Journal
JOURNAL OF POWER SOURCES
Volume 187, Issue 1, Pages 229-232Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2008.10.091
Keywords
Allyl tris(2,2,2-trifluoroethyl) carbonate (ATFEC); Flame retardant; Film-forming; Electrolyte additive; Lithium ion battery
Funding
- National 863 Program [2007AA03Z226]
- National 973 Program [2009CB220100]
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Allyl tris(2,2,2-trifluoroethyl) carbonate (ATFEC) was synthesized as a bi-functional additive of flame retardant and film former in electrolytes for lithium ion batteries (LIBs). The name retardancy of the additive was characterized with differential scanning calorimetry (DSC) and self-extinguishing time (SET). It is shown that adding 1 vol.% ATFEC in 1 M LiPF6/Propylene carbonate (PC) can effectively enhance the thermal stability of the electrolyte and suppress the co-intercalation of PC into the graphitic anode. Further evaluation indicates that the additive hardly affect the conductivity of electrolyte. These support the feasibility of using ATFEC as an additive on formulating an electrolyte with multiple functions Such as film-forming enhancement, high thermal stability and high ionic conductivity. (C) 2008 Elsevier B.V. All rights reserved.
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