| Autor: |
Humayun H; National Centre of Excellence in Physical Chemistry 1, University of Peshawar, Peshawar 25120, Pakistan., Begum B; National Centre of Excellence in Physical Chemistry 1, University of Peshawar, Peshawar 25120, Pakistan., Bilal S; National Centre of Excellence in Physical Chemistry 1, University of Peshawar, Peshawar 25120, Pakistan., Shah AUHA; Institute of Chemical Science, University of Peshawar, Peshawar 25120, Pakistan., Röse P; Institute for Applied Materials-Electrochemical Technologies, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany. |
| Jazyk: |
angličtina |
| Zdroj: |
Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2023 Feb 03; Vol. 13 (3). Date of Electronic Publication: 2023 Feb 03. |
| DOI: |
10.3390/nano13030618 |
| Abstrakt: |
Conducting polymers integrated with metal oxides create opportunities for hybrid capacitive electrodes. In this work, we report a one-pot oxidative polymerization for the synthesis of integrated conductive polyindole/nickel oxide (PIn/NiO), polyindole/zinc oxide (PIn/ZnO), and polyindole/nickel oxide/zinc oxide (PNZ). The polymers were analyzed thoroughly for their composition and physical as well as chemical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), and thermogravimetric analysis (TGA). The PIn and its composites were processed into electrodes, and their use in symmetrical supercapacitors in two- and three-electrode setups was evaluated by cyclic voltammetry (CV), galvanostatic discharge (GCD), and electrochemical impedance spectroscopy (EIS). The best electrochemical charge storage capability was found for the ternary PNZ composite. The high performance directly correlates with its uniformly shaped nanofibrous structure and high crystallinity. For instance, the symmetrical supercapacitor fabricated with PNZ hybrid electrodes shows a high specific capacitance of 310.9 F g -1 at 0.5 A g -1 with an energy density of 42.1 Wh kg -1 , a power density of 13.2 kW kg -1 , and a good cycling stability of 78.5% after 5000 cycles. This report presents new electrode materials for advanced supercapacitor technology based on these results. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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