| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Synthesized Reduced graphene oxide (rGO) by modified Hummer’s method without additional reducing procedures by using appropriate drying temperatures under ambient atmosphere |
| 초록 |
We have synthesized Reduced graphene oxide (rGO) sheets by modified Hummer’s method by using appropriate drying temperatures under ambient atmosphere, without additional reducing procedures, such as chemical and thermal treatment. The sample dried at the appropriate temperature of 250℃ has the most increased specific surface area and porosity as revealed by SEM and BET analysis, leading to improved lithium, sodium and potassium ion storage properties. We confirmed the use of a moderate drying temperature led to cyclability and good electrochemical performance at high current densities. The dimensions of the sheets ranged from nanometers to micrometres and these were entangled with each other to form aggregates. These morphological features of rGO facilitates the movement of guest ions larger than Li-ions, however there were slight instability during repeated cycling. |
| 저자 |
Indeok Lee, Jun Lee, Hyeona park, Ojeong Lee, Yeongmin Kim, Jang-yeon Hwang, Jaekook Kim
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| 소속 |
Chonnam National Univ. |
| 키워드 |
Lithium Secondary Battery |
| E-Mail |
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