Screen-less anode design concepts for low cost lithium electrochemical cells for use in implantable medical device applications

摘要

A new cathode design having a first cathode active material of a relatively low energy density but of a relatively high rate capability contacted to one side of a current collector and a second cathode active material having a relatively high energy density but of a relatively low rate capability contacted to the opposite side thereof is described. A preferred cathode is: SVO/current collector/CF_x with the CF_x facing a lithium anode body devoid of a screen-type current collector. The lithium anode is either supported directly on the inner casing sidewall or is contacted to a relatively small strip of metal devoid of perforations and serving as an anode current collector electrically connected to the negative terminal.