Fabrication of a poly(o-toluidine-co-aniline)/SiO2 nanocomposite for an electrochemical supercapacitor application
| Autor: | Nuha A. Alhebshi, Najwa H. Alyoubi, Aisha A. Ganash |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanocomposite General Chemical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Capacitance 0104 chemical sciences Dielectric spectroscopy Chemical engineering Polymerization Electrode Materials Chemistry Fourier transform infrared spectroscopy Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Journal of Applied Electrochemistry. 50:1019-1035 |
| ISSN: | 1572-8838 0021-891X |
| Popis: | A poly(ortho toluidine-co-aniline)/SiO2 nanocomposite electrode (Poly(oT-co-ANI)/SiO2) was fabricated in one step using electrodeposition polymerization. The polymer layer was characterized using UV–Vis spectroscopy, FTIR spectroscopy, and SEM/EDX. The electrochemical performance of the nanocomposite electrode was tested in 1 M $$H2SO4$$ using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and the galvanostatic charge/discharge (GCD) technique. The Poly(oT-co-ANI)/SiO2 NC electrode presented a higher specific capacitance (87.79 F g−1 at 0.2 A) than the homopolymer PoT (29.5 F g−1 at 0.2 A). Thus, the specific capacitance of nanocomposite is three times greater due to large surface area and high porosity of the active material. Finally, the asymmetric full cell of Poly(oT-co-ANI)/SiO2 || graphene was tested and exhibited a maximum power of 4.25 W kg−1 and energy storage capacity of 1.7 W h kg−1. |
| Databáze: | OpenAIRE |
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