Patent application number | Description | Published |
20110089369 | POSITIVE ELECTRODE MATERIAL FORMED BY A LAMELLAR-TYPE OXIDE FOR A LITHIUM BATTERY - A lamellar-type oxide, in particular used as active material of a positive electrode for a lithium battery and to a method for synthesizing such an oxide. The oxides are used as active materials for the positive electrode of a lithium battery. With such oxides, the specific capacity of a lithium battery is improved and stabilized on cycling. | 04-21-2011 |
20110171539 | Non-Aqueous Electrolyte for a High-Voltage Lithium Battery - The invention relates to a positive electrode/electrolyte pair for lithium batteries operating at a voltage above 4.2 V versus Li+/Li. The electrolyte of the lithium battery used in the invention includes at least a first additive chosen from optionally substituted, cyclic or acyclic, carboxylic or dicarboxylic anhydrides and carboxylic or dicarboxylic acids, and mixtures thereof, and optionally a second additive which is a lithium salt, the total content of additive(s) being greater than or equal to 0.01% by weight and less than or equal to 30% by weight, relative to the total weight of electrolyte, and the positive electrode is made of a material having a spinel structure. The lithium batteries of the invention are applicable in particular in the field of portable equipment, such as telephones, computers, camcorders, cameras and tooling. | 07-14-2011 |
20120119158 | COMPOSITE SULPHUR/CARBON CONDUCTIVE MATERIAL, USE AS AN ELECTRODE AND METHOD FOR PRODUCING SUCH A MATERIAL - A method for producing a composite sulphur/carbon conductive material obtained solely from an initial sulphur and an initial carbon which includes the following successive steps between 50% and 90% by weight of initial sulphur and between 50% and 10% by weight of initial carbon having a specific surface smaller than or equal to 200 m | 05-17-2012 |
20120135291 | METHOD FOR PREPARING A MIXTURE OF AN ELECTRODE ACTIVE COMPOUND POWDER AND AN ELECTRONIC CONDUCTOR COMPOUND POWDER, RESULTING MIXTURE, ELECTRODE, CELL AND BATTERY - A method for preparing a mixture of a powder of an electrode active compound and of a powder of an electron conducting compound, wherein the following successive steps are performed: a liquid medium is prepared containing the powder of the electrode active compound and the powder of the electron conducting compound; the liquid medium containing the powder of the electrode active compound and the powder of the electron conducting compound is subjected to the action of high energy ultrasonic waves; the liquid medium is removed; the mixture of the powder of the electrode active compound and of the powder of the electron conducting compound is collected. | 05-31-2012 |
20120279850 | METAL FLUOROPHOSPHATE SYNTHESIS AND USE AS AN ACTIVE MATERIAL FOR A BATTERY ELECTRODE - A method of synthesis of a metal fluorophosphate having the following general formula (1): X | 11-08-2012 |
20130034778 | METHOD OF FORMING A FILM MADE OF A FLUOROPOLYMER OF THE POLYVINYLLDENE FLUORIDE TYPE THAT CAN BE USED AS A SEPARATOR FOR A LITHIUM BATTERY - A film made of a fluorinated polymer of the polyvinylidene fluoride type having suitable properties for use as a lithium storage battery separator is produced using a phase inversion technique in which a solution containing the fluorinated polymer is brought into the presence of an atmosphere laden with water vapor to precipitate the fluorinated polymer. The fluorinated polymer can be precipitated by placing the support on which the solution is deposited, in which the fluorinated polymer has been previously dissolved, in an enclosure containing an atmosphere laden with water vapor and thermostatically regulated to a temperature comprised between 30° C. and 70° C. The relative humidity content during precipitation of the fluorinated polymer is advantageously between about 60% and about 98%. | 02-07-2013 |
20130040198 | Lithium Batteries Containing Lithium-Bearing Iron Phosphate and Carbon - The invention relates to lithium-bearing iron phosphate in the form of micrometric mixed aggregates of nanometric particles, to an electrode and cell resulting therefrom and to the method for manufacturing same, which is characterized by a nanomilling step. | 02-14-2013 |