| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 |
20권 1호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
Influence of surface oxygen functional group on the electrochemical behavior of porous silicon carbide based supercapacitor electrode |
| 초록 |
Micro and mesoporous silicon carbide flakes (PSF) with a high surface area of approximately 1376 m2 g−1 were obtained by one-step carbonization of Si. The micropores originated from the partial evaporation of Si atoms during the carbonization process, while the mesopores were formed by the integration of neighboring micropores. Subsequently, oxygen-containing functional groups were introduced on the PSF surface to stimulate the faradic redox reaction during the charge/discharge process. The PSF electrode oxidized for 24 h (OPSF-24h) exhibits a high charge storage capacity, showing a specific capacitance of 243.3 F g−1 at a scan rate of 5 mV s−1 with 85.6% rate performance from 5 to 500 mV s−1 in 1 M KCl aqueous electrolyte. This outstanding capacitive performance of OPSF-24h electrode can be attributed to the synergistic effect between the electric double-layer capacitive contribution of the PSF and the pseudocapacitive contribution of the oxygen-containing functional groups. |
| 저자 |
김명진, 김주헌
|
| 소속 |
중앙대 |
| 키워드 |
supercapacitor; silicon carbide; oxygen functional group
|
| E-Mail |
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