Patent ID: 6117591
Filing Date: 2000-09-12
Classification: H01M,Y02E

Abstract:
In combination with an implantable medical device requiring at least one current pulse for a medical device operating function, an electrochemical cell which is dischargeable to deliver the current pulse while exhibiting reduced voltage delay, the cell which comprises:a) an anode comprising lithium;b) a solid cathode of silver vanadium oxide as an electrically conductive material; andc) a nonaqueous electrolyte activating the anode and the cathode, the nonaqueous electrolyte comprising:i) a first solvent selected from the group consisting of an ester, an ether and a dialkyl carbonate, and mixtures thereof;ii) a second solvent selected from the group consisting of a cyclic carbonate, a cyclic ester and a cyclic amide, and mixtures thereof; andiii) a hydrogen fluoride additive present in the electrolyte at about 0.20M, wherein the activated anode and cathode provide the electrochemical cell dischargeable to deliver at least one current pulse for the medical device operating function, and wherein the current pulse is of an electrical current of a greater amplitude than that of a current immediately prior to the pulse.