| 학회 |
한국화학공학회 |
| 학술대회 |
2018년 가을 (10/24 ~ 10/26, 대구 EXCO) |
| 권호 |
24권 2호, p.1630 |
| 발표분야 |
에너지 환경(Energy and Environment) |
| 제목 |
Bifunctional separator blocking the polysulfide anions in Li-S batteries |
| 초록 |
High order lithium polysulfide dissolves in electrolyte and it moves from cathode to anode in lithium-sulfur(Li-S) batteries. This shuttle effect causes the loss of active sulfur and it makes the electrochemical performances of cell decreased. It is most critical issue to enhance the Li-S battery performance. Here, we present a simple strategy to block the shuttle effect using metal-organic framework(MOF) and Nafion coated battery separator. -SO3 group in MOF and Nafion push the negatively charged polysulfide, but positively charged lithium ion can be permitted to pass. This functionalized -SO3 group also help to improve the ionic conductivity. This NOF-Nafion coated separator for Li-S batteries shows a low capacity decay(0.079% per cycle within 250 cycles) |
| 저자 |
김선화, 연정석, 박호석
|
| 소속 |
성균관대 |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
초록 보기 |
