| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.881 |
| 발표분야 |
재료(Materials) |
| 제목 |
Fast and Scalable Hydrodynamic Synthesis of Defect-Free Graphene/MnO2 Nanocomposites |
| 초록 |
The integration of metal oxide and carbon material provides a great potential for the high energy and power density of supercapacitor, but the scale-up of fabrication process of such composite materials still remains a challenge. We report a fast, scalable, and one-pot hydrodynamic synthesis for the preparation of ion conductive and defect-free graphene from graphite and MnO2/graphene nanocomposites. The use of this hydrodynamic method using Taylor−Couette flow allows us to efficiently shear-exfoliate graphite into large quantities of high-quality graphene sheets. Deposition of MnO2 on graphene followed in a fluidic reactor in 10 min. The prepared MnO2/graphene nanocomposite shows an outstanding electrochemical performance, such as a high specific capacitance of 679 F/g at 25 mV/s, and a high rate capability of 74.7% retention at an extremely high rate of 1000 mV/s. |
| 저자 |
정재민1, 서동혁1, 곽병은1, 최봉길2, 김도현1
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| 소속 |
1한국과학기술원, 2강원대 |
| 키워드 |
재료 |
| E-Mail |
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| 원문파일 |
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