High discharge capacity lithium battery

Electrochemical cell, is special, comprising lithium cathode and iron disulfide anode battery. Front solution for battery, iron disulfide with inherent pH value; or the disulfide and improving pH value additive compound insulating with is fixed between the lowest pH of the computer pH value. The preferably for capacitor, improving pH value additive compound comprises a periodic table IIA element group or removing anode agent or the pH value control agent to the organic polyurethane and ring aliphatic epoxide series, aminoalcohol or the perbasic sulfonic of calcium. In one embodiment scheme, wherein the disulfide particles for battery with the middle grain size range of specific reducer. Method for is claimed manufacturing cathode and electrochemical cell, and electrochemical cell comprises the cathode; the cathode and improving pH value additive compound insulating comprising a (a) iron disulfide or a (b) iron disulfide, wherein a (a) inherent pH value or (b) is greater than or equal to the predetermined bars and computer pH value.