Somesh, T. E. and Siddaramaiah and Demappa, T. (2022) Tailoring of ternary nanocomposite films of poly(vinyl alcohol)/ AgAlO2@reduced graphene oxide: An active material for flexible supercapacitors. Journal of Solid State Chemistry, 309. ISSN 1095-726X
Full text not available from this repository. (Request a copy)Abstract
Poly(vinyl alcohol) (PVA)/silver aluminium oxide (AgAlO2)@reduced graphene oxide (rGO) nanocomposites (NCs) as flexible supercapacitor electrodes were fabricated via an eco-friendly and scalable solution casting approach. The crystallinity and morphological characteristics of the developed NCs were characterized by using X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). The thermal properties were analysed by thermal gravimetric analysis (TGA). The electrochemical performance of PVA/AgAlO2@rGO NCs as a supercapacitor electrode material was investigated by cyclic voltammetry (CV) studies. PVA/AgAlO2@rGO NCs showed wide operating potential windows (1.2 V) which can greatly enhance their capacitive behaviour. The highest specific capacitance obtained was 273.4 F g-1 in the case of 2 wt % AgAlO2@rGO loaded PVA NC as compared to pristine PVA (6.04 F g-1). These NCs exhibited superior performance with the energy density (13.8 Whkg-1) and power density (150 W kg-1) at 0.5 A g-1 respectively. PVA/AgAlO2@rGO NCs exhibited the negligible equivalent series resistance and charge transfer resistance as an indication of excellent charge propagation at the interface between an electrolyte and an electrode. The NCs showed good capacity retention of 86.18% even after 1000 cycles. The NCs comprising of AgAlO2 NPs exhibited better specific capacitance than reduced graphene oxide incorporated PVA NCs, thus constituting a new approach for fabricating supercapacitors electrodes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Supercapacitor; Electrode; Metal oxide; Reduced graphene oxide; Specific capacitance; Nanocomposite |
| Subjects: | M Polymer Science > Polymer Science |
| Divisions: | PG Centre Mandya > Polymer Science |
| Depositing User: | C Swapna Library Assistant |
| Date Deposited: | 21 Jul 2023 04:43 |
| Last Modified: | 21 Jul 2023 04:43 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/17665 |
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