Fabrication and Testing Of PEDOT: PSS Wrapped WO 2 /Au Ternary Nanocomposite Electrodes for High Performance Flexible Supercapacitor Applications

• Published in: Journal of the Electrochemical Society 2021-04, Vol.168 (4), p.40526
• Main Authors: Badi, Nacer, Khasim, Syed, Alatawi, Ayshah S., Pasha, Apsar, Al-Ghamdi, Saleh Ahmad, Ignatiev, Alex
• Format: Article
• Language: English
• ISSN: 0013-4651; 1945-7111
• DOI: 10.1149/1945-7111/abf509

We report on a facile strategy towards fabrication and testing of tungsten oxide and gold nanoparticles decorated PEDOT-PSS ternary nanocomposite (PEDOT: PSS-WO 2 -Au) as a flexible electrode material for supercapacitor applications. The morphological and structural features of the bare PEDOT-PSS and PEDOT: PSS-WO 2 -Au ternary nanocomposites were analyzed through scanning electron microscopy and Fourier transforms infra-red spectroscopy, whereas the thermal stability of the samples was studied through theromogravimetric analysis. The presence of Au nanoparticles significantly enhances the room temperature conductivity from 3 S cm −1 for bare PEDOT-PSS to 1552 S cm −1 for the ternary composite. This ternary composite electrode displays superior electrochemical performance with a specific capacitance of 462 Fg −1 in comparison to 112 Fg −1 for bare PEDOT-PSS and 359.25 Fg −1 for PEDOT-PSS: WO 2 composite. The nanocomposite electrode displays capacitance retention of ∼92% after 5000 cycles of operation. The investigated ternary electrode shows excellent flexibility without capacitance fading under bending and rolling conditions.