| Patent application number | Description | Published |
|---|
| 20080248372 | FUEL CELL CATALYST, METHOD OF PREPARING SAME, AND MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL AND FUEL CELL SYSTEM INCLUDING SAME - A fuel cell catalyst includes a platinum-iron (Pt—Fe) alloy having an ordered or disordered face-centered cubic structure or face-centered tetragonal structure. The face-centered cubic structure has a lattice constant ranging from about 3.820 Å to about 3.899 Å (or from about 3.862 Å to about 3.880 Å), and the face-centered tetragonal structure has a first lattice constant ranging from about 3.800 Å to about 3.880 Å (or from about 3.810 Å to about 3.870 Å) and a second lattice constant ranging from about 3.700 Å to about 3.810 Å (or from about 3.710 Å to about 3.800 Å). A membrane-electrode assembly can improve cell performance by including the above catalyst having the relatively high activity and selectivity for an oxidant reduction in at least one of an anode or a cathode, and can increase lifespan by inhibiting catalyst poisoning. | 10-09-2008 |
| 20100330453 | POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL SYSTEM AND MANUFACTURING METHOD THEREOF - A polymer electrolyte membrane for a fuel cell has a crystalline fusion enthalpy measured by differential scanning calorimetry (DSC) of about 67.3 J/g or more. Such crystallinity improves dimensional stability, mechanical characteristics, and ion conductivity of the polymer electrolyte membrane. | 12-30-2010 |
| 20110053029 | MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL AND FUEL CELL STACK - A membrane electrode assembly for a fuel cell that secures a flow path of a separator while preventing generation of a pin-hole. The membrane electrode assembly includes an electrolyte membrane for a fuel cell, a microporous layer that is disposed at both surfaces of the electrolyte membrane, a backing layer that is disposed on the microporous layer, and a circumferential edge protective layer that is disposed at an circumferential edge of the electrolyte membrane. An end portion of the microporous layer is positioned further inside of the membrane electrode assembly than an end portion of the backing layer. The circumferential edge protective layer is inserted between the backing layer and the electrolyte membrane. | 03-03-2011 |
| Patent application number | Description | Published |
|---|
| 20080223712 | Method of preparing metal nanoparticles - A method of manufacturing metal nanoparticles by mixing a metal precursor with a solvent to prepare a mixed solution, and radiating the mixed solution with an ion beam to reduce the metal precursor and produce the metal nanoparticles. In addition, when metal nanoparticles are prepared by using an ion beam, uniform-sized metal nanoparticles can be mass produced. | 09-18-2008 |
| 20080277844 | Reactor for producing metal nanoparticles and arrangement having the reactor - An arrangement producing metal nanoparticles includes a γ-ray irradiator installed in a radioactive shielding room, a reactor that is disposed to oppose the γ-ray irradiator, and a power supply installed outside the radioactive shielding room to supply power to the reactor. The reactor includes a container receiving reaction materials and transmitting the energy of γ-rays to reaction materials arranged inside of the reactor, an agitator that is installed in the container to be capable of rotating, and a driving source for receiving the power from the power supply to drive the agitator. | 11-13-2008 |
| 20080318106 | Catalyst for a cathode of a mixed reactant fuel cell, membrane-electrode assembly for a mixed reactant fuel cell including the same, and mixed reactant fuel cell system including the same - The cathode catalyst for a mixed reactant fuel cell includes a mixed catalyst that includes a first catalyst including a Ru—Ch1 compound where Ch1 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof, and a second catalyst including a Pt—Ch2 compound where Ch2 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst can improve excellent power characteristics of a fuel cell due to excellent catalyst activity and selectivity. | 12-25-2008 |
| 20090136808 | Porous carbon structure, method for preparing same, electrode catalyst for fuel cell, and electrode and membrane-electrode assembly including same - The porous carbon structure according to one embodiment of the present invention includes mesopores, and at least two kinds of macropores having different average pore diameters. The porous carbon structure includes inter-connected pores and thereby increases specific surface area and improves electronic conductivity. | 05-28-2009 |
| 20090136816 | HOLLOW CAPSULE STRUCTURE AND METHOD OF PREPARING THE SAME - A hollow capsule structure and a method of preparing the same are disclosed. The hollow capsule structure may include a shell with nanopores. The nanopores may be spherical nanopores. The hollow capsule structure may include pores connected to one another with excellent electronic conductivity and a large specific surface area. In addition, the hollow capsule structure may be configured to can easily transfer mass due to a capillary phenomenon of the nanopores in the shell. As a result, the hollow capsule structure may be configured for use with a catalyst supporter, a supporter for growing carbon nanotubes, an active material, a conductive agent, a separator, a deodorizer, a purifier, an adsorption agent, a material for a display emitter layer, a filter and the like. | 05-28-2009 |
| 20100227244 | MEMBRANE-ELECTRODE ASSEMBLY FOR FUEL CELL AND FUEL CELL STACK WITH THE SAME - A membrane-electrode assembly (MEA) for a fuel cell includes a fuel cell electrolyte membrane, an anode disposed at a first side of the electrolyte membrane, and a cathode disposed at a second side of the electrolyte membrane, wherein the cathode has a thickness and an area, the cathode area extending in a plane substantially parallel to a major surface of the electrolyte membrane, the cathode area includes a central area and a peripheral area, the peripheral area extending to lateral edges of the cathode, the central area includes hydrophilic portions and hydrophobic portions, the peripheral area includes hydrophilic portions and hydrophobic portions, and the central area is more hydrophobic than the peripheral area. | 09-09-2010 |
| 20100310950 | Catalyst for fuel cell, ful cell systems including the same, and associated methods - A catalyst for a fuel cell, a fuel cell system including the same, and associated methods, the catalyst including a platinum-metal alloy having a face-centered tetragonal structure, and a carrier, wherein the platinum-metal alloy shows a broad peak or a peak having two split tips at a 2θ of about 65 to about 75 degrees in an XRD pattern using a Cu—K α line, and the platinum-metal alloy is supported in the carrier and has an average particle size of about 1.5 to about 5 nm. | 12-09-2010 |
