Patent ID: 8124274

Claim:
An electrochemical battery cell, comprising: a housing; a negative electrode comprising lithium; a positive electrode coated onto a current collector, the positive electrode comprising a mixture of iron disulfide and a pH raising additive compound, wherein the pH raising additive compound is present in an effective amount to provide the mixture with a calculated pH of 6.5 to 14.0 and wherein the iron disulfide has a purity level of 95%; wherein the pH raising additive compound is selected from the group consisting of: an organic amine, a cycloaliphatic epoxide, an amino alcohol, an overbased metal sulfonate, triethylamine, diethylamine, butylene oxide, soybean oil epoxide, 2-amino-2-methyl-1-propanol and combinations thereof; and a non-aqueous electrolyte mixture comprising at least one salt dissolved in a solvent disposed within the housing.