Patent application number | Description | Published |
20090081529 | Positive electrodes for lithium batteries - This invention provides lithium-rich compounds as precursors for positive electrodes for lithium cells and batteries. The precursors comprise a Li | 03-26-2009 |
20090123842 | Manganese oxide composite electrodes for lithium batteries - An activated electrode for a non-aqueous electrochemical cell is disclosed with a precursor thereof a lithium metal oxide with the formula x{zLi | 05-14-2009 |
20100143784 | Manganese oxide composite electrodes for lithium batteries - An activated electrode for a non-aqueous electrochemical cell is disclosed with a precursor thereof a lithium metal oxide with the formula x{zLi | 06-10-2010 |
20100227220 | LITHIUM-OXYGEN (AIR) ELECTROCHEMICAL CELLS AND BATTERIES - This invention provides a lithium-oxygen or lithium-air electrochemical cell comprising a negative electrode, an electrolyte, and a porous activated positive electrode comprising lithium-rich electrocatalytic materials suitable for use in lithium-oxygen (air) cells and batteries. The activated positive electrode is produced by activating a precursor electrode formed from a material comprising one or more metal oxide compounds of general formula xLi | 09-09-2010 |
20110104576 | LITHIUM-OXYGEN ELECTROCHEMICAL CELLS AND BATTERIES - A lithium-oxygen electrochemical cell of the invention comprises a lithium-containing anode, an oxygen-permeable cathode, a non-aqueous electrolyte comprising a lithium salt in a non-aqueous liquid between the anode and the cathode, and a source of gaseous oxygen in fluid communication with the cathode; the cathode comprising an oxygen-permeable support bearing carbon nanotubes having at least one open end. In some embodiments, the cell is rechargeable and the cathode includes a nanoparticulate catalyst in contact with the carbon nanotubes; wherein the catalyst is adapted to facilitate the reversible interconversion between oxygen gas and an oxygen anion e.g., oxide ion, peroxide ion, or a combination thereof, during charge and discharge of the cell. | 05-05-2011 |
20110281154 | MATERIALS FOR ELECTROCHEMICAL DEVICE SAFETY - An electrochemical device includes a thermally-triggered intumescent material or a gas-triggered intumescent material. Such devices prevent or minimize short circuits in a device that could lead to thermal run-away. Such devices may include batteries or supercapacitors. | 11-17-2011 |
20120141860 | SURFACE STABILIZED ELECTRODES FOR LITHIUM BATTERIES - A method of stabilizing a metal oxide or lithium-metal-oxide electrode comprises contacting a surface of the electrode, prior to cell assembly, with an aqueous or a non-aqueous acid solution having a pH greater than 4 but less than 7 and containing a stabilizing salt, for a time and at a temperature sufficient to etch the surface of the electrode and introduce stabilizing anions and cations from the salt into said surface. The structure of the bulk of the electrode remains unchanged during the acid treatment. The stabilizing salt comprises fluoride and at least one cationic material selected from the group consisting of ammonium, phosphorus, titanium, silicon, zirconium, aluminum, and boron. | 06-07-2012 |
20120183837 | ELECTRODE MATERIALS FOR SODIUM BATTERIES - The present invention provides an electrode material suitable for use as a cathode in a sodium electrochemical cell or battery, the electrode comprising a layered material of formula Na | 07-19-2012 |
20130130095 | SURFACE STABILIZED ELECTRODES FOR LITHIUM BATTERIES - A stabilized electrode comprising a metal oxide or lithium-metal-oxide electrode material is formed by contacting a surface of the electrode material, prior to cell assembly, with an aqueous or a non-aqueous acid solution having a pH greater than 4 but less than 7 and containing a stabilizing salt, to etch the surface of the electrode material and introduce stabilizing anions and cations from the salt into said surface. The structure of the bulk of the electrode material remains unchanged during the acid treatment. The stabilizing salt comprises fluoride and at least one cationic material selected from the group consisting of ammonium, phosphorus, titanium, silicon, zirconium, aluminum, and boron. | 05-23-2013 |
20140212733 | HIGH CAPACITY ELECTRODE MATERIALS FOR BATTERIES AND PROCESS FOR THEIR MANUFACTURE - The present invention provides a nanostructured metal oxide material for use as a component of an electrode in a lithium-ion or sodium-ion battery. The material comprises a nanostructured titanium oxide or vanadium oxide film on a metal foil substrate, produced by depositing or forming a nanostructured titanium dioxide or vanadium oxide material on the substrate, and then charging and discharging the material in an electrochemical cell from a high voltage in the range of about 2.8 to 3.8 V, to a low voltage in the range of about 0.8 to 1.4 V over a period of about 1/30 of an hour or less. Lithium-ion and sodium-ion electrochemical cells comprising electrodes formed from the nanostructured metal oxide materials, as well as batteries formed from the cells, also are provided. | 07-31-2014 |
20140272563 | HIGH VOLTAGE, HIGH VOLUMETRIC ENERGY DENSITY LI-ION BATTERY USING ADVANCED CATHODE MATERIALS - The disclosed embodiments provide a battery cell. The battery cell includes an anode containing an anode current collector and an anode active material disposed over the anode current collector. The battery cell also includes a cathode containing a cathode current collector and a cathode active material disposed over the cathode current collector. The cathode active material has a composition represented by xLi | 09-18-2014 |
20150050561 | HIGH VOLTAGE LITHIUM ION BATTERIES HAVING FLUORINATED ELECTROLYTES AND LITHIUM-BASED ADDITIVES - A lithium ion cell includes a cathode including a cathode active material having an operating voltage of 4.6 volts or greater; an anode including an anode material and a lithium additive including a lithium metal foil, lithium alloy, or an organolithium material; a separator; and an electrolyte. | 02-19-2015 |