Patent application number | Description | Published |
20080206631 | ELECTROLYTES, ELECTRODE COMPOSITIONS AND ELECTROCHEMICAL CELLS MADE THEREFROM - Electrochemical cells are disclosed that include electrodes comprising a composite that includes an active material, graphite and a binder. The amount of graphite in the composite is greater than about 20 volume percent of the total volume of the active material and graphite in the composite. The porosity of the composite is less than about 20%. The cells also comprise an electrolyte that includes a vinylene carbonate derivative or a halogenated ethylene carbonate derivative. | 08-28-2008 |
20080206641 | ELECTRODE COMPOSITIONS AND ELECTRODES MADE THEREFROM - A composite includes an active material, graphite, and a binder. The amount of graphite in the composite is greater than about 20 volume percent of the total volume of the active material and graphite in the composite. The porosity of the composite is less than about 20%. | 08-28-2008 |
20080248386 | ELECTRODES WITH RAISED PATTERNS - Provided is an electrode for an electrochemical cell that includes a current collector, and an active material in electrical contact with the current collector, wherein the electrode has a raised pattern as well as a method of making and using the same and also for electrochemical cells incorporating the same. | 10-09-2008 |
20080311464 | Method of Using an Electrochemical Cell - The silicon as an anode material for use in lithium ion batteries according to the present invention provides a method for cell manufacturing. The degree to which the silicon is lithiated during cycling can be controlled, thereby lowering the volume expansion while maintaining an acceptable volumetric capacity, and reducing the failure rate of the silicon containing anodes in lithium ion batteries. The crystalline silicon anode is first charged so that the anode becomes partially lithiated. The voltage of the anode during this charging step is typically less than the lithiation potential of crystalline silicon at ambient temperatures, for example, less than 17 OmV versus lithium metal. The total number of charge-discharge cycles during conditioning is at least two or more. | 12-18-2008 |
20090053589 | ELECTROLYTES, ELECTRODE COMPOSITIONS, AND ELECTROCHEMICAL CELLS MADE THEREFROM - Disclosed are electrochemical cells that include electrodes comprising an electrolyte comprising a vinylene carbonate or a halogenated ethylene carbonate, composite electrodes, and a binder. | 02-26-2009 |
20090111022 | ELECTRODE COMPOSITIONS AND METHODS - Provided is an electrode composition comprising an active material that includes cobalt, tin, and carbon along with methods of making and using the same. Also provided are electrodes that include the provided electrode compositions, electrochemical cells that include the provided electrodes, and battery packs that include at least one of the provided electrochemical cells. In some embodiments, the composition also includes iron. | 04-30-2009 |
20090297948 | METAL OXIDE NEGATIVE ELECTRODES FOR LITHIUM-ION ELECTROCHEMICAL CELLS AND BATTERIES - Provided are negative electrode compositions for lithium-ion electrochemical cells that include metal oxides and polymeric binders. Also provided are electrochemical cells and battery packs that include electrodes made with these compositions. | 12-03-2009 |
20100167126 | ELECTRODE COMPOSITIONS BASED ON AN AMORPHOUS ALLOY HAVING A HIGH SILICON CONTENT - An electrode composition for a lithium ion battery that includes an amorphous alloy having the formula Si | 07-01-2010 |
20100288982 | LOW ENERGY MILLING METHOD, LOW CRYSTALLINITY ALLOY, AND NEGATIVE ELECTRODE COMPOSITION - A method of making nanostructured alloy particles includes milling a millbase in a pebble mill containing milling media. The millbase comprises: (i) silicon, and (ii) at least one of carbon or a transition metal, and wherein the nanostructured alloy particles are substantially free of crystalline domains greater than 50 nanometers in size. A method of making a negative electrode composition for a lithium ion battery including the nanostructured alloy particles is also disclosed. | 11-18-2010 |
20100330428 | METHOD OF MAKING TIN-BASED ALLOYS FOR NEGATIVE ELECTRODE COMPOSITIONS - Powder milling techniques, tin-based alloys formed thereby, and the use of such alloys as electrode compositions for lithium ion batteries are provided. The alloys include tin and at least one transition metal but contain no silicon. The powder milling is done using low energy roller milling (pebble milling). | 12-30-2010 |
20110215280 | COMPOSITE NEGATIVE ELECTRODE MATERIALS - Composite particles that include an electrochemically active metal phase, an insulating phase, and a conducting phase are provided that are useful active materials in negative electrodes for lithium-ion electrochemical cells. The electrochemically active phase includes silicon. Lithium-ion electrochemical cells are provided that include the provided composite composite particles as active materials in negative electrodes as well as methods of making the provided composite particles. | 09-08-2011 |
20120003533 | METAL OXIDE NEGATIVE ELECTRODES FOR LITHIUM-ION ELECTROCHEMICAL CELLS AND BATTERIES - Provided are negative electrode compositions for lithium-ion electrochemical cells that include metal oxides and polymeric binders. Also provided are electrochemical cells and battery packs that include electrodes made with these compositions. | 01-05-2012 |
20120040245 | ELECTRODE COMPOSITIONS AND METHODS - Provided is an electrode composition comprising an active material that includes cobalt, tin, and carbon along with methods of making and using the same. Also provided are electrodes that include the provided electrode compositions, electrochemical cells that include the provided electrodes, and battery packs that include at least one of the provided electrochemical cells. In some embodiments, the composition also includes iron. | 02-16-2012 |
20120301782 | METHOD OF MAKING TIN-BASED ALLOYS FOR NEGATIVE ELECTRODE COMPOSITIONS - Powder milling techniques, tin-based alloys formed thereby, and the use of such alloys as electrode compositions for lithium ion batteries are provided. The alloys include tin and at least one transition metal but contain no silicon. The powder milling is done using low energy roller milling (pebble milling). | 11-29-2012 |