Lithium cell

Abstract

A primary electrochemical is disclosed having an anode comprising lithium metal or lithium alloy, a cathode comprising iron disulfide (FeS2) and carbon particles, and electrolyte. The electrolyte has an additive therein desirably an alkylpyrazole or alkylimidazole. The alkylpryrazole preferably comprises 1,3-dimethylpyrazole or 1,3,5-trimethylpyrazole or mixtures thereof and the alkylimidazole preferably comprises 1,2-dimethylimidazole. A preferred electrolyte comprises a lithium salt dissolved in a solvent mixture comprising 1,3-dioxolane and sulfolane and said additive. The cell has the anode and cathode typically in wound configuration with a separator therebetween.

Dependencies are inferred from the claim text.