Patent ID: 6727022
Filing Date: 2004-04-27
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
An electrochemical cell, comprising:a) an anode; b) a cathode characterized as having been formed by a process consisting essentially of: i) positioning a first electrode active material into a pressing fixture; ii) positioning a current collector screen on top of the first electrode active material, wherein the first electrode active material is in a powder form having at least some particles sized to be able to move through at least one opening in the current collector screen; iii) positioning a second electrode active material on top of the current collector screen, thereby forming an electrode assembly, wherein the second electrode active material is in a form incapable of moving through the at least one opening in the current collector screen; and iv) pressing the electrode assembly from the direction of the second electrode active material to the first electrode active material to form the cathode; and c) a separator electrically isolating the anode from the cathode; and d) an electrolyte activating the anode and the cathode.