콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Fluorinated carbonate-based electrolyte for high-voltage Li (Ni0. 5Mn0. 3Co0. 2) O2/graphite lithium-ion battery
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2017-01
- 저자명 Jinsol Im, Jieun Lee, Myung-Hyun Ryou, Yong Min Lee, Kuk Young Cho
- 학술지명 Journal of The Electrochemical Society
- 발행처명 IOP Publishing
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 5
- 논문 다운로드 링크(외부) https://doi.org/10.1149/2.0591701jes
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
A stable electrolyte system at a charge voltage over 4.5 V is the key to successfully obtaining higher energy density by raising the charging cutoff voltage. We demonstrate a fluorinated electrolyte (1 M LiPF6 fluoroethylene carbonate (FEC) and methyl (2,2,2-trifluoroethyl) carbonate (FEMC) (FEC/FEMC = 1/9, v/v)) for a high-voltage LiNi0.5Mn0.3Co0.2O2/graphite system. The stability of the fluorinated electrolyte for the LiNi0.5Mn0.3Co0.2O2 (NMC532) cathode was investigated using scanning electron microscopy, X-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy. The charge-discharge performance of the fluorinated electrolyte was superior to the corresponding non-fluorinated electrolyte system at a charging cutoff voltage of 4.7 V.
