콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Effect of fluoroethylene carbonate on high temperature capacity retention of LiMn2O4/graphite Li-ion cells
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2010-02
- 저자명 Myung-Hyun Ryou, Gi-Beom Han, Yong Min Lee, Je-Nam Lee, Dong Jin Lee, Yeo Ok Yoon, Jung-Ki Park
- 학술지명 Electrochimica Acta
- 발행처명 Pergamon
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
- 논문 다운로드 링크(외부) https://doi.org/10.1016/j.electacta.2009.11.036
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
In order to overcome severe capacity fading of LiMn2O4/graphite Li-ion cells at high temperature at 60 °C, fluoroethylene carbonate (FEC) was newly evaluated as an electrolyte additive. With 2 wt.% FEC addition into the electrolyte (EC/DEC/PC with 1 M LiPF6), the capacity retention at 60 °C after 130 cycles was significantly improved by about 20%. To understand the underlying principle on the capacity retention enhancement, the electrochemical properties of the cells including cell performance, impedance behavior as well as the characteristics of the interfacial properties were examined. Based on these results, it is suggested that the improved capacity retention of LiMn2O4/graphite Li-ion cells with addition of FEC especially at high temperature is mainly originated from the thin and stable SEI layer formed on the graphite anode surface.
