期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 13, 期 3, 页码 265-268出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.12.030
关键词
Lithium (fluorosulfonyl)(nonafluorobutanesulfonyl)imide; Nonaqueous electrolyte; Aluminum corrosion; Lithium-ion batteries
资金
- NSFC [50873041]
- 863 High-Tech Program [2007AA03Z246]
A novel lithium salt, lithium (fluorosulfonyl)(nonafluorobutanesulfonyl)imide (LiFNFSI), is investigated as a conducting salt to improve the high-temperature resilience of lithium-ion cells. It shows better thermal stability than LiPF6. The electrolyte having 1.0 M LiFNFSI in a mixture of ethylene carbonate (EC)/ethyl methyl carbonate (EMC) (3:7, v/v) shows high conductivity comparable to LiClO4, good electrochemical stability, and does not corrode aluminum. At both room temperature (25 degrees C) and elevated temperature (60 degrees C), the graphite/LiCoO2 cells with LiFNFSI exhibit better cycling performances than those with LiPF6. Particularly, at 60 degrees C, the capacity fading rate of the LiFNFSI-based cell without any additive is 37% after 100 cycles, while the cell with LiPF6 fails rapidly. These outstanding properties of LiFNFSI make it an attractive candidate to overcome the rapid capacity fading of lithium-ion batteries at elevated temperatures. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据