Ansari, Akhalakur Rahman and Ansari, Sajid Ali and Parveen, Nazish and Ansari, Mohammad Omaish and Osman, Zurina (2023) Ag nanoparticles anchored reduced graphene oxide sheets@nickel oxide nanoflakes nanocomposites for enhanced capacitive performance of supercapacitors. Inorganic Chemistry Communications, 150. ISSN 1387-7003, DOI https://doi.org/10.1016/j.inoche.2023.110519.
Full text not available from this repository.Abstract
In this work, ternary nanocomposite of silver nanoparticles embedded on the surface of few layered reduced graphene oxide coated nickel oxide (Ag-rGO@NiO) was successfully fabricated as electrode material for high performance supercapacitor applications. NiO nanoflakes was prepared by hydrothermal route while coating of few layered rGO and subsequent silver anchoring was done by chemical methodology. The morphological analysis by scanning electron microscopy and transmission electron microscopy showed NiO nanoflakes coated by rGO/distributed on rGO substrate with scattered Ag nanoparticles. The elemental composition and distribution was confirmed by energy-dispersive X-ray (EDX) and Raman spectroscopy. The electrochemical measurements showed that the fabricated electrode of Ag-rGO@NiO is suitable electrode material and can enhance the capacitive performance of supercapacitors due to its high capacitive value (1230 Fg- 1) in contrast to the binary rGO@NiO (337.5 F g-1) and bare NiO flakes (145 F g-1) at current density of 1 A g-1. The enhancement in the capacitive value of Ag-rGO@NiO composite was mainly attributed to the highly conductive rGO sheets and Ag nanoparticles where rGO sheets provided conductive path and Ag created new channels for the electron transfer. Furthermore, it also showed excellent cyclic stability as it retained 88.5 % of its initial capacitive value even after 3000 cycles as well as showed excellent energy density of (27.33 Wh kg- 1) at power density (200.073 W kg- 1).
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Nickel oxide nanoflakes; Reduced graphene oxide; Silver nanoparticles; Supercapacitors |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 07 Jul 2023 03:18 |
| Last Modified: | 07 Jul 2023 03:18 |
| URI: | http://eprints.um.edu.my/id/eprint/38600 |
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