Patent ID: 8753776

Claim:
An electrochemical cell comprising: an anode consisting essentially of lithium or a lithium alloy; a cathode comprising FeS 2 ; and an electrolyte consisting essentially of at least one solute dissolved in a solvent blend of at least 40 vol. % 1,3-dioxolane, at least 10 vol. % of one or more linear asymmetric ethers and an optional amount of 1,2-dimethoxyethane; wherein the linear asymmetric ethers have a structural formula R 1 —O—CH 2 —CH(CH 3 )—O—R 2 and wherein R 1 and R 2 are alkyl groups, the linear asymmetric ethers have 7 or more carbon atoms and R 1 ≠R 2 .