The Effect of Nano-sized SEI Film Formed by Vinyl Acetate Additive for Li-ion Batteries
Authors:
- 17 January 2003
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 32 (2) , 134-135
Abstract
The electrochemical performance of Li/graphite and LiCoO2/graphite cells were investigated in 1 M LiPF6 dissolved in propylene carbonate (PC) + dimethyl carbonate (DMC) (Vol. 1:2) alone and with 1 wt.% vinyl acetate (VA) additive in this study. Decomposition of solvents at graphite electrode could be remarkably suppressed by addition of the VA additive in the electrolyte, leading to the improvement of electrochemical performances of the cells. We found that the VA additive should give a solid electrolyte interphase (SEI) on the surface of graphite electrode, which effectively suppressed the PC decomposition in the electrolyte.Keywords
This publication has 3 references indexed in Scilit:
- Ethylene Sulfite as Electrolyte Additive for Lithium‐Ion Cells with Graphitic AnodesJournal of the Electrochemical Society, 1999
- Electrochemical behaviour of a graphite electrode in propylene carbonate and 1,3-benzodioxol-2-one based electrolyte systemJournal of Power Sources, 1998
- Electrochemical Intercalation of Lithium into GraphiteJournal of the Electrochemical Society, 1993