Patent application number | Description | Published |
20100239940 | System and Method for Manufacturing Fuel Cell Stacks - A method of manufacturing a fuel cell stack is provided. The method provides forming an inspectable preassembly of multiple fuel cell assemblies that may be termed a pseudostack. Each fuel cell in the pseudostack has permanent electrical interconnections and sealing connections on only one of the two electrodes, namely an anode layer or a cathode layer. For example, an anode interconnect may be firmly attached to the anode layer by means of a bonding agent and a sealing agent used to seal passages on the anode layer of the fuel cell. Alternatively, seals and permanent electrical connections may be made on the cathode layer of the fuel cell, and not on the anode layer. | 09-23-2010 |
20110070496 | COMPOSITION AND ENERGY STORAGE DEVICE - In accordance with one aspect of the present invention, a cathode composition is provided that includes at least one transition metal or a transition metal salt, wherein the transition metal is at least one selected from the group consisting of nickel, iron, cobalt, chromium, manganese, molybdenum, and antimony; an alkali metal halide; a salt comprising an alkali metal halide and a metal halide; and a metal polysulfide compound MS | 03-24-2011 |
20110104570 | CATHODE COMPOSITIONS COMPRISING ZN AND CHALCOGENIDE AND ENERGY STORAGE CELL COMPRISING SAME - A cathode composition and a rechargeable electrochemical cell comprising same are disclosed. The cathode composition is described as comprising (i) particles including a transition metal selected from the group consisting of Ni, Fe, Cr, Mn, Co, V, and combinations thereof; (ii) alkali halometallate; (iii) alkali halide; (iv) source of Zn; and (v) source of chalcogenide. Also described is a rechargeable electrochemical cell comprising the composition. The source of Zn and source of chalcogenide in the cathode composition of a cell may be effective to improve the extractable capacity of cells, and decrease the cell resistance, relative to their absence. | 05-05-2011 |
20120077070 | COMPOSITION AND ENERGY STORAGE DEVICE - A cathode composition is provided. The cathode composition includes at least one electroactive metal, wherein the electroactive metal is at least one selected from the group consisting of titanium, vanadium, niobium, molybdenum, nickel, iron, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead and zinc; a first alkali metal halide; an electrolyte salt comprising a reaction product of a second alkali metal halide and a metal halide, wherein the electrolyte salt has a melting point of less than about 300 degrees Centigrade; and a metal chlorosulfide compound having a formula (I) M | 03-29-2012 |
20120164524 | COMPOSITION, ENERGY STORAGE DEVICE, AND RELATED PROCESSES - A positive electrode composition is provided. The positive electrode composition includes at least one electroactive metal, such as titanium, vanadium, niobium, molybdenum, nickel, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead, and zinc. The electroactive metal is present in an amount in a range from about 10 volume percent to about 20 volume percent, based on the volume of the positive electrode composition. The composition further includes iron, present in an amount in a range from about 0.2 volume percent to about 3 volume percent, based on the volume of the positive electrode composition; at least one first alkali metal halide; and an electrolyte salt. The electrolyte salt can be based on a reaction product of a second alkali metal halide and an aluminum halide, and has a melting point of less than about 300 degrees Celsius. An article, an energy storage device, and an uninterruptable power supply device that includes the positive electrode composition are also described; as is a method of forming the energy storage device. | 06-28-2012 |
20120219843 | COMPOSITION, ENERGY STORAGE DEVICE, AND RELATED PROCESSES - A positive electrode composition is provided. The positive electrode composition includes at least one electroactive metal selected from the group consisting of titanium, vanadium, niobium, molybdenum, nickel, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead, iron, and zinc. The composition further includes sodium iodide, present in an amount in a range from about 0.1 weight percent to about 0.9 weight percent, based on the weight of the positive electrode composition; a first alkali metal halide; and an electrolyte salt comprising a reaction product of a second alkali metal halide and an aluminum halide, wherein the electrolyte salt has a melting point of less than about 300 degrees Celsius. Related devices, such as a UPS device, also form embodiments of this invention. | 08-30-2012 |
20120308895 | ELECTRODE COMPOSITIONS USEFUL FOR ENERGY STORAGE DEVICES AND OTHER APPLICATIONS; AND RELATED DEVICES AND PROCESSES - A positive electrode composition is described, containing granules of at least one electroactive metal and at least one alkali metal halide. The granules have a substantially spheroidal shape. An energy storage device and an uninterruptable power supply device are also described. They include compartments for positive and negative electrode compositions; a solid separator capable of transporting alkali metal ions between the compartments; and associated current collectors for the electrodes. The positive electrode composition contains substantially spheroidal granules. Related methods for the preparation of an energy storage device are also disclosed. | 12-06-2012 |
20130084486 | ELECTROCHEMICAL CELLS INCLUDING A CONDUCTIVE MATRIX - An electrochemical cell includes an outer housing, a separator for separating an anode material from a cathode material, wherein the separator is disposed in the outer housing. The electrochemical cell also includes a conductive thin sheet disposed around an outer circumference of the separator, wherein the conductive thin sheet is disposed such that it allows passage of the anode material between the separator and the conductive thin sheet. The electrochemical cell further includes a conductive matrix disposed between, and in contact with, the conductive thin sheet and the outer housing. | 04-04-2013 |
20130108931 | POSITIVE ELECTRODE COMPOSITIONS USEFUL FOR ENERGY STORAGE AND OTHER APPLICATIONS; AND RELATED DEVICES | 05-02-2013 |
20130157140 | METHODS OF MAKING AND USING ELECTRODE COMPOSITIONS AND ARTICLES - A positive electrode composition is described, containing granules of at least one electroactive metal, at least one alkali metal halide and carbon black. An energy storage device and an uninterruptable power supply device are also described. Related methods for the preparation of a positive electrode and an energy storage device are also disclosed | 06-20-2013 |
20130196209 | ELECTRODE COMPOSITIONS, ENERGY STORAGE DEVICES AND RELATED METHODS - A positive electrode composition is presented. The composition includes at least one electroactive metal; at least one alkali metal halide; and at least one additive including a plurality of nanoparticles, wherein the plurality of nanoparticles includes tungsten carbide. An energy storage device, and a related method for the preparation of an energy storage device, are also presented. | 08-01-2013 |
20140062412 | METHOD OF CHARGING AN ELECTROCHEMICAL CELL - A method of pulse charging a secondary electrochemical storage cell is provided. The secondary cell includes a negative electrode comprising an alkaline metal; a positive electrode comprising at least one transition metal halide; a molten salt electrolyte comprising alkaline metal haloaluminate; and a solid electrolyte partitioning the positive electrode from the negative electrode, such that a first surface of the solid electrolyte is in contact with the positive electrode, and a second surface of the solid electrolyte is in contact with the negative electrode. The method of charging includes polarizing the cell by applying a polarizing voltage greater than about 0.1 V above the cell's rest potential for a first predetermined period of time; depolarizing the cell for a second predetermined period of time; and repeating the polarizing and depolarizing steps until a charging end-point is reached. | 03-06-2014 |
20140349159 | ELECTROCHEMICAL CELLS AND RELATED DEVICES - An electrochemical cell is presented. The electrochemical cell includes an ion-conducting separator having a first surface that defines at least a portion of a first compartment and a second surface that defines at least a portion of a second compartment, and a positive electrode composition disposed in the first compartment, the positive electrode composition comprising an electroactive metal, an alkali metal halide, and an electrolyte. The electroactive metal includes metal flakes of an average aspect ratio greater than about 5. An energy storage battery including a plurality of electrochemical cells is also presented. | 11-27-2014 |