LITHIUM-ION BATTERY WITH IMPROVED SELF-DISCHARGE CHARACTERISTICS

摘要

A non-aqueous lithium-ion cell electrolyte comprising a solution of a lithium salt in an organic solvent containing an additive comprising at least one Leiws basic species selected from the group of dimethyl acetamide (DMAC), tetramethylurea, dimethylpropylene urea, dimethylethylene urea, and N-methylpyrrolidone (NMP). The additive inhibits undesirable self discharge upon thermal abuse or after extended calendar life.