Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290613 | Journal of Power Sources | 2008 | 5 Pages |
Abstract
Phenyl tris-2-methoxydiethoxy silane (PTMS) has been studied as an additive to the PC-based electrolyte of lithium ion batteries with graphite anode. An electrolyte of 1.0 M LiPF6 in propylene carbonate (PC):dimethyl carbonate (DMC) (1:1 v/v) containing phenyl tris-2-methoxydiethoxy silane can suppress the co-intercalation of PC. The main reason for this suppression is that silane can form a cross-polymerized network of SiOSi bonds on the graphite surface, thus restraining PC molecules from co-intercalating with lithium ions into graphite electrodes. The electrochemical properties of the modified electrolyte were characterized by cyclic voltammetry, charge/discharge tests, SEM, XPS and FT-IR.
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Authors
Q. Xia, B. Wang, Y.P. Wu, H.J. Luo, S.Y. Zhao, T. van Ree,