Zheng, Sheng Qiang and Lim, Siew Shee and Foo, Chuan Yi and Haw, Choon Yian and Chiu, Wee Siong and Chia, Chin Hua and Khiew, Poi Sim (2023) Fabrication of sodium and MoS2 incorporated NiO and carbon nanostructures for advanced supercapacitor application. Journal of Energy Storage, 63. ISSN 2352-152X, DOI https://doi.org/10.1016/j.est.2023.106980.
Full text not available from this repository.Abstract
Transition metal oxides and carbonaceous nanocomposites have triggered enormous interest in the application of high-performance supercapacitors due to the outstanding electrical conductivity and superior theoretical capacitance. In this study, we prepared highly porous nanostructured NiO/C yolk-shell nanocomposites via a simple calcination of nickel-based metal-organic frameworks. The porosity and electrochemical property were further enhanced by incorporating sodium and hierarchical MoS2 nanostructures via a facile hydrothermal method. It was found that the as-synthesized Na-doped MoS2@NiO/C nanocomposites with hierarchical porosity exhibited superior electrochemical performance. Particularly, the delivered electrochemical capacitance of NiO/ C yolk-shell structure was 1779.50 F g-1 in an aqueous electrolyte (2 M KOH), and a superior specific capaci-tance of 2540.63 F g-1 was acquired after the incorporation of sodium and 2D layered MoS2 into the nano -composite. When a symmetrical supercapacitor was fabricated, a remarkable energy density of 36.93 Wh kg-1 was recorded in an environmental-friendly aqueous-based electrolyte. More significantly, the outstanding delivered capacitance retention and coulombic efficiency were 111.92 % and 97.6 %, respectively after 4000 continuous GCD cycles. Hence, the Na-doped MoS2@NiO/C with hierarchical porous nanostructures and extraordinary electrochemical performance was explicitly demonstrated in this study and can be utilized as electrode active materials in realizing high-performance supercapacitors.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia PRGS/1/2016/STG06/UM/02/1, FRGS/1/2019/STG02/UNIM/01/1 |
| Uncontrolled Keywords: | MOF-derived nanocomposites; Transition metal oxides; Carbonaceous nanostructures; Supercapacitors; MoS2 |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 13 May 2024 03:35 |
| Last Modified: | 13 May 2024 03:35 |
| URI: | http://eprints.um.edu.my/id/eprint/38452 |
Actions (login required)
 |
View Item |
