Patent ID: 6623887
Filing Date: 2003-09-23
Classification: H01M,Y02E

Abstract:
An electrochemical cell comprising an anode, a cathode, and an electrolyte operatively associated with the anode and the cathode, the improvement in the cell comprising:the cathode of a cathode active material comprising a mixture of a first cathode active material and a second cathode active material, wherein the first cathode active material is a reaction product of at least a first silver-containing material mixed with at least a first vanadium-containing material in a stoichiometric reaction ratio of Ag:V of substantially 1:2 to provide &egr;-silver vanadium oxide (&egr;-SVO) having an empirical formula of (Ag2V4O11) and wherein the second cathode active material is a reaction product of at least a second silver-containing material mixed with at least a second vanadium-containing material in a stoichiometric reaction ratio of Ag:V of substantially 0.8:2 to provide &ggr;-silver vanadium oxide (&ggr;-SVO) having an empirical formula of (Ag1.6V4O10.8) and wherein the &egr;-SVO and the &ggr;-SVO are then mixed together to provide the cathode active material having a stoichiometric formula AgxV4Oy with 1.69