Patent ID: 6743550
Filing Date: 2004-06-01
Classification: H01M,Y02E

Abstract:
An electrochemical cell, which comprises:a) an anode; b) a cathode of a first current collector and a second current collector, each having opposed inner and outer major surfaces contactable with a cathode active material, wherein a first cathode active material of a first theoretical faradic capacity (Ah/g) is positioned between the first and second current collectors with at least the outer major surfaces of the first and second current collectors being contacted by second and third silver vanadium oxides as second and third cathode active materials having their respective second and third theoretical faradic capacities being within Â±10% of the first theoretical faradic capacity, wherein the second and third silver vanadium oxides are different and all cathode active materials are selected from the group consisting of MnO2, &bgr;-phase silver vanadium oxide (Ag0.35V2O5.18), &ggr;-phase silver vanadium oxide (Ag0.80V2O5.40), and &egr;-phase silver vanadium oxide (Ag1.0V2O5.5); and c) an electrolyte activating the anode and the cathode.