Mixtures of Glyoxylic Acetals and Organic Carbonates as Electrolytes for Lithium-Ion Batteries

In this work, we report a systematic investigation about the chemical-physical properties of mixtures containing glyoxylic solvents (tetramethoxyglyoxal (TMG) and tetraethoxyglyoxal (TEG)) and organic carbonates, and about the use of these blends as electrolytes for lithium-ion batteries (LIBs). We showed that these mixtures display promising conductivities and viscosities as well as high thermal stability. Furthermore, they also display significantly higher flash points (up to 60 degrees C) than the state-of-the-art LIB electrolytes. These mixtures can be successfully utilized for the realization of lab scale LIBs displaying high stability and good rate capability at high C-rate. Furthermore, LIBs containing this innovative electrolyte display good stability at room temperature as well as at 40 degrees C and 60 degrees C. Considering these results, mixtures of glyoxylic acetals and organic carbonates appear as promising electrolytes for advanced LIBs.