Patent ID: 8076028

Claim:
A primary electrochemical cell comprising a housing; a positive and a negative terminal; an anode comprising at least one of a lithium metal and lithium alloy; a cathode comprising iron disulfide (FeS 2 ), iron sulfide (FeS), and conductive carbon, said cell further comprising an electrolyte inserted therein, said electrolyte comprising a lithium salt comprising bistrifluoromethylsulfonyl imide (Li(CF 3 SO 2 ) 2 N) dissolved in a solvent mixture comprising dioxolane and sulfolane, wherein the FeS and FeS 2 , has a bimodal particle size distribution and wherein the FeS 2 has an average particle size between about 20 and 35 micron and the FeS has an average particle size between about 5 and 15 micron.