| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
에너지저장변환 |
| 제목 |
2 nm sized SnO2 nanaoparticles sandwiched between rGO and amorphous carbon showed excellent capacity and rate performance |
| 초록 |
SnO2 is a well-known anode in lithium ion battery having a high theoretical capacity of 1493 mAh g-1. Nonetheless, it undergoes a volume change of ~260%, resulting in continuous capacity fading during cycling. To overcome this issue, in this work I synthesized 2 nm sized SnO2 nanoparticles sandwiched between reduced graphene oxide (rGO) and amorphous carbon in a single step and low temperature route. Ascorbic acid acts as both reducing agent and carbon source. The composite exhibited superior cyclic stability with a reversible capacity of 1245 mAh g-1 after 210 cycles at a discharge rate of 100 mA g-1. Rate performance experiment demonstrated that the composite showed a capacity of 420 mAh g-1 which is more than the theoretical capacity of graphite (372 mAh g-1) at a discharge rate of 10,000 mA g-1. Moreover, when the discharge rate revert back to the original value (100 mA g-1), specific capacity also regain the initial values demonstrating excellent stability of the electrode. |
| 저자 |
Md. Selim Arif Sher Shah, 유필진
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| 소속 |
Sungkyunkwan Univ. |
| 키워드 |
2 nm SnO2; rGO; amorphous carbon; single step; low temperature
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| E-Mail |
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