Abstract: A solid state laminar electrochemical cell comprising:an alkali metal anode layer;a solid ionically conductive electrolyte layer;a cathode composition layer; anda current collector;wherein said electrolyte layer is interposed between said alkali metal anode layer and said cathode layer and said cathode layer is interposed between said electrolyte layer and said current collector, the surface of said current collector which contacts said electrolyte layer being microroughened to enable the cathode layer to tightly adhere to said current collector is disclosed.

Abstract: Disclosed are methods for extending the cycle life of solid, secondary electrolytic cells employing a solid electrolyte having at least about 100 ppm water which methods involve an initial, substantially constant, high rate discharge of the fabricated, charged electrolytic cell.

Abstract: A solid secondary lithium electrochemical cell comprises a physical mixture of Li.sub.x Mn.sub.2 O.sub.4 (spinel) and at least one lithiated metal oxide selected from the group consisting of Li.sub.x NiO.sub.2 and Li.sub.x CoO.sub.2 wherein 0<x.ltoreq.2. The cell is particularly suitable for use with anodes composed of anodic carbon materials.

Abstract: An optical absorbance method for the quantitative determination of Lewis acid decomposition products in nonaqueous electrolytes.

Abstract: In accordance with the invention, a new cathode composition is prepared in a preferred method, in situ, in a cell whereby such in situ formation results in enhanced contact between the cathode composition and the current collector and between the electrolyte layer and the cathode composition.The new cathode composition of the invention comprises first and second polymeric materials, the first being radiation cured and ionically conductive and the second being electrochemically cured and electrically conductive. Preferably, the first is radiation cured before the second is electrochemically cured. The second polymeric material is cured in an electrochemical cell which comprises an alkali metal-containing anode layer. The cell desirably contains an electrolyte which consists of a solid ionically conductive polymeric material.

Abstract: This invention is directed to the use of polysiloxane acrylates in solid electrolytes containing a solid polymeric matrix. The solid electrolytes are used in electrochemical cells for secondary batteries.

Abstract: A new flat cell battery design is provided which incorporates a cathode and an anode terminal which are located in respective corners of a battery body. By locating the cathode and anode terminals in respective corners of the flat cell battery, the storage capacity and energy density of the battery are increased compared to conventional flat cell batteries. The corner terminal design of the present invention significantly improves packaging efficiency over common-edge terminals. In addition to increased volume efficiency, corner terminals improve thermal and electrical distribution properties of the battery. Physical separation of the terminals to adjacent or opposite corners also reduces the probability of inadvertent external short-circuit, resulting in improved safety.

Abstract: The invention provides an alkoxyl additive for use in electrodes or precursor pastes of such electrodes, where such additive is hydrolyzed to thereby take-up or remove any water in the precursor paste or electrode.

Abstract: A method of making non-stoichiometric vanadium oxides V.sub.6 O.sub.13+x by treatment with H.sub.2 O.sub.2 in an organic medium.

Abstract: There is provided an electrochemical cell which has a non-metal negative electrode (anode on discharge). That is, no solid metal active material is used. The active material of the anode is lithium manganese oxide, Li.sub.x Mn.sub.y O.sub.z. According to another aspect of the invention, both the anode and cathode are formed of lithium manganese oxide, such as Li.sub.x Mn.sub.2 O.sub.4, where the starting material for both the anode and cathode has a value of x in a range of 1.ltoreq.x.ltoreq.3.

Abstract: This invention is directed to a cathode containing a cathodic material, a conducting polymer replacing carbon as the conductive material, a solid matrix forming monomer, a solvent, and a viscosifier, as well as electrolytic cells prepared from such solid cathodes.

Abstract: The thin film electrode is prepared by first forming a bath of a molten lithium material in a vessel. The molten lithium containing material is selected among lithium, a lithium alloy and lithium containing compounds. A substrate is coated with a thin layer of the molten material by transporting the substrate below the vessel where it contacts the molten lithium material.

Abstract: This invention is directed to solid electrolytes containing a solvent and, in particular, a solvent comprising a mixture of an organic carbonate and an ion salt derivative (e.g., lithium) which functions as a source of ions for producing conductivity. The invention is also directed to electrolytic cells prepared from such solid electrolytes.

Abstract: An apparatus for measuring the conductivity of an electrolyte comprises at least one conductivity cell, e.g., syringe-type conductivity cell and a constant temperature jacket. The syringe-type conductivity cell preferably employed in the apparatus comprises a generally longitudinal, cylindrical wall and two electrode rods which serve to define a volume for testing the conductivity of a sample in the volume. The constant temperature jacket comprises at least one longitudinal chamber for holding a conductivity cell, a temperature sensing device, and a fluid channel which is in fluid communication with a source of constant temperature fluid.

Abstract: A terminal for a battery assembly is adapted to lose electrical conduct with a battery cell in the presence of gases within a battery chamber thereby disabling the battery. The disabling of the battery assembly gives the user an indication that the battery is defective and should not be recharged. Additionally, because the battery is disabled, no more gases will be formed in the battery assembly so the seal or the protective envelope will not burst exposing the battery cell to the environment.

Abstract: This invention is directed to an adhesion promoter layer promoter layer containing a binder and a conducting material having a reduced acidity, as well as electrolytic cells prepared with such adhesion promoter layers.

Abstract: Solid polymeric electrolytes are composed of a solid polymeric matrix formed by polymerization of organophosphorus compounds.

Abstract: A sample holder for diffraction analysis protects air or moisture sensitive samples and accommodates samples of different sizes, both without contributing to background noise. In particular, a sample holder for beam diffractometery includes a holder body having a substantially flat beam-facing top surface and a through-hole extending through the top surface, a piston fitted in the through-hole so as to travel along an axis of the through-hole, and a cup-shaped cap fitted over at least a portion of the top surface, surrounding the through-hole. To minimize background noise, the top surface of the holder body and a top surface of the piston are made of quartz. For sample loading, a substantially flat plate and a mechanism for removably attaching the plate so as to overlie the top surface of the holder body are provided. The cap may be made of thin plastic so as to not affect the incident X-ray beam.

Abstract: In an electrochemical cell having an active metal negative electrode, a positive electrode and a electrolyte separator there is provided a first layer between the negative electrode and the electrolyte separator, the layer comprises a carbon-based material which is a conductor of electrons and a conductor of metal ions of the negative electrode. The layer restricts penetration of electrolytic organic and anionic salt constituents therethrough and prevents degradation of the negative electrode.

Abstract: Disclosed is a process for making a solid electrolyte for use in solid state electrochemical device which process includes the use of a solvent comprising a low boiling point component having a boiling point not greater than about 100.degree. C. Specifically, the disclosed process comprises:(i) solvating a solid matrix-forming monomer or a partial polymer thereof in a solvent comprising at least one low boiling point solvent component having a boiling point not greater than 100.degree. C. and which is capable of solvating an electrolytic salt;(ii) coating the solvated monomer or partial polymer onto an electrode to form a layer of electrolyte precursor;(iii) covering said electrolyte precursor with a protective sheet layer which is substantially impervious to said solvent but which allows passage of radiation which cures the uncured electrolyte; and(iv) curing the electrolyte precursor by radiation through the sheet layer.