Abstract: A solid electrolyte primary cell comprising a lithium anode, a bromine cathode and a lithium bromide electrolyte. A solid lithium element operatively contacts the cathode material, and one form of cathode material is a charge transfer complex of an organic donor component material and bromine. The organic donor component material can be poly-2-vinyl pyridine. Another cathode material is liquid bromine. The surface of the lithium anode element which operatively contacts the cathode material can be provided with a coating of an organic electron donor component material. When the lithium anode operatively contacts the bromine cathode, a solid lithium bromide electrolyte begins to form at the interface and an electrical potential difference exists between conductors operatively connected to the anode and cathode.

Abstract: An enclosure for a lithium-iodine cell including a first casing containing the cell components and a second casing containing the first casing. The first casing is disposed so that the lid thereof is adjacent the bottom of the second casing. Both casings are of a material which is non-reactive with iodine such as epoxy material. The first casing is encapsulated in a polyester material for electrical insulation and sealing against iodine migration. The second casing is placed in an hermetically sealed outer casing of metal, the second casing being spaced from the lid of the outer casing.

Abstract: A lithium cell comprising a cathode including a region of iodine-containing material having a pair of operative surfaces and a cathode current collector in the region between the surfaces, a pair of lithium anode elements operatively contacting corresponding cathode surfaces and each having a current collector, and electrical conductors connected to the cathode and anode current collectors. Each anode element is fitted in a holder in a manner exposing a surface of each lithium element to the cathode material and sealing the anode current collector from exposure to the cathode material, the holders being of a material which does not exhibit electronic conduction when exposed to iodine. A pair of separator elements insulate the cathode conductor from the lithium anode elements. A pair of cells electrically connected in series and encapsulated in a single body provide a battery having an output of about 5 volts.

Abstract: A lithium-iodine cell comprising a cathode including a charge transfer complex of an organic donor component and iodine, an anode including a lithium element having a surface operatively contacting the charge transfer complex material, and a coating on the lithium surface of an organic electron donor material, preferably but not necessarily the organic donor component of the charge transfer complex. The organic electron donor material preferably comprises polyvinyl pyridine polymer and in particular two-vinyl pyridine polymer. A solution of two-vinyl pyridine polymer in benzene is brushed onto the anode lithium surface and then exposed to a desiccant. A number of coatings preferably are applied successively to provide a resulting or finished coating of increased thickness.

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.

Abstract: A lithium-iodine cell including a lithium anode, a lithium iodine electrolyte and a cathode comprising a source of iodine in the form of a substantially solid block or pellet of iodine and iodine-containing depolarizer material applied in the form of a relatively thin layer or coating to a lithium surface of the anode and to a surface of the iodine block. The depolarizer material serves to transport iodine ions from the source to the electrolyte, and the material is a charge transfer complex of an organic donor component and iodine such as 2-vinyl pyridine iodide.