Patent application number | Description | Published |
20080285211 | Li4Ti5O12,Li(4-alpha)ZalphaTi5O12 or Li4ZbetaTi(5-beta)O12 particles processes for obtaining same and use as electrochemical generators - Synthesis process for new particles of Li | 11-20-2008 |
20080292809 | COMPOSITION, METHOD AND DEVICE FOR APPLYING A COATING ON A SUPPORT - A composition for applying a coating on a support at low temperature from a dispersion of at least a component of the coating to be deposited in the composition. The composition includes at least a strong and heavy solvent with a boiling point higher than 150° C. approximately, and a weak solvent with a boiling point less than 100° C. approximately. The solvents forming the composition must constitute a mixture that evaporates at a temperature less than 100° C. The composition is particularly useful for forming electrodes or electrolyte in lithium-ion batteries. The method and the device used for forming the coating use a dispersion spreader and an infrared lamp. | 11-27-2008 |
20090017378 | COATED METAL OXIDE PARTICLES WITH LOW DISSOLUTION RATE, METHODS FOR PREPARING SAME AND USE THEREOF IN ELECTROCHEMICAL SYSTEMS - Particles comprising a core and a coat covering at least part of the core surface. The core has more than 50% of an acidic metal oxide and the core coating is based on a polymer, preferably based on a soiled polymer with high electrochemical stability. The particle has a solubility rate (ts), in fixed time, of the metal oxide migrating towards the electrolyte, per cycle, which is less than 5 per 10000. The particles are obtained by mixing the polymer and a metal oxide, via dry process with addition of solvent. The electrodes constituting an electrode substrate at least partly coated with a mixture consisting of at least 40 of those particles have remarkable electrochemical properties, in particular regarding the lifetime of batteries in which they are incorporated. | 01-15-2009 |
20090029263 | APROTIC POLYMER/MOLTEN SALT TERNARY MIXTURE SOLVENT, METHOD FOR THE PRODUCTION AND USE THEREOF IN ELECTROCHEMICAL SYSTEMS - The invention relates to an aprotic polymer/molten salt ternary mixture solvent and to a corresponding quaternary mixture additionally comprising an ionic conducting salt, which are prepared by mixing the constituents of the mixture. These mixtures are advantageously used in the preparation of electrochemical membranes, electrochemical systems and of electrochromic systems. The invention also relates to electrochemical and electrochromic systems obtained hereby that exhibit, in particular, excellent electrochemical properties at low temperatures. | 01-29-2009 |
20090087709 | CO-CRUSHED MIXTURE OF AN ACTIVE MATERIAL AND OF A CONDUCTIVE MATERIAL, PREPARATION METHODS AND USES THEREOF - A mixture of particles having a carrier based on at least one active material M | 04-02-2009 |
20090123845 | Electrolyte purification method, electrolytes and generators thus obtained and use of same - Process for the purification of an ionic electrolyte comprising at least one alkali metal salt, the process having at least one stage in which particles of at least one calcium salt are brought into contact. The process makes it possible to obtain electrolytes characterized in particular by a particularly low water content. The corresponding electrochemical generators which incorporate the electrolyte as constituent component are characterized by a noteworthy stability and are particularly safe. | 05-14-2009 |
20090155689 | Lithium iron phosphate cathode materials with enhanced energy density and power performance - The invention is related to a cathode material comprising particles having a lithium metal phosphate core and a pyrolytic carbon deposit, said particles having a synthetic multimodal particle size distribution comprising at least one fraction of micron size particles and one fraction of submicron size particles, said lithium metal phosphate having formula LiMPO | 06-18-2009 |
20090263723 | APROTIC POLYMER/MOLTEN SALT TERNARY MIXTURE SOLVENT, METHOD FOR THE PRODUCTION AND USE THEREOF IN ELECTROCHEMICAL SYSTEMS - The invention relates to an aprotic polymer/molten salt ternary mixture solvent and to a corresponding quaternary mixture additionally comprising an ionic conducting salt, which are prepared by mixing the constituents of the mixture. These mixtures are advantageously used in the preparation of electrochemical membranes, electrochemical systems and of electrochromic systems. The invention also relates to electrochemical and electrochromic systems obtained hereby that exhibit, in particular, excellent electrochemical properties at low temperatures. | 10-22-2009 |
20090297727 | COMPOSITION, METHOD AND DEVICE FOR APPLYING A COATING ON A SUPPORT - A composition for applying a coating on a support at low temperature from a dispersion of at least a component of the coating to be deposited in the composition. The composition includes at least a strong and heavy solvent with a boiling point higher than 150° C. approximately, and a weak solvent with a boiling point less than 100° C. approximately. The solvents forming the composition must constitute a mixture that evaporates at a temperature less than 100° C. The composition is particularly useful for forming electrodes or electrolyte in lithium-ion batteries. The method and the device used for forming the coating use a dispersion spreader and an infrared lamp. | 12-03-2009 |
20090301866 | MULTILAYER MATERIAL, METHOD FOR MAKING SAME AND USE AS ELECTRODE - A multilayer material includes a solid substrate and at least two superimposed solid layers containing particles of an electrochemically active material, the first solid layer adhering to the solid substrate and the second solid layer adhering to the first solid layer. The multilayer material has a constant thickness of upper layer not less than 95% and a depth of penetration of the second layer into the first layer which is less than 10% of the thickness of the first layer, and enables as electrode constituent, generators having a low risk of overload degradation to be prepared. | 12-10-2009 |
20100047692 | PARTICLES CONTAINING A NON-CONDUCTING OR SEMI-CONDUCTING NUCLEUS COVERED WITH A HYBRID CONDUCTING LAYER, THEIR PROCESSES OF PREPARATION AND USES IN ELECTROCHEMICAL DEVICES - Mixture of particles comprising a non-conducting or semi-conducting nucleus covered with a hybrid conductor coating and hybrid conductor chains located between the particles of the mixture to constitute a conductivity network, that is prepared by mechanical crushing. Due to a very good conductivity of the network, a low resistivity, a very good capacity under elevated current and/or a good density of energy, these mixtures of particles are advantageously incorporated in anodes and cathodes of electrochemical generators, resulting in highly performing electrochemical systems. | 02-25-2010 |
20100092808 | Potato-Shaped Graphite Particles with Low impurity Rate at the Surface, Method for Preparing the Same - Modified graphite particles obtained from graphite or based on graphite, the said particles having impurities in their internal structure and having on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics:
| 04-15-2010 |
20100173160 | METHOD FOR PREPARING CERAMIC POWDERS IN THE PRESENCE OF A CARBON SOURCE, POWDERS OBTAINED AND USE THEREOF - A method for preparing ceramic powders in the presence of a carbon powder comprising a step of homogenizing a mixture of particles capable of resulting in a ceramic by heat treatment. Said method can be carried out in the presence of an accelerated solvent and provides, at reduced energy consumption, carbon-coated ceramic powders and then ceramics. | 07-08-2010 |
20110068294 | COMPOSITE ELECTRODE MATERIAL - The invention relates to a composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which comprises co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers. | 03-24-2011 |
20110108771 | COMPOSITION, METHOD AND DEVICE FOR APPLYING A COATING ON A SUPPORT - A composition for applying a coating on a support at low temperature from a dispersion of at least a component of the coating to be deposited in the composition. The composition includes at least a strong and heavy solvent with a boiling point higher than 150° C. approximately, and a weak solvent with a boiling point less than 100° C. approximately. The solvents forming the composition must constitute a mixture that evaporates at a temperature less than 100° C. The composition is particularly useful for forming electrodes or electrolyte in lithium-ion batteries. The method and the device used for forming the coating use a dispersion spreader and an infrared lamp. | 05-12-2011 |
20110122476 | ELECTROCHROMIC OPTICAL LENS - The invention relates to an electrochromic optical lens and a method for the preparation thereof. The lens includes an electrode and a counter-electrode bearing an electrochromic material separated by a solid polymer electrolyte. The method consists of preparing the electrode and the counter-electrode and the assembly thereof by the surfaces thereof bearing the electrochromic material by interleaving an electrolyte membrane between said surfaces. The electrolyte membrane is interleaved in the form of a composition free of volatile liquid solvent, including a precursor of the polymer and a salt, which is liquid or which has a dynamic viscosity [mu] between 100 and 106 Pa.s. | 05-26-2011 |
20110123858 | COMPOSITE ELECTRODE MATERIAL - The invention relates to a composite material comprising carbon fibers and complex oxide particles, wherein the carbon fibers and the complex oxide particles have a carbon coating on at least part of their surface, said carbon coating being a non powdery coating The material is prepared by a method comprising mixing a complex oxide or precursors thereof, an organic carbon precursor and carbon fibers, and subjecting the mixture to a heat treatment in an inert or reducing atmosphere for the decomposition of the precursors The material is useful as the cathode material in a battery | 05-26-2011 |
20110266495 | COMPOSITE ELECTRODE MATERIAL - The invention relates to a composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which comprises co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers. | 11-03-2011 |
20120017429 | Process for the Preparation of an Electrode from a Porous Material, Electrode Thus Obtained and Corresponding Electrochemical System - Process for the preparation of electrodes from a porous material making it possible to obtain electrodes that are useful in electrochemical systems and that have at least one of the following properties: a high capacity in mAh/gram, a high capacity in mAh/liter, a good capacity for cycling, a low rate of self discharge, and a good environmental tolerance. | 01-26-2012 |
20120135311 | Li4Ti5O12, Li(4-alpha)ZalphaTi5O12 OR Li4ZbetaTi(5-beta)O12 PARTICLES, PROCESSES FOR OBTAINING SAME AND USE AS ELECTROCHEMICAL GENERATORS - Synthesis process for new particles of Li | 05-31-2012 |
20120237833 | MATERIAL CONSISTING OF COMPOSITE OXIDE PARTICLES, METHOD FOR PREPARING SAME, AND USE THEREOF AS ELECTRODE ACTIVE MATERIAL - A positive electrode material, having particles having a complex oxide OC1 core, an at least partial complex oxide OC2 coating, and an adhesive carbon surface deposit. The material is characterized in that the complex oxide OC1 is an oxide having a high energy density and in that the oxide OC2 is an oxide of a metal having a catalytic effect on the reaction of the carbon deposit, the oxide having good electronic conductivity. The presence of the OC2 layer facilitates the deposit of a carbon adhesive layer at the surface of the oxide particles, and improves the conductivity of the material when the latter is used as an electrode material. The electrode material can particularly be used in the manufacture of a lithium battery. | 09-20-2012 |
20130011554 | POTATO-SHAPED GRAPHITE PARTICLES WITH LOW IMPURITY RATE AT THE SURFACE, METHOD FOR PREPARING THE SAME - A method for modifying graphite particles having a prismatic shape or a cylindrical shape characterized by an edge function fe and a basal function fb, said method providing increase of the edge function and lowering of the basal function, wherein the method includes submitting the graphite particles to at least one physical means selected from attrition, jet mill, ball mill, hammer mill, or atomizer mill, in the presence of at least one chemical compound chosen from the group of compounds of the formula MF | 01-10-2013 |
20130216914 | MULTILAYER MATERIAL, METHOD FOR MAKING SAME AND USE AS ELECTRODE - A multilayer material including a solid substrate and at least two superimposed solid layers containing particles of an electrochemically active material, the first solid layer adhering to the solid substrate and the second solid layer adhering to the first solid layer. The multilayer material has a constant thickness of upper layer not less than 95% and a depth of penetration of the second layer into the first layer which is less than 10% of the thickness of the first layer, and enables as electrode constituent, generators having a low risk of overload degradation to be prepared. | 08-22-2013 |
20130247863 | PROCESS FOR PREPARING CERAMIC POWDERS IN THE PRESENCE OF A SOURCE OF CARBON, POWDERS THUS OBTAINED AND THEIR USE - A method for preparing ceramic powders in the presence of a carbon powder including a step which consists in homogenizing a mixture of particles capable of resulting in a ceramic by heat treatment. Said method can be carried out in the presence of an accelerated solvent and provides, at reduced energy consumption, carbon-coated ceramic powders and then ceramics. | 09-26-2013 |
20130323600 | Potato-Shaped Graphite Particles with Low impurity Rate at the Surface, Method for Preparing the Same - Modified graphite particles are obtained from graphite or based on graphite. The particles have impurities in their internal structure and have on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: a tab density between 0.3 and 1.5 g/cc; a potatolike shape; and a granulometric dispersion such that the D90/D10 ratio varies between 2 and 5 and the particles have a size between 1 and 50 μm. These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe. | 12-05-2013 |
20140023940 | LITHIUM-AIR BATTERY - The invention relates to an improved lithium-air battery. The battery includes a negative electrode and a positive electrode separated by an electrolyte, wherein the negative electrode consists of a film of metal material selected from among lithium and lithium alloys, the positive electrode includes a film of a porous carbon material on a current collector, and the electrolyte is a solution of lithium salts in a solvent. The battery is characterized in that the surface of the negative electrode opposite the electrolyte has a passivation layer containing Li | 01-23-2014 |
20140120420 | COMPOSITE ELECTRODE MATERIAL - A composite electrode material consisting of a carbon coated complex oxide, fibrous carbon and a binder. Said material is prepared by a method which includes co-grinding an active electrode material and fibrous carbon, and adding a binder to the co-grinded mixture to lower the viscosity of the mixture. The fibrous carbon is preferably vapor grown carbon fibers. | 05-01-2014 |
20140205911 | PARTICLES CONTAINING A NON-CONDUCTING OR SEMI-CONDUCTING NUCLEUS COVERED WITH A HYBRID CONDUCTING LAYER, THEIR PROCESSES OF PREPARATION AND USES IN ELECTROCHEMICAL DEVICES - Mixture of particles comprising a non-conducting or semi-conducting nucleus covered with a hybrid conductor coating and hybrid conductor chains located between the particles of the mixture to constitute a conductivity network, that is prepared by mechanical crushing. Due to a very good conductivity of the network, a low resistivity, a very good capacity under elevated current and/or a good density of energy, these mixtures of particles are advantageously incorporated in anodes and cathodes of electrochemical generators, resulting in highly performing electrochemical systems. | 07-24-2014 |
20140309100 | PROCESS FOR PREPARING CERAMIC POWDERS IN THE PRESENCE OF A SOURCE OF CARBON, POWDERS THUS OBTAINED AND THEIR USE - A method for preparing ceramic powders in the presence of a carbon powder including a step which consists in homogenizing a mixture of particles capable of resulting in a ceramic by heat treatment. Said method can be carried out in the presence of an accelerated solvent and provides, at reduced energy consumption, carbon-coated ceramic powders and then ceramics. | 10-16-2014 |
20140356725 | Li4Ti5O12, Li(4-a)ZaTi5O12 OR Li4Z Ti(5- )O12, PARTICLES, PROCESSES FOR OBTAINING SAME AND USE AS ELECTROCHEMICAL GENERATORS - Synthesis process for new particles of Li | 12-04-2014 |
20140374265 | PROCESS FOR THE PREPARATION OF AN ELECTRODE FROM A POROUS MATERIAL, ELECTRODE THUS OBTAINED AND CORRESPONDING ELECTROCHEMICAL SYSTEM - Process for the preparation of electrodes from a porous material making it possible to obtain electrodes that are useful in electrochemical systems and that have at least one of the following properties: a high capacity in mAh/gram, a high capacity in mAh/liter, a good capacity for cycling, a low rate of self-discharge, and a good environmental tolerance. | 12-25-2014 |
20150037673 | POSITIVE-ELECTRODE MATERIALS: METHODS FOR THEIR PREPARATION AND USE IN LITHIUM SECONDARY BATTERIES - There is provided a positive-electrode material for a lithium secondary battery. The material comprises a lithium oxide compound or a complex oxide as reactive substance. The material also comprises at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, there is provided a method for preparing the material as well as lithium secondary batteries comprising the material. | 02-05-2015 |