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8790320 
Journal Article 
Suppression of aluminum corrosion by using high concentration LiTFSI electrolyte 
Matsumoto, K; Inoue, K; Nakahara, K; Yuge, R; Noguchi, T; Utsugi, K 
2013 
Yes 
Journal of Power Sources
ISSN: 0378-7753 
231 
234-238 
WOS:000316036700030 
Although lithium bis(trifluoromethanesulfonyl imide) (LiTFSI) has a high thermal stability and fine tolerance to water and is an outstanding candidate as an electrolyte, there is an urgent need to control aluminum corrosion. Here, we explain how we suppressed aluminum corrosion by controlling the LiTFSI concentration. SEM observations and XPS depth profiles of the electrode at high LiTFSI electrolyte concentrations showed that stable passivation film composed of LiF was formed on an aluminum electrode, which prevented the continuous decomposition reaction of the LiTFSI electrolyte. As a result, a lithium-ion battery with LiTFSI demonstrated excellent properties for several cycles without aluminum corrosion, which should accelerate progress in its applications to industry. (C) 2012 Elsevier B.V. All rights reserved. 
Aluminum; Corrosion; Lithium bis(trifluoromethanesulfonyl imide); Passivation; Battery; Potential