Patent application number | Description | Published |
20090005237 | Method for preparing the mixed electrode catalyst materials for a PEM fuel cell - The present invention relates to a process for preparing electrode catalyst materials for a polymer electrolyte membrane fuel cell (PEMFC), and particularly to a high-performance platinum-non-platinum mixed electrode catalyst (Pt—RuOs/C) having a physically mixed structure of RuOs alloy and platinum materials, which is prepared by adding a small amount of platinum (Pt) to RuOs alloy materials highly dispersed on a carbon support, where the amount of platinum used is drastically reduced as compared to the conventional platinum materials, thus lowering the manufacturing cost. | 01-01-2009 |
20090041653 | Method for the preparation of porous graphite carbon with high crystallinity using sucrose as a carbon precursor - The present invention relates to a process for preparing a porous graphite carbon with high crystallinity, which comprises the steps of: (a) hydrothermally treating sucrose (i.e. carbon precursor), transitional metal precursor and uniform-sized silica particles at the same time to prepare a polymer; and (b) carbonizing the polymer, which can provide a porous graphite carbon with remarkably improved crystallinity suitable for a catalyst support for a fuel cell. | 02-12-2009 |
20090208848 | Polymer blend electrolyte membrane for use at high temperature and manufacturing method thereof - The present invention relates to a polymer blend electrolyte membrane comprising an inorganic polymer having polydimethylsiloxane as a main chain, which has a pore structure at both ends formed by condensation reaction between 3-aminopropyltriethoxysilane and tetraethylorthosilicate, wherein phosphoric acid is chemically linked to an amino group of the pore structure; and a proton-conducting polymer having a cation exchange group at the side chain thereof, as well as a manufacturing method thereof. Generally, proton-conducting electrolyte membranes have significantly reduced ion conductivity at high temperatures. However, proton-conducting electrolyte membranes have advantages in terms of efficiency and cost, and thus it is needed to develop an electrolyte membrane, which has excellent ion conductivity even at high temperature. Accordingly, the present invention aims to provide a polymer blend electrolyte membrane for use at high temperature and a manufacturing method thereof. | 08-20-2009 |
20100086450 | METHOD AND APPARATUS FOR PREPARING CATALYST SLURRY FOR FUEL CELLS - The present invention relates to a method and apparatus for preparing a catalyst slurry for fuel cells, in which nano-sized catalyst particles are dispersed uniformly at a high concentration and the adsorption force between the catalyst and ionomer is maximized. The resulting catalyst slurry is suitable for the manufacture of a membrane-electrode assembly (MEA) of a polymer electrolyte (or proton exchange) membrane fuel cell (PEMFC). | 04-08-2010 |
20100086821 | ELECTRODE FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL, MEMBRANE-ELECTRODE ASSEMBLY, AND METHODS FOR MANUFACTURING THE SAME - The present invention provides a method for manufacturing a membrane-electrode assembly (MEA) which is a core element of a polymer electrolyte membrane fuel cell for a vehicle and an electrode therefor. The method for manufacturing an MEA of the present invention is implemented to provide a highly-concentrated catalyst slurry which is uniformly dispersed, compared to conventional catalyst slurries, by a catalyst slurry manufacturing process including a vacuum defoaming process. | 04-08-2010 |
20100087309 | METHOD AND APPARATUS FOR PREPARING CATALYST SLURRY FOR FUEL CELLS - The present invention relates to a method and apparatus for preparing a catalyst slurry for fuel cells, in which nano-sized catalyst particles are dispersed uniformly at a high concentration and the adsorption force between the catalyst and ionomer is maximized. The resulting catalyst slurry is suitable for the manufacture of a membrane-electrode assembly (MEA) of a polymer electrolyte (or proton exchange) membrane fuel cell (PEMFC). | 04-08-2010 |
20110053051 | ELECTRODE CATALYST COMPOSITION FOR FUEL CELL AND METHOD OF MANUFACTURING THE SAME - The present invention provides an electrode binder for a polymer electrolyte membrane fuel cell which includes a hydrocarbon-based polymer and a water-soluble polymer acting as a porogen, a porous hydrocarbon-based electrode catalyst layer including the electrode binder, and a method of manufacturing the same. Because of the use of the porogen, the pore size and porosity of the hydrocarbon-based binder catalyst layer are optimized, and bondability of a hydrocarbon-based membrane electrode assembly is enhanced. The present invention also features a fuel cell manufactured using the porogen. | 03-03-2011 |
20110104588 | METHOD OF PREPARING NANO-SIZED CATALYST ON CARBON SUPPORT - The present invention provides a method of synthesizing a nano-sized transition metal catalyst on a carbon support, including dissolving a stabilizer in ethanol thus preparing a mixture solution, adding a support to the mixture solution thus preparing a dispersion solution, dissolving a transition metal precursor in ethanol thus preparing a precursor solution, mixing the precursor solution with the dispersion solution with stirring, and then performing reduction, thus preparing the nano-sized transition metal catalyst. This method enables the synthesis of transition metal nanoparticles supported on carbon powder having a narrow particle size distribution and a wide degree of dispersion through a simple process, and is thus usefully applied to the formation of an electrode material or the like of a fuel cell. | 05-05-2011 |
20110118111 | PREPARATION METHOD FOR PtCo NANOCUBE CATALYST - The present invention features a method for preparing a PtCo nanocube catalyst, the method comprising dissolving a platinum (Pt) precursor, a cobalt (Co) precursor, a surface stabilizer and a reducing agent in a solvent to prepare a solution; heating the solution under an inert gas atmosphere; maintaining the temperature of the solution to obtain PtCo alloy nanocubes; adsorbing the PtCo alloy nanocubes on a carbon support to obtain a catalyst; and removing the surface stabilizer from the catalyst. The disclosed method for preparing a PtCo nanocube catalyst enables preparation of nanocubes with uniform size and cubic shape through a simple process and application for development of high-efficiency fuel cells by preventing change in shape, surface area and composition caused by agglomeration of the nanocubes. | 05-19-2011 |
20110123908 | METHOD FOR PREPARING NANO-SIZED METAL PARTICLES ON A CARBON SUPPORT - Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells. | 05-26-2011 |
20110129759 | ELECTRODE FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR FORMING MEMBRANE-ELECTRODE ASSEMBLY USING THE SAME - The present invention provides an electrode for a polymer electrolyte membrane fuel cell (PEMFC) and a method for forming a membrane-electrode assembly (MEA) using the same, in which carbon nanofibers are added to a catalyst layer to increase the mechanical strength of the catalyst layer and to maintain the thickness of the catalyst layer after operation for a long time, thus preventing a reduction in physical durability of the fuel cell, and cerium-zirconium oxide (CeZrO | 06-02-2011 |
20110136041 | SULFONATED POLY(ARYLENE ETHER) COPOLYMERS AND RELATED POLYMER ELECTROLYTE MEMBRANES AND FUEL CELLS - The present invention relates to a sulfonated poly(arylene ether) copolymer, a manufacturing method thereof and a polymer electrolyte membrane for fuel cell using the same. | 06-09-2011 |
20110201756 | NOVEL AMPHIPHILIC BLOCK COPOLYMER, METHOD FOR MANUFACTURING THE SAME, AND POLYMER ELECTROLYTE MEMBRANE USING THE SAME - The present invention provides an amphiphilic block copolymer, a method for manufacturing the same, and a fuel cell membrane using the same. According to preferred embodiments, the amphiphilic block copolymer may contain poly(arylene sulfone ether ketone) (PSEK) as a hydrophobic component and poly(sulfonated styrene-co-acrylonitrile) (PSSAN) as a hydrophilic component. According to other preferred embodiments, polymer electrolyte membrane manufactured using the amphiphilic block copolymer has certain advantages in that the hydrogen ion conductivity is not reduced even at a high temperature of more than 100° C. but is rather increased and the thermal and chemical dimensional stability is excellent. | 08-18-2011 |
20120016043 | POLY(ARYLENE ETHER) COPOLYMER HAVING CATION-EXCHANGE GROUP, PROCESS OF MANUFACTURING THE SAME, AND USE THEREOF - The present invention relates to a poly(arylene ether) copolymer having an ion exchange group, particularly a positive ion exchange group, a method for manufacturing the same, and use thereof. In the poly(arylene ether) copolymer having the ion exchange group according to the present invention, physical characteristics, ion exchanging ability, metal ion adsorption ability and a proccessability are excellent, and thus the copolymer can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins. | 01-19-2012 |
20120028790 | NON-PLATINUM OXYGEN REDUCTION CATALYSTS FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR PREPARING THE SAME - Provided are a non-platinum oxygen reduction catalyst for a polymer electrolyte membrane fuel cell and a method for preparing the same. More particularly, an oxygen reduction catalyst in which chelated cobalt is impregnated on a conductive polymer coated on a carbon support and a method for preparing the oxygen reduction catalyst by coating a conductive polymer on a carbon support, impregnating chelated cobalt on the conductive polymer and then treating the same with heat and an acid are disclosed. The platinum-free oxygen reduction catalyst of the present invention has superior oxygen reduction activity and durability with high proportion of pyridinic and graphitic nitrogens on the catalyst surface, and thus can be usefully applied for a polymer electrolyte membrane fuel cell. | 02-02-2012 |
20120142790 | POLY(ARYLENE ETHER) COPOLYMER HAVING CATION-EXCHANGE GROUP, PROCESS OF MANUFACTURING THE SAME, AND USE THEREOF - The present invention relates to a poly(arylene ether) copolymer having a cation exchange group, a method for manufacturing the same, and use thereof. The poly(arylene ether) copolymer having the cation exchange group according to the present invention has excellent physical characteristics, ion exchanging capacity, metal ion adsorption capacity and a processability, and thus can be molded in various shapes and can be extensively applied to various fields such as recovering of organic metal, air purification, catalysts, water treatment, medical fields and separating of proteins. | 06-07-2012 |
20120148935 | MANUFACTURING METHOD OF MEMBRANE-ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL - The present invention provides a method of fabricating a membrane-electrode assembly for a polymer electrolyte membrane fuel cell, and a membrane-electrode assembly and a polymer electrolyte membrane fuel cell formed thereby. In the method, a 3-layered membrane-electrode assembly is formed in which a catalyst electrode layer is disposed on both surfaces of a polymer electrolyte membrane. A sub-gasket having an opening therein and having a primer layer formed on one surface thereof is formed, and is attached on both surfaces of the 3-layered membrane-electrode assembly such that the surface of the sub-gasket having the primer layer formed thereon faces the outside (is exposed) and the catalyst electrode layer is exposed through the opening. A 7-layered membrane-electrode assembly is then formed by stacking a gas diffusion layer on the primer layer exposed on both surfaces of the 5-layered membrane-electrode assembly to cover the catalyst electrode layer, and then performing a hot-pressing process to attach the sub-gasket and the gas diffusion layer to each other via the primer layer. | 06-14-2012 |
20120244457 | FUEL CELL ELECTRODE - The present invention provides an electrode for a polymer electrolyte membrane fuel cell. In one embodiment, a planar nanoporous or microporous metal foam or metal aerogel structure is provided, from which an electrode with a catalyst layer integrally formed by fixing a catalyst in the metal foam or metal aerogel is formed. | 09-27-2012 |
20120309857 | POLYARYLENE-BASED POLYMER, PREPARATION METHOD FOR THE SAME, AND POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL USING THE POLYMER - Disclosed herein is a polyarylene-based polymer, a preparation method for the same, and a polymer electrolyte membrane for fuel cell using the polymer. The polyarylene-based polymer, which is designed to have long side chains of a hydrophilic moiety and dense sulfonic acid groups, may improve the formation of ion channels when fabricating a polymer membrane and also ensures good chemical stability of the hydrophilic moiety and good dimensional stability against water. Further, the preparation method of the present invention simplifies production of the polymer, and polymer electrolyte membranes using the polymer exhibits improved properties as a polymer electrolyte membrane for a fuel cell, such as high proton conductivity, even under an atmosphere of low water uptake, and good dimensional stability against a long-term exposure to water. | 12-06-2012 |
20130266890 | SULFONATED POLY(PHENYLENE SULFIDE SULFONE NITRILE) AND MEMBRANE FOR FUEL CELL THEREOF - The present invention provides sulfonated poly(phenylene sulfide sulfone nitrile) and a polymer electrolyte membrane thereof. In particular, the present invention provides sulfonated poly(phenylene sulfide sulfone nitrile) having a triple bond at its both ends and a polymer electrolyte membrane with superior mechanical properties prepared by heating sulfonated poly(phenylene sulfide sulfone nitrile) and forming cross-links between ends of sulfonated poly(phenylene sulfide sulfone nitrile). | 10-10-2013 |
20140024729 | POLYMER ELECTROLYTE MEMBRANE CHEMICALLY BONDED WITH IONIC LIQUID AND FUEL CELL USING THE SAME - The present disclosure provides a polymer electrolyte membrane chemically bonded with an ionic liquid. More particularly, the present disclosure provides a polymer electrolyte membrane chemically bonded with an ionic liquid by reacting the ionic liquid with a novel polymer chain terminal. The polymer electrolyte membrane described herein has a high hydrogen ionic conductivity, even in a high-temperature and anhydrous environment. Additionally, the membrane displays electro-chemical and thermal stability. Moreover, the polymer electrolyte membrane may also be applied to a high-temperature and dry-out bio fuel cell. | 01-23-2014 |
20140329162 | MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL - A membrane electrode assembly for a fuel cell is provided that includes a membrane, electrodes on both sides of the membrane, respectively, and sub-gaskets bonded to the edges of the electrodes, respectively. In particular, the sub-gasket may be bonded to the membrane at a predetermined distance from the edge of the electrode. | 11-06-2014 |