Abstract: This invention is directed to a novel solid polymer electrolyte more particularly thin film terpolymer networks are disclosed that are highly conductive at ambient temperatures. This solid polymer electrolyte can be produced as a thin film that results from the polymerization of three selected monomers together with a lithium salt and plasticizers. The resulting solid polymer electrolyte does have excellent mechanical properties and ionic conductivity at ambient temperatures and can be used in the fabrication of a solid state battery and other solid state electrochemical devices such as supercapacitors, fuel cells, sensors, electrochromic devices or the like.

Abstract: This invention is concerned with a method for producing thin film solid polymer electrolytes and more particularly to a method for producing solid thin reinforced terpolymer electrolyte films for use in the fabrication of solid state rechargeable batteries and other solid state electrochemical devices such as supercapacitors, fuel cells, sensors and the like.

Abstract: An inorganic electrolyte rechargeable electrical storage cell is shown which makes use of non-metallic electrodes in combination with an inorganic electrolyte that includes sulfur dioxide. The electrolyte can be for example a lithium and/or a calcium tetrachloroaluminate salt in sulfur dioxide. The anode of the cell is made of a carbon for example a graphite while the cathode is produced from a carbon having a relatively much higher surface area.

Abstract: This disclosure relates to a method for making a lithium anode for an electrochemical cell and more particularly to a method of extruding a ribbon of lithium into a reaction chamber for reacting the surface of the extruded lithium metal with nitrogen to produce a coating of lithium nitride on the surface of the lithium metal ribbon.

Abstract: An electrolyte salt is shown herein for use in lithium/thionyl chloride primary cells that is provided to minimize the start-up delay otherwise encountered after too long a storage period or storage at too high a temperature. The salt is a reaction product produced by refluxing lithium triflate with either aluminum chloride or lithium tetrachloraluminate or a mixture of thereof dissolved in thionyl chloride.

Abstract: A lithium electrochemical power source is shown, adapted for use as a primary and/or secondary cell, wherein a non-aqueous electrolyte is used, the solvent being a C.sub.2 to C.sub.4 aliphatic acid chloride and the solute being a lithium aluminum halide with an additive selected from the group consisting of bromine and iodine.

Abstract: Method for the reactive dehydration of manganese dioxide. Dehydration is achieved by contact with a fluid desiccant (dehydrating agent) which reacts with water bound to manganese dioxide. Preferably, a gaseous product or a low boiling point liquid which easily produces vapors is formed. The manganese dioxide is then removed from the fluid desiccant and any adhering dessicant fluid and volatile reaction products are removed from the manganese dioxide under vacuum. Especially preferred for use as the dehydrating agent is thionyl chloride. The present invention is particularly suitable for dehydrating manganese dioxide to be used as electrodes in lithium batteries.

Abstract: A strip of electrode material is extended across a through-hole in a supporting surface and pushed through the hole into a container of an electrochemical cell. The strip assumes a generally U-shaped appearance as it is pushed through the hole by a mandril. The mandril preferably includes an elastomeric head which expands radially outward upon pressing contact with the interior base wall of the container so as to press the trailing legs of the U-shaped material outward against the interior container wall.

Abstract: An electrochemical cell of the type characterized by an essentially constant operating voltage essentially independent of the degree of cell discharge is disclosed, which in its output voltage exhibits one or more step changes of predetermined and fully adjustable magnitudes at any predetermined point or points during the life of the cell. This enables timely replacement of the cell under non-critical circumstances, and also can be used to indicate state of discharge of the cell. In essence, the anode of the cell comprises a plurality of anode elements which become depleted at mutually different degrees of cell discharge. As each anode element becomes depleted, the internal resistance of the cell increases to cause a drop in the operating voltage of the cell as the remaining active anode elements are required to supply the required current.

Abstract: In accordance with the invention, a novel electrochemical cell and a method for making same is provided which is particularly suitable for use in a battery of the type employing one or more cells. One feature of the cell includes a sealed non-metallic pouch of thin flexible material which forms a cell adaptable to varying battery configurations as well as cell shapes. A second feature of the cell includes a novel feedthrough arrangement wherein a pair of electrically conductive members are located on respective sides of an interjacent through-hole formed in the housing material. The pair of electrically conductive members are coupled through the through-hole to form the feedthrough. An electrode of anode material is electrically coupled to the internally located member of one feedthrough pair. An electrode of cathode material is electrically coupled to the internally located member of the other feedthrough.

Abstract: A lithium/thionyl chloride electrochemical cell, particularly suitable for use in surgically implanted devices, is disclosed which exhibits a step change in its output voltage sufficiently prior to full cell discharge to enable the timely replacement of the cell under non-critical circumstances.

Abstract: A "ball and socket" seal arrangement for an electrochemical cell is disclosed wherein a ball of insulating material is captively retained in a socket formed by a portion of the cell cover in cooperation with a retaining member. The cell feedthrough passes through the socket and the insulating ball. After assembly of the components, the sockets are compressed, thereby forcing the insulator ball to conform to the inner surface of the socket to make an effective seal.

Abstract: The lithium/carbon/SO.sub.2 energy cell is disclosed wherein the electrolyte includes lithium tetrachloroaluminate. In order to increase the electrical capacity of the cell, the concentration of lithium tetrachloroaluminate in the electrolyte is increased .[.to.]. .Iadd.and .Iaddend.calcium tetrachloroaluminate .[.and.]. .Iadd.is .Iaddend.added to the solution to aid the mass transport as well as .[.the.]. .Iadd.to .Iaddend.lower .Iadd.the .Iaddend.freezing point of the electrolyte. In order to eliminate any corrosive effect of the calcium .[.added.]. .Iadd.additive .Iaddend.to on the lithium anode, this disclosure provides a teaching of the use of an electrolyte solution .[.and.]. .Iadd.that .Iaddend.is essentially free of any .[.moist.]. .Iadd.moisture .Iaddend.content.