Patent application number | Description | Published |
20100104915 | FUEL CELL COMPRISING OXYGEN ELECTRODE WITH SURFACE NANOSTRUCTURE - The present invention is aimed to realize, in a fuel cell with an oxygen electrode (a catalytic electrode), both catalytic function and immobilization of the catalyst nanoparticles when the catalyst nanoparticles are very small nanoparticles in the size of 1-3 nm. | 04-29-2010 |
20100239951 | FUEL CELL COMPRISING OXYGEN ELECTRODE WITH SURFACE NANOSTRUCTURE - An oxygen electrode used in the fuel cell and includes a plurality of carbon particles, a carbon thin-film, and surface nanostructure. The carbon particles are bonded to one another with the carbon thin-film, and the surface nanostructure is formed on the surface of the carbon thin-film. The surface nanostructure comprises catalyst nanoparticles made of platinum (Pt) and carbon nanoparticles. According to this combination of these elements, the catalyst nanoparticles are confined within three-dimensional structure to be formed by the carbon nanoparticles and are immobilized without losing space which allows any reactant to be accessed to the surface of the catalyst nanoparticles. | 09-23-2010 |
20110250526 | METHOD FOR FABRICATING A POLYMER ELECTROLYTE MEMBRANE FOR A FUEL CELL - In order to significantly improve power generation efficiencies for the fuel cells, the present invention provides a method for fabricating a polymer electrolyte membrane comprising a surface with an array of a plurality of fine convex portion with a depth of not less than 3 μm and not more than 12 μm and an aspect ratio of not less than 0.4 and not more than 2.0, | 10-13-2011 |
20120135320 | MANUFACTURING METHOD OF CATHODE ELECTRODE FOR FUEL CELLS AND CATHODE ELECTRODE FOR FUEL CELLS - A manufacturing method for a cathode electrode including: (1) mixing a polymerizable electrolyte precursor having an alkylsulfonic acid group and a group represented by (R | 05-31-2012 |
20120189924 | METHOD OF OPERATING POLYMER ELECTROLYTE FUEL CELL - A polymer electrolyte fuel cell includes a cathode, an anode, and an electrolyte membrane sandwiched between the cathode and the anode. A plurality of projections each having a height of 5 to 15 μm or a plurality of depressions each having a depth of 5 to 15 μm are formed on a surface of the electrolyte membrane, the surface being opposed to the cathode. The cathode is constituted by a catalyst layer formed to tightly contact the surface of the electrolyte membrane and having a maximum thickness that is one to three times the height of the projection or the depth of the depression. An oxygen-containing gas having a relative humidity of 10% or less is supplied to the cathode, and electric power is generated by using the polymer electrolyte fuel cell. | 07-26-2012 |
20140048542 | WATER STORAGE STRUCTURE - A water storage structure includes an impermeable layer including a plurality of hydrophobic particles, a water retentive layer provided on the impermeable layer and capable of holding a predetermined volume of liquid, and a pavement layer provided on the water retentive layer and including a tube penetrating from a first surface to a second surface. | 02-20-2014 |
20140334877 | WATER COLLECTING STRUCTURE - A water repellent sand layer that is made of water repellent sand and serves as a water shield layer is provided to be slanted between upper and lower soil layers, a water conveying belt portion is provided to include at least one or both of gravel and a culvert that are provided between the water repellent sand layer and the upper soil layer, and a water shield wall is provided at a slant downstream side. Water falling and permeating from a ground surface into the soil layer is blocked by the water repellent sand layer, flows downward in the water conveying belt portion located above the water repellent sand layer to the slant downstream side, and is blocked by the water shield wall at the slant downstream side, so that the collected water is recovered from a drain hole in the culvert that penetrates the water shield wall. | 11-13-2014 |
20150047966 | DESALINATION APPARATUS AND DESALINATION METHOD - The desalination apparatus according to the present disclosure includes: a water-repellent particle layer that is located below a water tank, contains water-repellent particles, and allows passage of water vapor generated by evaporation of the liquid stored in the water tank, the water tank being a space for storing the liquid; and a liquefying layer that is located below the water-repellent particle layer, and liquefies the water vapor that has passed through the water-repellent particle layer to obtain the fresh water. The water-repellent particle layer includes an anti-migration layer provided as a surface layer that faces the water tank and containing anti-migration particles. Each of the anti-migration particles has a higher aspect ratio than the water-repellent particles, the aspect ratio being a value obtained by dividing a length in a major axis direction by a length in a minor axis direction. | 02-19-2015 |
20150060260 | DESALINATION SYSTEM AND DESALINATION METHOD - A desalination system, etc. of the present disclosure includes: a water tank; a water-repellent particle layer that is located below the water tank and contains a plurality of water-repellent particles; a liquefying layer that is located below the water-repellent particle layer and liquefies water vapor that has passed through the water-repellent particle layer, to obtain fresh water; an introduction channel of a liquid supply channel that supplies a liquid to the water tank; and a liquid speed reduction part that is located on the introduction channel of the supply channel, and includes a wall surface crossing a flow direction of the liquid in the supply channel, for reducing a flow speed of the liquid. | 03-05-2015 |
20150075965 | WATER AMOUNT CONTROLLING METHOD AND DESALINATION SYSTEM - A water amount controlling method according to the present disclosure includes: opening a discharge valve that discharges a liquid from a water tank if an impurity concentration is higher than or equal to a first reference value, and opening a sluice gate that introduces the liquid to the water tank a predetermined period after opening the discharge valve, the first reference value being lower than a saturation concentration; throttling the discharge valve and the sluice gate if the impurity concentration is higher than or equal to a second reference value and the temperature is lower than or equal to a third reference value, the second reference value being lower than the first reference value; and closing the discharge valve if the impurity concentration is lower than the second reference value, and closing the sluice gate a predetermined period after closing the discharge valve. | 03-19-2015 |
20150075966 | DESALINATION APPARATUS AND DESALINATION METHOD - A desalination apparatus according to one aspect of the present disclosure obtains fresh water from a liquid. The desalination apparatus includes: a water-repellent particle layer that is located below a water tank, contains water-repellent particles, and allows passage of water vapor generated by evaporation of the liquid stored in the water tank, the water tank being a space for storing the liquid; and a liquefying layer that is located below the water-repellent particle layer, and liquefies the water vapor that has passed through the water-repellent particle layer to obtain the fresh water. The water-repellent particle layer includes: a first layer that contains first water-repellent particles among the water-repellent particles, and faces the water tank; and a second layer that contains second water-repellent particles among the water-repellent particles, and is provided below the first layer. The second water-repellent particles have a larger average particle size than the first water-repellent particles. | 03-19-2015 |