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Highly Stable Organosilicon Electrolytes for Li-ion Batteries

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high temperature electrolyte, Organosilicon, electrolyte, organosilane, Li-ion batteries

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      During the last two decades, a large effort has been devoted to improve the safety and performance of Li-ion batteries. Current commercial electrolytes are based on highly flammable solvents that make them dangerous for certain applications. Organosilicon (OS) electrolytes are a good alternative to conventional carbonate electrolytes. Silatronix has developed many organosilanes containing ethylene oxide units for \(Li^+\) coordination. These OS have properties suitable for their use in electrolytes including high thermal stability, high flash point, low vapor pressure and relatively low viscosities. The OS electrolytes are less flammable than commercial electrolytes, hence improving the safety of the batteries and have shown a performance comparable with the current standard electrolytes when used in Li-ion coin cells. Fluoroorganosilanes (FOS) have been found to be the best candidates for commercial application and have been successfully tested in coin cells at high temperature.

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