| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.1586 |
| 발표분야 |
에너지 환경 (Energy and Environment) |
| 제목 |
Electrochemical characteristics of LiMn0.8Fe0.2PO4 cathode with polyacrylonitrile (PAN) based gel polymer electrolyte |
| 초록 |
Electrochemical properties of LiMn0.8Fe0.2PO4 cathode were investigated with gel polymer electrolyte (GPE). To access fast and efficient transport of ions and electrons during the charge/discharge process, a pure and well-crystallized LiMn0.8Fe0.2PO4 cathode material was directly synthesized via spray-pyrolysis method. For high operation voltage, polyacrylonitrile (PAN)-based gel polymer electrolyte was then prepared by electrospinning process. The gel polymer electrolyte showed high ionic conductivity of 2.9 × 10-3 S cm-1 at 25 °C and good electrochemical stability. Li/GEP/ LiMn0.8Fe0.2PO4 cell delivered a discharge capacity of 159 mAh g-1 at 0.1 C rate that was close to the theoretical value (170 mAh g-1). The cell allows stable cycle performance (99.3% capacity retention) with discharge capacity of 133.5 mAh g-1 for over 300 cycles at 1 C rate and exhibits high rate-capability. PAN-based gel polymer is a suitable electrolyte for application in LiMn0.8Fe0.2PO4/Li batteries with perspective in high energy density and safety. |
| 저자 |
권오현, 김재광
|
| 소속 |
청주대 |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
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