Vijayan, Bincy Lathakumary and Amina, Yasin and Izan Izwan, Misnon and Karuppiah, Chelladurai and Yang, Chun-Chen and Rajan, Jose (2023) Lithium-ion adsorption on surface modified porous carbon. Journal of Energy Storage, 71 (108221). pp. 1-10. ISSN 2352-152X. (Published)
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Abstract
Lithium-ion storage in porous carbon electrodes offers challenges due to poor electrode kinetics and limited storability. In this article, we demonstrate improved lithium-ion storage kinetics and rate capability in carbon electrode with appropriate surface or void modifications. The surface of porous carbon is modified by developing a thin film of either a metal oxide (Mn2O3) or a metal (cobalt) or the large voids in them are filled using hierarchical MnCo2O4 or TiO2 nanoflowers. Lithium-ion capacitors are fabricated in the Carbon//LiPF6//Li configuration and evaluated their lithium storage performance using cyclic voltammetry, galvanostatic charge discharge cycling, and electrochemical impedance spectroscopy. While the surface or void modification nominally increased the specific capacitance, the potential window and rate capability of the resulting devices remarkably increased. Among all the tested devices, the MnCo2O4 flowers filled electrode showed the largest capacitance and capacity retention, which are ascribed to its lower lithium transfer resistance.
| Item Type: | Article |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Electrochemical capacitors; High voltage capacitors; Materials sustainability; Porous carbon electrodes; Supercapacitors |
| Subjects: | H Social Sciences > HD Industries. Land use. Labor > HD28 Management. Industrial Management |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Centre for Advanced Intelligent Materials |
| Depositing User: | Miss Amelia Binti Hasan |
| Date Deposited: | 05 Jun 2024 08:56 |
| Last Modified: | 05 Jun 2024 08:56 |
| URI: | http://umpir.ump.edu.my/id/eprint/41470 |
| Download Statistic: | View Download Statistics |
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