A new cathode design has a first cathode active material of a relatively low
energy
density but of a relatively high rate capability contacted to a first cathode current
collector and a second cathode active material having a relatively high energy
density but of a relatively low rate capability in contact with a second cathode
current collector, is described. The first and second cathode current collectors
are connected to a common terminal lead. The present cathode design is useful for
powering an implantable medical device requiring a high rate discharge application.
