Abstract: A hermetic seal for electrochemical cells. The seal is formed between first and second electronically conductive barrier members. The seal is formed by a cold weld between the first and second barrier members. At least one of the first barrier member and the second barrier member are configured to function as current collectors.

Abstract: A current collector for use in an electrochemical cell is provided. The current collector comprises: a reticulated core comprising a polymer and having continuous porosity; a first reticulated surface; a second reticulated surface opposite said first reticulated surface; and a thin metal film disposed on at least one of said first and second reticulated surfaces, wherein said current collector has continuous porosity. A high temperature resistant polymer is preferred for the reticulated core where the current collector may be exposed to high temperatures during production or use. The continuous porosity of the reticulated core 12 and the current collector allows for passage of electrolyte and ions, as necessary for operation of an electrochemical device that includes the current collector.

Abstract: The described invention relates to the use of parylene and composites of parylene as a flexible, sealable, and near hermetic barrier packaging material for nonaqueous electrochemical cells. Additionally, the invention relates to the technique of sealing of battery packaging material through the use of ultrasonic energy, and to the use of a low melting temperature inorganic barrier, which is predisposed between higher melting temperature polymer layers, that can be sealed to form a truly hermetic barrier at the interface.

Abstract: A current collector for use in an electrochemical cell is provided. The current collector comprises: a reticulated core comprising a polymer and having continuous porosity; a first reticulated surface; a second reticulated surface opposite said first reticulated surface; and a thin metal film disposed on at least one of said first and second reticulated surfaces, wherein said current collector has continuous porosity. A high temperature resistant polymer is preferred for the reticulated core where the current collector may be exposed to high temperatures during production or use. The continuous porosity of the reticulated core 12 and the current collector allows for passage of electrolyte and ions, as necessary for operation of an electrochemical device that includes the current collector.

Abstract: The described invention provides a method of patterning a thin film deposited on a substrate comprising applying a moving focused field of thermal energy to the thin film deposited on the substrate; and dewetting the thin film from the substrate. Dewetting the thin film from the substrate is characterized by a negative space of a desired design; and displacement of the thin film into adjacent structures, thereby accumulating thin film in the adjacent structures.

Abstract: The described invention provides compositions related to an electronically insulating amorphous or nanocrystalline mixed ionic conductor composition comprising a metal fluoride composite to which an electrical potential is applied to form 1) a negative electrode, and 2) a positive electrode, wherein the negative electrode and positive electrode are formed in situ.

Abstract: The described invention provides a packaged electrochemical device comprising an electrochemical battery, further comprising at least one electrochemical cell stack and a barrier packaging material. The present invention further provides a method of fabricating the packaged electrochemical device. The present invention further provides a flexible multifunctional liquid-based thermogalvanic cell that converts and stores electricity derived from low grade temperature differentials that exist in ubiquitous scenarios.

Abstract: The present invention relates to in situ formation of a single-layered electrochemical cell comprising a full tri-layer battery structure containing a discrete positive electrode, solid state electrolyte, and negative electrode from self-assembled nanocomposites. The single layered cell makes it possible to fabricate cells in three dimensions resulting in a very high energy density power source within very small and/or complex dimensions.

Abstract: The described invention provides a packaged electrochemical device comprising an electrochemical battery, further comprising at least one electrochemical cell stack and a barrier packaging material. The present invention further provides a method of fabricating the packaged electrochemical device. The present invention further provides a flexible multifunctional liquid-based thermogalvanic cell that converts and stores electricity derived from low grade temperature differentials that exist in ubiquitous scenarios.

Abstract: The present invention relates to primary and secondary electrochemical energy storage systems, particularly to such systems as battery cells, which use materials that take up and release ions as a means of storing and supplying electrical energy.

Abstract: The described invention provides self-forming compositions as positive electrode materials. The described invention further provides electrode compositions related to an electrochemical energy storage cell comprising a metal, a glass former and lithium fluoride.

Abstract: A composition, comprising: a composite including (i) a carbon fluoride component comprising a CFx material, wherein x?1, and having a first electrochemical property, and (ii) a carbonaceous material component having a second electrochemical property. The carbon fluoride component is 70 wt % to 99 wt % based on a total weight of the composite. The carbonaceous material component is 1 wt % to 30 wt % based on the total weight of the composite. The composite is adapted to react with energy applied thereto, and wherein, upon such reaction, the composite provides a third electrochemical property that is higher than the first electrochemical property, higher than the second electrochemical property, and higher than a combination of the first and second electrochemical properties.

Abstract: The described invention provides a method of patterning a thin film deposited on a substrate comprising applying a moving focused field of thermal energy to the thin film deposited on the substrate; and dewetting the thin film from the substrate. Dewetting the thin film from the substrate is characterized by a negative space of a desired design; and displacement of the thin film into adjacent structures, thereby accumulating thin film in the adjacent structures.

Abstract: The described invention provides self-forming compositions as positive electrode materials. The described invention further provides electrode compositions related to an electrochemical energy storage cell comprising a metal, a glass former and lithium fluoride.

Abstract: The described invention provides a packaged electrochemical device comprising an electrochemical battery, further comprising at least one electrochemical cell stack and a barrier packaging material. The present invention further provides a method of fabricating the packaged electrochemical device. The present invention further provides a flexible multifunctional liquid-based thermogalvanic cell that converts and stores electricity derived from low grade temperature differentials that exist in ubiquitous scenarios.

Abstract: The described invention provides compositions related to an electronically insulating amorphous or nanocrystalline mixed ionic conductor composition comprising a metal fluoride composite to which an electrical potential is applied to form 1) a negative electrode, and 2) a positive electrode, wherein the negative electrode and positive electrode are formed in situ.

Abstract: The present invention relates to bismuth oxyfluoride nanocomposites used as positive electrodes in primary and rechargeable electromechanical energy storage systems.

Abstract: A battery system for efficiently operating a battery under various circumstances, such as relating to extreme temperature ranges and varying load (i.e. current) ranges. The battery system generally includes at least one first cell having a first chemistry, at least one second cell having a second chemistry and a controller in communication with the first cell and the second cell. The controller is adapted to employ a chemical reaction of the first chemistry in the first cell or the second chemistry in the second cell. The first chemistry is different than the second chemistry, wherein the first chemistry and the second chemistry may be adapted to provide current over varying temperature ranges or to provide current for varying current loads.

Abstract: The present invention relates to primary and secondary electrochemical energy storage systems, particularly to such systems as battery cells, which use materials that take up and release ions as a means of storing and supplying electrical energy. The present positive electrode composition comprises a nanocrystalline bismuth fluoride compound, which comprises Bi+3, and has a maximum energy density of 7170 Wh/l?1.

Abstract: A safe and economical electrochemically active material useful in rechargeable battery cell electrode compositions comprises a nanostructure amalgam of a transition metal fluoride and carbon. The nanoamalgam may be prepared by subjecting a precursor mixture of a transition metal fluoride, such as FeF3, and carbon to extreme, high energy impact comminution milling which results in the conversion of the mixture to a unique and distinct nanostructure material. When incorporated as active electrode material in lithium battery cell fabrications, the nanoamalgam enables the attainment of stable specific discharge capacities in the range of 250 to 500 mAh/g.