| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
우수외국인연구자세션 |
| 제목 |
Understanding realistic energy densities in supercapacitors with hierarchically porous nitrogen doped graphene |
| 초록 |
We report synthesis of nitrogen doped three dimensional graphene (N-RGO) architectures. The detailed doping configurations analysed by XPS indicate the nitrogen content of around 6.2 at.%. The reduced graphene oxide has specific surface area of 190 m2 g-1 and specific capacitance up to 217 F g-1 at a scan rate of 5 mV s-1.The low charge transfer resistance confirmed by electrochemical impedance spectroscopy is associated with good rate capability. The N-RGO sample exhibits an excellent cyclic stability with no decay in capacitance even after 5000 cycles at scan rate of 100 mV s-1. A further study for high energy density supercapacitor (SC) is conducted by introducing micro porosity and 1-ethylimidazolium tetrafluoroborate (EMIMBF4) ionic liquid (IL) electrolyte in to the system, which is to be discussed. |
| 저자 |
Manikantan Kota, 박호석
|
| 소속 |
SKKU |
| 키워드 |
Supercapacitor; Nitrogen doping; Energy density
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| E-Mail |
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