Design of Non-Flammable Electrolytes for Highly Safe Lithium-Ion Battery

Abstract

The development of lithium-ion battery (LIB) technologies and their application inthe field of large-scale power sources, such as electric vehicles (EVs), hybrid EVs, and plug-inEVs require enhanced reliability and superior safety. The main components of LIBs shouldwithstand to the inevitable heating of batteries during high current flow. Carbonate solvents thatcontribute to the dissociation of lithium salts are volatile and potentially combustible and canlead to the thermal runaway of batteries at any abuse conditions. Recently, an interest in nonflammablematerials is greatly growing as a means for improving battery safety. In this reviewpaper, novel approaches are described for designing highly safe electrolytes in detail. Non-flammabilityof liquid electrolytes and battery safety can be achieved by replacing flammableorganic solvents with thermally resistive materials such as flame-retardants, fluorinated organicsolvents, and ionic liquids. PU - The Korean Electrochemical Society