Patent ID: 6165638
Filing Date: 2000-12-26
Classification: H01M,Y02E,Y02P

Abstract:
An electrochemical cell comprising a first electrode comprising a first electrode active material and a second electrode electrically associated with the first electrode to provide a first region having a first effective interelectrode surface area between the first and second electrodes and to provide a second, jellyroll region having a second effective interelectrode surface area between the first and second electrodes, and wherein the first region provides the cell dischargeable at a relatively low electrical current of about 1 microampere to about 100 milliamperes corresponding to a C-rate of about C/2,300,000 to about C/23, and wherein the second region provides the cell dischargeable at a relatively high electrical current of about 1 to about 4 amperes corresponding to a C-rate of about C/2.3 to about C/0.575.