期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 129, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2021.107088
关键词
LiFSI; Corrosion; Stainless steel; Extreme fast charing
资金
- U.S. Department of Energy (DOE) [DE-AC05-00OR22725]
- Office of Energy Efficiency and Renewable Energy (EERE) Vehicle Technologies Office (VTO) (Technology Manager: Brian Cunningham)
The study found that the LiFSI electrolyte can passivate aluminum foil, but not stainless steel, and accelerates the electrolyte decomposition reaction.
The corrosion/passivation phenomenon of Al and stainless steel with 1.25 M LiFSI in ethylene carbonate / ethyl methyl carbonate 30/70 wt% electrolyte was studied in coin cell and pouch cell settings. Our results showed that the LiFSI electrolyte can passivate Al foil in the normal cell operation voltage window 2.8 to 4.3 V. In contrast, no passivation behavior was observed for stainless steel with ever growing current response in cyclic voltammetry test. Corrosion produced Fe/Cr ions were detected on the anode side, which accelerated the electrolyte decomposition reaction. The LiFSI electrolyte was tested in 1.5 Ah pouch cell for long term cycling performance and fast charging capabilities. The capacity retentions after 1000 cycles were 88.5% and 80% for +/- 1C and extreme fast charging rates, which demonstrated the suitability of using LiFSI in Li-ion cells without stainless steel components.
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