Patent application number | Description | Published |
20090081557 | LITHIUM BATTERIES USING POLY(ETHYLENE OXIDE)-BASED NON-AQUEOUS ELECTROLYTES - Lithium-air cells using poly(ethyleneoxide) (PEO) siloxane-based or poly(ethyleneoxide) phosphate-based electrolytes may be prepared and exhibit improved charge carrying capacity. Such PEO silioxanes and phosphates generally have the formulas Ia, Ib, Ic, Id, IIa, IIb, IIc, where: | 03-26-2009 |
20090155691 | POSITIVE ELECTRODE FOR A LITHIUM BATTERY - A method for producing a lithium alkali transition metal oxide for use as a positive electrode material for lithium secondary batteries by a precipitation method. The positive electrode material is a lithium alkali transition metal composite oxide and is prepared by mixing a solid state mixed with alkali and transition metal carbonate and a lithium source. The mixture is thermally treated to obtain a small amount of alkali metal residual in the lithium transition metal composite oxide cathode material. | 06-18-2009 |
20090286157 | Surface modification agents for lithium batteries - An active material for an electrochemical device may have a surface modification agent that is a silane, organometallic compound, or a mixture of two or more of such compounds. Both negative and positive electrodes may be prepared from the surface modified active materials. The surface of an electrode may be modified by adding the surface modification agent to a non-aqueous electrolyte used in constructing a battery. An electrode or active material may be modified with a surface modification agent in either the gas phase or in solution. Slurries of the active agent may be prepared and the surface modification agent added, the slurry then be used to cast an electrode that is then dried. | 11-19-2009 |
20100040954 | ELECTROLYTE SALTS FOR NONAQUEOUS ELECTROLYTES - Metal complex salts may be used in lithium ion batteries. Such metal complex salts not only perform as an electrolyte salt in a lithium ion batteries with high solubility and conductivity, but also can act as redox shuttles that provide overcharge protection of individual cells in a battery pack and/or as electrolyte additives to provide other mechanisms to provide overcharge protection to lithium ion batteries. The metal complex salts have at least one aromatic ring. The aromatic moiety may be reversibly oxidized/reduced at a potential slightly higher than the working potential of the positive electrode in the lithium ion battery. The metal complex salts may also be known as overcharge protection salts. | 02-18-2010 |
20110076572 | NON-AQUEOUS ELECTROLYTES FOR ELECTROCHEMICAL CELLS - A non-aqueous electrolyte includes an ionic electrolyte salt, and a non-aqueous electrolyte solvent that includes a mixture of siloxane or a silane or a mixture thereof, a sulfone, and a fluorinated ether or fluorinated ester or a mixture thereof, an ionic liquid, or a carbonate. | 03-31-2011 |
20110121240 | COATED ELECTROACTIVE MATERIALS - A process includes suspending an electroactive material in a solvent, suspending or dissolving a carbon precursor in the solvent; and depositing the carbon precursor on the electroactive material to form a carbon-coated electroactive material. Compositions include a graphene-coated electroactive material prepared from a solution phase mixture or suspension of an electroactive material and graphene, graphene oxide, or a mixture thereof. | 05-26-2011 |
20110287326 | LONG LIFE LITHIUM BATTERIES WITH STABILIZED ELECTRODES - The present invention relates to non-aqueous electrolytes having stabilization additives and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, a first additive that is a substituted or unsubstituted organoamine, substituted or unsubstituted alkane, substituted or unsubstituted alkene, or substituted or unsubstituted aryl compound, and/or a second additive that is a metal (chelato)borate. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes, the new electrolytes provide batteries with improved calendar and cycle life. | 11-24-2011 |
20110293507 | PROCESS OF MAKING NANO-SCALE INTEGRATED TITANIA PARTICLES FOR LITHIUM BATTERY ELECTRODE APPLICATIONS - A process includes reacting a titanium compound with an oxalate compound in an acidic medium to form a titanium oxalate complex, where the titanium oxalate complex includes primary and secondary particles. The primary titanium oxalate complex particles may be from about 1 nm to about 200 nm; and the secondary titanium oxalate complex particles may be from about 0.5 μm to 50 μm. The titanium oxalate complex may be sintered to prepare a titania-based compound. The titania-based compounds may be used to fabricate electrodes for electrochemical cells. | 12-01-2011 |
20110294017 | REDOX SHUTTLES FOR LITHIUM ION BATTERIES - Compounds may have general Formula IVA or IVB. | 12-01-2011 |
20110294019 | ELECTRODE STABILIZING MATERIALS - An electrolyte includes a polar aprotic solvent; an alkali metal salt; and an electrode stabilizing compound that is a monomer, which when polymerized forms an electrically conductive polymer. The electrode stabilizing compound is a thiophene, a imidazole, a anilines, a benzene, a azulene, a carbazole, or a thiol. Electrochemical devices may incorporate such electrolytes. | 12-01-2011 |
20120080648 | ANODE MATERIALS FOR LITHIUM ION BATTERIES - A composite material has general Formula (1-x)J-(x)Q wherein: J is a metal carbon alloy of formula Sn | 04-05-2012 |
20120082903 | FUNCTIONALIZED IONIC LIQUID ELECTROLYTES FOR LITHIUM ION BATTERIES - An ionic liquid that is a salt has a Formula: | 04-05-2012 |
20120088160 | NON-AQUEOUS ELECTROLYTE FOR LITHIUM-ION BATTERY - The present technology relates to stabilizing additives and electrolytes containing the same for use in electrochemical devices such as lithium ion batteries and capacitors. The stabilizing additives include triazinane triones and bicyclic compounds comprising succinic anhydride, such as compounds of Formulas I and II described herein. | 04-12-2012 |
20120148731 | SURFACE MODIFICATION AGENTS FOR LITHIUM BATTERIES - A method includes modifying a surface of an electrode active material including providing a solution or a suspension of a surface modification agent; providing the electrode active material; preparing a slurry of the solution or suspension of the surface modification agent, the electrode active material, a polymeric binder, and a conductive filler; casting the slurry in a metallic current collector; and drying the cast slurry. | 06-14-2012 |
20120225352 | ELECTRODE MATERIALS FOR RECHARGEABLE BATTERIES - Selenium or selenium-containing compounds may be used as electroactive materials in electrodes or electrochemical devices. The selenium or selenium-containing compound is mixed with a carbon material. | 09-06-2012 |
20120276450 | SURFACE MODIFICATION AGENTS FOR LITHIUM BATTERIES - A method includes modifying a surface of an electrode active material including providing a solution or a suspension of a surface modification agent; providing the electrode active material; preparing a slurry of the solution or suspension of the surface modification agent, the electrode active material, a polymeric binder, and a conductive filler; casting the slurry in a metallic current collector; and drying the cast slurry. | 11-01-2012 |
20120280171 | PRODUCTION OF BATTERY GRADE MATERIALS VIA AN OXALATE METHOD - An active electrode material for electrochemical devices such as lithium ion batteries includes a lithium transition metal oxide which is free of sodium and sulfur contaminants. The lithium transition metal oxide is prepared by calcining a mixture of a lithium precursor and a transition metal oxalate. Electrochemical devices use such active electrodes. | 11-08-2012 |
20130022874 | POSITIVE ELECTRODE FOR A LITHIUM BATTERY - A method for producing a lithium alkali transition metal oxide for use as a positive electrode material for lithium secondary batteries by a precipitation method. The positive electrode material is a lithium alkali transition metal composite oxide and is prepared by mixing a solid state mixed with alkali and transition metal carbonate and a lithium source. The mixture is thermally treated to obtain a small amount of alkali metal residual in the lithium transition metal composite oxide cathode material. | 01-24-2013 |
20130071761 | CATALYTIC CATHODE FOR LITHIUM-AIR BATTERIES - A process includes contacting a carbon support material with an oxidizing agent followed by the acid treatment to form a functionalized carbon support material including surface hydroxyl functionality; contacting the functionalized carbon support material with a solution of a catalyst precursor; and adjusting the pH of the solution to produce a carbon supported catalyst material including a metal oxide catalyst. | 03-21-2013 |
20130230783 | LI-AIR BATTERIES HAVING ETHER-BASED ELECTROLYTES - A lithium-air battery includes a cathode including a porous active carbon material, a separator, an anode including lithium, and an electrolyte including a lithium salt and polyalkylene glycol ether, where the porous active carbon material is free of a metal-based catalyst. | 09-05-2013 |
20130288137 | REDOX SHUTTLES HAVING AN AROMATIC RING FUSED TO A 1,1,4,4-TETRASUBSTITUTED CYCLOHEXANE RING - An electrolyte includes an alkali metal salt; an aprotic solvent; and a redox shuttle additive including an aromatic compound having at least one aromatic ring fused with at least one non-aromatic ring, the aromatic ring having two or more oxygen or phosphorus-containing substituents. | 10-31-2013 |
20140186721 | NON-AQUEOUS ELECTROLYTE FOR LITHIUM-ION BATTERY - An electrolyte including an alkali metal salt; a polar aprotic solvent; and a triazinane trione; wherein the electrolyte is substantially non-aqueous. | 07-03-2014 |
20140212748 | ADVANCED SEPARATORS BASED ON AROMATIC POLYMER FOR HIGH ENERGY DENSITY LITHIUM BATTERIES - A process includes casting a solution including poly(phenylene oxide), inorganic nanoparticles, a solvent, and a non-solvent on a substrate; and removing the solvent to form a porous film; wherein: the porous film is configured for use as a porous separator for a lithium ion battery. | 07-31-2014 |
20140212755 | ELECTROACTIVE MATERIALS FOR RECHARGEABLE BATTERIES - An as-prepared cathode for a secondary battery, the cathode including an alkaline source material including an alkali metal oxide, an alkali metal sulfide, an alkali metal salt, or a combination of any two or more thereof. | 07-31-2014 |
20150037691 | REDOX SHUTTLES FOR LITHIUM ION BATTERIES - An electrolyte may include compounds of general Formula IVA or IVB. | 02-05-2015 |
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 |