| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
에너지저장·변환_포스터 |
| 제목 |
Enzymatically hydrolyzed cellulose nanofiber as carbon source for textile-like carbon wrapping of silicon anode in lithium ion batteries |
| 초록 |
Carbon coating plays a substantially important role for silicon anode in lithium ion batteries due to low conductivity of silicon. Commonly used carbon coatings have been found to be ineffective in preserving integrity of conductive network during repeated volume change of silicon. This research introduces the use of enzymatically hydrolyzed cellulose nanofiber as carbon source for textile-like carbon wrapping of silicon anode. The unique carbon network provides efficient electron and ion diffusion paths. Consequently, the electrode with novel structure exhibits high reversible capacity of 680 mAh g−1 at 8.0 A g−1 and good cycling performance (94.5 % capacity retention after 500 cycles) compared to conventionally used carbon coating. This result indicates that the textile-like carbon structure brings durable conductive network and better ion diffusion paths. |
| 저자 |
조영슬, 김종민, 박원철
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| 소속 |
서울대 |
| 키워드 |
Silicon anode; Li-ion battery; Enzymatically hydrolyzed cellulose nanofiber; Carbon wrapping
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| E-Mail |
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