Lithium iodine battery having improved energy density

Abstract

A lithium-iodine cell comprising a lithium anode and a cathode comprising an iodine element, a charge transfer complex of an organic donor component and iodine, and a cathode current collector operatively positioned between the iodine element and the charge transfer complex. The iodine element comprises a solid pellet of pure, non-conductive iodine, and the organic donor component of the charge transfer complex is two-vinyl pyridine polymer. The current collector is a screen or the equivalent which allows iodine to diffuse from the iodine element through the collector to the charge transfer complex. The iodine element is optimized for maximum iodine content without regard for conductivity, and the cathode material is optimized for maximum conductivity without regard for excess iodine content.

Dependencies are inferred from the claim text.