Patent application number | Description | Published |
20100297519 | CATHODE FOR FUEL CELL HAVING TWO KINDS OF WATER-REPELLENCY AND METHOD OF PREPARING THE SAME AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL COMPRISING THE SAME - A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell. | 11-25-2010 |
20100304269 | Electrode For Fuel Cell And Method Of Preparing The Same And Membrane Electrode Assembly And Fuel Cell Comprising The Same - The present invention relates to an electrode for a fuel cell including a catalyst layer that includes a catalyst portion containing a plurality of first catalyst particles dispersed in an ionomer binder resin; and an ionomer portion containing a plurality of second catalyst particles dispersed in an ionomer binder resin, and having a lower concentration of catalyst particles than the catalyst portion, wherein the ionomer portion has a shape of a wall or plural pillars in the catalyst portion. The electrode for a fuel cell according to the present invention has a separate ionomer portion in the catalyst layer, and thus has excellent ion conductivity in an electrode layer and the remarkably improved reaction surface area to enhance the performance of the fuel cell. | 12-02-2010 |
20110020724 | ELECTRODE FOR FUEL CELL HAVING TWO KINDS OF HYDROPHILICITY AND METHOD FOR PREPARING THE SAME AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL COMPRISING THE SAME - An electrode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the electrode has two portions with different hydrophilicities. A portion of the catalyst layer that faces a channel has a higher hydrophilicity than a portion that does not face a channel. This electrode may control hydrophilicity of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way, thereby improving the performance of the cell. | 01-27-2011 |
20110029825 | APPARATUS AND METHOD FOR SYMBOL ERROR CORRECTABLE MODULATION AND DEMODULATION USING FREQUENCY SELECTIVE BASEBAND - Provided are symbol-error-correctable modulation and demodulation methods and apparatuses using a frequency selective baseband. The symbol-error-correctable frequency modulation method using a frequency selective baseband, includes: generating a plurality of subgroups by dividing 2N (N is a real number) spread codes or orthogonal codes used for frequency spreading into 2M (M02-03-2011 | |
20110154149 | PARITY GENERATING APPARATUS AND MAP APPARATUS FOR TURBO DECODING - An apparatus for generating a parity bit for turbo decoding, and a MAP (Maximum A Posteriori) apparatus are provided. The apparatus for generating a parity bit for turbo decoding includes: a index converter calculating forward and reverse state matrices with respect to a parity bit by maintaining or changing the relationship between the forward and reverse state matrices with respect to information bits and input symbols according to an encoder state; and a parity calculation unit calculating a parity bit by using the forward and reverse state matrices calculated by the parity state matric calculation unit. | 06-23-2011 |
20110189575 | METHOD FOR MANUFACTURING POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL, MEMBRANE ELECTRODE ASSEMBLY AND POLYMER ELECTROLYTE MEMBRANE FUEL CELL - Provided are a method for manufacturing a polymer electrolyte membrane for a fuel cell, a membrane electrode assembly and a polymer electrolyte membrane fuel cell. The manufacturing method includes (S | 08-04-2011 |
20110200907 | ION CONDUCTIVE RESIN FIBER, ION CONDUCTIVE HYBRID MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL - Provided are an ion conductive resin fiber, an ion conductive hybrid membrane, a membrane electrode assembly and a fuel cell. The ion conductive resin fiber comprises an inner layer including an ion conductive resin; and an outer layer including an ion conductive resin having larger EW than the ion conductive resin of the inner layer, and surrounding the inner layer. The ion conductive resin fiber and the ion conductive hybrid membrane are excellent in ion conductivity, polar solvent stability and dimensional stability under low humidity conditions. The fuel cell manufactured using the same has advantages of stable operation and management of a system at ease, removal or reduction of components related to water management, and even in case of low relative humidity, operation at high temperature of 80° C. or higher. | 08-18-2011 |
20120089882 | PACKET COMBINING DEVICE AND METHOD FOR COMMUNICATION SYSTEM USING HYBRID AUTOMATIC REPEAT REQUEST - A packet combining device for a communication system using hybrid automatic repeat request (HARQ) includes: a HARQ buffer; a combiner configured to combine data which is previously received and stored in the HARQ buffer with newly-received data; and a channel decoder configured to attempt channel decoding by using the combined received data provided from the combiner and provide one or more of log likelihood ratios (LLRs) computed for a systematic bit and a parity bit of the combined received data to the combiner such that the one or more LLRs are combined with the data used for channel decoding. | 04-12-2012 |
20130273450 | TRI-BLOCK COPOLYMER AND ELECTROLYTE MEMBRANE MADE FROM THE SAME - Provided are a tri-block copolymer and an electrolyte membrane prepared therefrom. The tri-block copolymer has a structure of polar moiety-containing copolymer block/non-polar moiety-containing copolymer block/polar moiety-containing copolymer block, or non-polar moiety-containing copolymer block/polar moiety-containing copolymer block/non-polar moiety-containing copolymer block, and is useful for an electrolyte membrane for fuel cells. The electrolyte membrane for fuel cells prepared from the tri-block copolymer exhibits superior dimensional stability and excellent fuel cell performance. | 10-17-2013 |
20130316075 | CATHODE FOR FUEL CELL HAVING TWO KINDS OF WATER-REPELLENCY AND METHOD OF PREPARING THE SAME AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL COMPRISING SAME - A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls a water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell. | 11-28-2013 |
20140023949 | Tri-Block Copolymer and Electrolyte Membrane Made from the Same - Provided are a tri-block copolymer and an electrolyte membrane prepared therefrom. The tri-block copolymer has a structure of polar moiety-containing copolymer block/non-polar moiety-containing copolymer block/polar moiety-containing copolymer block, or non-polar moiety-containing copolymer block/polar moiety-containing copolymer block/non-polar moiety-containing copolymer block, and is useful for an electrolyte membrane for fuel cells. The electrolyte membrane for fuel cells prepared from the tri-block copolymer exhibits superior dimensional stability and excellent fuel cell performance. | 01-23-2014 |
20140258814 | METHOD OF TRANSFERRING EXTRINSIC INFORMATION OF TURBO DECODER AND APPARATUS USING THE SAME - Disclosed herein is a method and apparatus for transferring extrinsic information of a turbo decoder. In the method of transferring the extrinsic information of the turbo decoder according to the present invention, Log-Likelihood Ratio (LLR) values for input bits of the turbo decoder are calculated. The LLR values are transferred as extrinsic information values. | 09-11-2014 |
20140363754 | POLYMER ELECTROLYTE COMPOSITION, ELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY AND FUEL CELL - Provided are a polymer electrolyte composition, an electrolyte membrane, a membrane electrolyte assembly, and a fuel cell. The polymer electrolyte composition according to an exemplary embodiment of this application includes a first solvent, a second solvent which is different from the first solvent, and a polymer which is reacted with the first solvent and the second solvent, in which the polymer includes a functional group which reacts with the first solvent by a first reaction energy and with the second solvent by a second reaction energy, and the second reaction energy is smaller than the first reaction energy. | 12-11-2014 |
Patent application number | Description | Published |
20090291609 | Method of manufacturing plasma display device and plasma display device made by this method - A method of manufacturing a plasma display device and a plasma display device made by this method are taught. In the plasma display device, the adhesion rate between a graphite layer and a plasma display panel is increased, therefore, the performance of the heat dissipation may be enhanced, the noises may be reduced, and the afterimages may be prevented, and the procedural steps of manufacture and the costs of making the graphite layer may be reduced. The method contemplates a first panel preparing step performed by preparing a first panel; a graphite layer forming step performed by coating a liquid graphite material on the first panel using a coating apparatus, and hardening the coated liquid graphite; and a chassis base adhering step performed by adhering a chassis base on the first panel with the chassis base facing to the graphite layer disposed on the plasma display panel. | 11-26-2009 |
20130164391 | COMPOSITION CONTAINING PRUNUS MUME EXTRACT FOR EXTERNAL APPLICATION TO SKIN - The present disclosure provides a composition for external application to the skin for skin care after laser treatment, which contains | 06-27-2013 |
20140005592 | COSMETIC DEVICE USING HIGH-FREQUENCY WAVES | 01-02-2014 |
20140331894 | WATER INSOLUBLE GEL COMPOSITION AND METHOD FOR PREPARING SAME - The present invention provides a method for preparing a water insoluble gel composition comprising: mixing a water soluble polysaccharide, an epoxy cross-linking agent, an alkaline compound and a solvent; and drying the thus obtained mixture at 1 to 30° C. under vacuum to remove the solvent, and a water insoluble gel composition. | 11-13-2014 |
Patent application number | Description | Published |
20090220841 | Membrane ELectrode Assembly Having Layer for Trapping Catalyst and Fuel Cell Employed With The Same - Disclosed herein are a membrane electrode assembly (MEA) for fuel cells, wherein the membrane electrode assembly has a porous membrane (a catalyst trapping layer) disposed at the opposite surface of a catalyst layer facing a polymer electrolyte membrane for preventing the loss of a catalyst, and a fuel cell including the same. The membrane electrode assembly has the effect of restraining the loss of the catalyst due to a liquid component, such as methanol, thereby improving the operating efficiency of the fuel cell. Especially, the membrane electrode assembly has the effect of minimizing the reduction in performance of the fuel cell due to the loss of the catalyst during the long-term operation. | 09-03-2009 |
20120235480 | UNINTERRUPTED POWER SUPPLY SYSTEM AND UNINTERRUPTED POWER SUPPLY DEVICE - An uninterruptible power supply (UPS) system includes a plurality of UPS devices configured to provide a single-phase AC input voltage to a load and a battery when an operating mode is a normal mode and configured to convert power of the battery into a single-phase AC output voltage to provide the single-phase AC output voltage to the load when the operation mode is a blackout mode. Each of the plurality of the UPS devices commonly receives the single-phase AC input voltage to commonly output the single-phase AC output voltage when a configuration mode is a single-phase parallel mode. At least three UPS devices independently receive each of a three-phase AC input voltage to output each of a three-phase AC output voltage when the configuration mode is a three-phase mode. | 09-20-2012 |
20130338000 | ELECTRODE CATALYST WITH IMPROVED LONGEVITY PROPERTIES AND FUEL CELL USING THE SAME - Disclosed is a method for preventing metal catalyst particles supported on a support and formed of a catalytically active metal or metal-containing alloy from coarsening, the method comprising: dispersing an anti-coarsening compound having a coarsening temperature higher than that of the metal catalyst, in at least one region selected from the group consisting of interstitial spaces among the metal catalyst particles and contact sites between the support and the metal catalyst particles. The electrode catalyst is structurally stable while not causing degradation of electrochemical quality, and thus can improve the longevity properties of a fuel cell. | 12-19-2013 |
20140106256 | Electrode Catalyst For Fuel Cell - Disclosed is an electrode catalyst comprising: (a) a support with a specific surface area of at least 1200 m | 04-17-2014 |
Patent application number | Description | Published |
20120329636 | BELT-SHAPED METAL NANOSTRUCTURE AND METHOD FOR PREPARING SAME - The present invention relates to a belt-shaped metal nanostructure in which a wide surface area of catalytically active material can be realized even by a relatively small amount thereof so that it shows an excellent catalytic activity, and a method for preparing same. | 12-27-2012 |
20130230790 | POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING THE SAME - Provided are a polymer electrolyte membrane for fuel cells, and a membrane electrode assembly and a fuel cell including the same. More specifically, provided is a polymer electrolyte membrane for fuel cells including a hydrocarbon-based cation exchange resin having hydrogen ion conductivity and fibrous nanoparticles having a hydrophilic group. By using the fibrous nanoparticles having a hydrophilic group in conjunction with the hydrocarbon-based cation exchange resin having hydrogen ion conductivity, it is possible to obtain a polymer electrolyte membrane for fuel cells that exhibits improved gas barrier properties and long-term resistance, without causing deterioration in performance of fuel cells, and a fuel cell including the polymer electrolyte membrane. | 09-05-2013 |
20140193741 | POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING THE SAME - Disclosed are a polymer electrolyte membrane for fuel cells and a membrane electrode assembly and fuel cell including the same. The polymer electrolyte membrane includes a fluorine-based cation exchange resin having proton conductivity and fibrous nanoparticles having a hydrophilic group. By using the fluorine-based cation exchange resin having proton conductivity and the fibrous nanoparticles having a hydrophilic group in combination, performance of a fuel cell including the polymer electrolyte membrane is not deteriorated and the polymer electrolyte membrane prevents gases from permeating thereinto and has enhanced durability for extended use. A fuel cell including the above-described polymer electrolyte membrane is provided. | 07-10-2014 |