Iqbal, Javed and Numan, Arshid and Ansari, Mohammad Omaish and Jagadish, Priyanka R. and Jafer, Rashida and Bashir, Shahid and Mohamad, Sharifah and Ramesh, K. and Ramesh, S. (2020) Facile synthesis of ternary nanocomposite of polypyrrole incorporated with cobalt oxide and silver nanoparticles for high performance supercapattery. Electrochimica Acta, 348. ISSN 0013-4686, DOI https://doi.org/10.1016/j.electacta.2020.136313.
Full text not available from this repository.Abstract
Ternary nanocomposites of polypyrrole (PPy) incorporated with cobalt oxide nanograin (Co3O4), and silver (Ag) nanoparticles were synthesized by hydrothermal methodology and further utilized in supercapattery as a positive electrode material. The synthesized ternary nanocomposites (Ag/Co3O4@PPy), as well as their counterparts (Co3O4@PPy and PPy), were analyzed by various analytical techniques such as field emission scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The electrochemical characterizations such as cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy studies were performed using standard three electrodes cell system in potassium hydroxide (1 M KOH) electrolyte to evaluate the best performing electrode material. Electrochemical studies revealed that the ternary nanocomposites provided much higher specific capacity, low charge transfer and Warburg resistance compared to Co3O4@PPy and pure PPy. The best performing nanocomposite, (Ag/Co3O4@PPy) was used as a positive electrode material for the fabrication of supercapattery which delivered the highest energy density of 24.79 Wh kg(-1) and a corresponding power density of 554.40 W kg(-1) at a current density of 0.7 A g(-1). Moreover, the supercapattery of ternary nanocomposites showed 153.67% of capacity retention even after 3000 cycles. Hence, the synthesized ternary nanocomposites have significant potential to be used in highly stable supercapattery. (C) 2020 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | Collaborative Research in Engineering, Science and Technology Centre [Grant No: PV027-2018], National Natural Science Foundation of China [Grant No: 61774046], Ministry of Higher Education, Malaysia [Grant No: FP062- 2018A, IIRG007A-19IISS], Fudan University |
| Uncontrolled Keywords: | Ternary nanocomposites; Supercapattery; Cobalt oxide; Polypyrrole; Silver; Hydrothermal |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Oct 2024 08:28 |
| Last Modified: | 29 Oct 2024 08:28 |
| URI: | http://eprints.um.edu.my/id/eprint/36552 |
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