Carbon aerogel and their polypyrrole composites used as capacitive materials
| Autor: | Ayşe Bayrakçeken Yurtcan, Meryem Samancı, Elif Daş |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Supercapacitor
Materials science Supercritical carbon dioxide Renewable Energy Sustainability and the Environment Capacitive sensing Energy Engineering and Power Technology chemistry.chemical_element Aerogel 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Polypyrrole 7. Clean energy 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Fuel Technology Nuclear Energy and Engineering chemistry Composite material 0210 nano-technology Carbon |
| Zdroj: | International Journal of Energy Research. 45:1729-1747 |
| ISSN: | 1099-114X 0363-907X |
| DOI: | 10.1002/er.5841 |
| Popis: | Supercapacitors are the electrochemical capacitors with high energy density. In this study, first, carbon aerogels (CAs) having different structural properties (surface areas and pore diameters) were synthesized. Their polypyrrole (PPy) composites on these CAs were synthesized via oxidative polymerization. The change in the capacitive properties depending on both different CA structural properties and PPy addition was determined. The materials were characterized by Fourier Transform Infrared Spectrocope (FTIR), X-ray diffraction (XRD), nitrogen adsorption/desorption isotherms with Brunauer, Emmett and Teller (BET) method, scanning electron microscope (SEM), transmission Electron Microscope (TEM), elemental analysis and thermal gravimetric analysis (TGA) methods. Specific capacitances of the nanocomposites were determined by cyclic voltammetry (CV) method for fresh electrode and the aged electrode after 1000 cycles. It was observed that the specific capacitance of the composite obtained with the addition of PPy to the first type of carbon aerogel (CA1) material varies significantly and increased from 147 F g(-1)(CA1) to 231 F g(-1)(CA1/PPy). |
| Databáze: | OpenAIRE |
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