Patent ID: 6692871
Filing Date: 2004-02-17
Classification: H01M,Y02E,Y10T

Abstract:
An electrochemical cell, which comprises:a) an anode; b) a cathode of a first cathode active material of a first energy density and a first rate capability short circuited with a second cathode active material of a second energy density and a second rate capability, wherein the first energy density of the first cathode active material is less than the second energy density while the first rate capability is greater than the second rate capability of the second cathode active material and wherein the cathode further cornprises first and second current collectors with the first cathode active material sandwiched between the current collectors and with the second cathode active material contacting the first and second current collectors opposite the first cathode active material; and c) a nonaqueous electrolyte activating the anode and the cathode.