Effect of Synthesis Conditions on Pseudocapacitance Properties of Nitrogen-Doped Porous Carbon Materials
| Autor: | Volodymyr Boichuk, Andrii I. Kachmar, I. M. Budzulyak, S. I. Budzulyak, Volodymyr Kotsyubynsky, B. I. Rachiy, L. S. Yablon |
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| Rok vydání: | 2019 |
| Předmět: |
Supercapacitor
Materials science Nitrogen doped 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pseudocapacitance 0104 chemical sciences Dielectric spectroscopy symbols.namesake Porous carbon Chemical engineering symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Journal of Nano Research. 59:112-125 |
| ISSN: | 1661-9897 |
| Popis: | The electrochemical properties of the nitrogen-enriched carbons obtained by plant raw treatment as electrode material for supercapacitors were investigated by electrochemical impedance spectroscopy, cycling voltammetry and galvanostatic charge-discharge cycling in KOH aqueous electrolyte. The effect of activation agent (NaOH) concentration and carbonization temperature were analyzed. The separation of double layer and redox capacitance components was done. The dominating role of microporosity for capacitive properties was demonstrated. The capacitance of model capacitors based on carbons obtained at different modes was calculated from both from cycling voltammetry and galvanostatic charge-discharge data. The maximal values of specific capacitance of carbon materials carbonized at 600°C and 900°C are about 100 and 120 F/g, respectively. |
| Databáze: | OpenAIRE |
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