman, . and Ali, Ghulam and Bilal, Muhammad and Zahid, Muhammad and Bashir, Shahid and Kalam, Abul and Iqbal, Javed and Qayyum, Muhammad Abdul and Wageh, S. and Abbas, Syed Mustansar (2022) Transformation of diffusive to capacitive kinetics in nanoscale modified Co-TiO2@CNTs composites safeguarding steady reversible capacity as sodium-ion battery anode. Journal of Alloys and Compounds, 902. ISSN 0925-8388, DOI https://doi.org/10.1016/j.jallcom.2022.163772.
Full text not available from this repository.Abstract
The effective diffusion-controlled performance of the SIB anode, CoxTi1-xO2/CNTs, presented here offers high reversible sodium uptake. Kinetic studies of the samples conducted through cyclic voltammetry at various scan rates suggest that by increasing the mass ratio of Co atoms in TiO2 lattice the mechanism is shifted from a slow diffusive charge contribution to a fast capacitive charge contribution. Partial amorphization of the crystalline TiO2 diffraction planes revealed by ex-situ XRD along with the attenuation of the crystal lattice reflects the ability of the electrodes for high reversible sodium uptake. The synchronous effect of CNTs and Co loading enhance the porosity with multiple electronic/ionic conducting channels favouring high sodium storage and stability from 109.3 mAh g(-1) in TiO2 to 168.5 mAh g(-1) in Co0.03Ti0.97O2/CNT electrode after 80 cycles at a current rate of 0.05 C. (C) 2022 Published by Elsevier B.V.
| Item Type: | Article |
|---|---|
| Funders: | King Khalid University, through Research Center for Advanced Materials Science (RCAMS) [RCAMS/KKU//010/21] [KKU/RCAMS/010/21] |
| Uncontrolled Keywords: | TiO2; Sodium-ion battery; Carbon nanotubes; Diffusion coefficient; Pseudocapacitive |
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 11 Aug 2022 01:03 |
| Last Modified: | 11 Aug 2022 01:03 |
| URI: | http://eprints.um.edu.my/id/eprint/32723 |
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