Document Details
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Document Type |
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Thesis |
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Document Title |
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HYBRID ELECTRODES BASED ON CONDUCTING POLYMERS NANOCOMPOSITES FOR ELECTROCHEMICAL SUPERCAPACITORS أقطاب مهجنة معتمدة على مركبات نانوية من البوليمرات الموصلة للمكثفات الكهروكيميائية الفائقة |
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Subject |
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Faculty of Science |
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Document Language |
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Arabic |
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Abstract |
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Supercapacitors have shown great promise as a possible solution to the increasing world demand for energy storage devices. Thus, the objective of this research is to develop and enhance the performance of poly(ortho-toluidine), PoT, based electrochemical supercapacitors by optimizing the synthesis parameter and design of the electrode materials. A poly (ortho-toluidine-co-aniline)/SiO2 nanocomposite electrode (Poly(oT-co-ANI)/SiO2 NC) was fabricated in one step using electrodeposition polymerization in 0.5 M H2SO4 at room temperature. The structure and morphology of the nanocomposites were investigated by UV-vis spectroscopy, FTIR spectroscopy, TEM, SEM, and 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 g-1) than the homopolymer PoT (29.5 F g-1 at 0.2 A g-1). Thus, the specific capacitance of nanocomposite is three times greater due to the 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 an energy storage capacity of 1.7 W h kg-1. |
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Supervisor |
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Dr. Aisha A. Ganash |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1442 AH
2021 AD |
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Co-Supervisor |
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Dr. Nuha Alhebshi |
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Added Date |
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Wednesday, May 26, 2021 |
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Researchers
| نجوى حمدان اليوبي | Alyoubi, Najwa | Researcher | Master | |
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