Iqbal, Javed and Numan, Arshid and Ansari, Mohammad Omaish and Jafer, Rashida and Jagadish, Priyanka R. and Bashir, Shahid and Hasan, P. M. Z. and Bilgrami, Anwar L. and Mohamad, Sharifah and Ramesh, K. and Ramesh, S. (2020) Cobalt oxide nanograins and silver nanoparticles decorated fibrous polyaniline nanocomposite as battery-type electrode for high performance supercapattery. Polymers, 12 (12). ISSN 2073-4360, DOI https://doi.org/10.3390/polym12122816.
Full text not available from this repository.Abstract
In this study, silver (Ag) and cobalt oxide (Co3O4) decorated polyaniline (PANI) fibers were prepared by the combination of in-situ aniline oxidative polymerization and the hydrothermal methodology. The morphology of the prepared Ag/Co3O4@PANI ternary nanocomposite was studied by scanning electron microscopy and transmission electron microscopy, while the structural studies were carried out by X-ray diffraction and X-ray photoelectron spectroscopy. The morphological characterization revealed fibrous shaped PANI, coated with Ag and Co3O4 nanograins, while the structural studies revealed high purity, good crystallinity, and slight interactions among the constituents of the Ag/Co3O4@PANI ternary nanocomposite. The electrochemical performance studies revealed the enhanced performance of the Ag/Co3O4@PANI nanocomposite due to the synergistic/additional effect of Ag, Co3O4 and PANI compared to pure PANI and Co3O4@PANI. The addition of the Ag and Co3O4 provided an extended site for faradaic reactions leading to the high specific capacity. The Ag/Co3O4@PANI ternary nanocomposite exhibited an excellent specific capacity of 262.62 C g(-1) at a scan rate of 3 mV s(-1). The maximum energy and power density were found to be 14.01 Wh kg(-1) and 165.00 W kg(-1), respectively. The cyclic stability of supercapattery (Ag/Co3O4@PANI//activated carbon) consisting of a battery type electrode demonstrated a gradual increase in specific capacity with a continuous charge-discharge cycle until similar to 1000 cycles, then remained stable until 2500 cycles and later started decreasing, thereby showing the cyclic stability of 121.03% of its initial value after 3500 cycles.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Conducting polymer; Polyaniline; Cobalt oxide; Silver; Supercapattery; Energy storage device |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science Faculty of Science > Department of Chemistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Nov 2023 03:15 |
| Last Modified: | 29 Nov 2023 04:38 |
| URI: | http://eprints.um.edu.my/id/eprint/36214 |
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