| abstract |
The invention is an electrochemical battery cell, particularly a Li/FeS2 cell, with a nonaqueous electrolyte. The electrolyte has LiI as a primary solute and a solvent including a relatively high level (45 to 80 volume percent) of 1,2-dimethoxyethane and a limited amount (5 to 35 volume percent) of 3-methyl-2-oxazolidinone. The inclusion of 3-methyl-2-oxazolidinone in the electrolyte provides an electrochemical cell which is economical to produce and has good discharge characteristics at room temperature, particularly on high rate and high power discharge, while also providing useful capacity at low temperatures. |