Nonaqueous electrolyte compositions comprising lithium malonatoborate and fluorinated solvent

摘要

Disclosed herein are electrolyte compositions comprising: a non-fluorinated carbonate; a fluorinated solvent; a lithium bis(malonato) borate compound represented by the formula:; wherein each Q₁ and Q₂ is independently a hydrogen, alkyl, allyl, acetylenic, aryl, or propargyl group; a fluorinated carbonate; and an electrolyte salt. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.