Abstract: A fuel cell endplate to be combined with a membrane/electrode assembly comprising a high-polymer electrolytic membrane and electrodes sandwiching the membrane; which comprises a resin substrate, a collector plate and a gasket; the collector plate being in contact with the surface of the resin substrate and the membrane/electrode assembly; the gasket being provided so as to surround the periphery of the collector plate; a terminal connector connected to the collector plate and being disposed at a position where it does not contact with the membrane/electrode assembly.

Abstract: A dehydrogenation fuel theft prevention system for preventing the theft of dehydrogenation organic fuel containing hydrogen is provided. The dehydrogenation fuel theft prevention system is for systems including a reformer for dehydrogenating organic fuel containing at least hydrogen and a dehydrogenation fuel recovery tank for storing dehydrogenation fuel produced when organic fuel is dehydrogenated in the reformer. The theft prevention system is provided with a means for mixing an odorant as a component with a pungent odor other than the fuel components or a agent for coagulating the fuel components. The odorant or the coagulating agent is mixed when fuel is manufactured, distributed, utilized, recovered, or stored or fuel is about to be stolen.

Abstract: A fuel supply and collection system comprising: a delivery vehicle having a supply-fuel tank, a collection-fuel tank, a remaining supply-fuel quantity sensor for detecting a remaining fuel quantity of the supply-fuel tank, a remaining collection-fuel quantity sensor for detecting a remaining fuel quantity of the collection-fuel tank, and a display unit; a plurality of fuel stations having a supply-fuel tank, a collection-fuel tank, a remaining supply-fuel quantity sensor for detecting a remaining fuel quantity of the supply-fuel tank, and a remaining collection-fuel quantity sensor for detecting a remaining fuel quantity of the collection-fuel tank; and a central information processing center having an information processing apparatus; wherein, the remaining supply-fuel and collection-fuel quantities of the delivery vehicle and the remaining supply-fuel and collection-fuel quantities of each fuel station are estimated in the information processing apparatus from remaining supply-fuel quantity data and rema

Abstract: An engine system in which either hydrogen produced from a hydrogen containing medium in terms of reaction using a catalyst or a mixture of the hydrogen and the hydrogen containing medium is employed as a fuel, in order to restrict heat deformation of a reactor, the engine system including a reactor configured to cause a reaction using a catalyst, in which the reactor is constituted by alternately disposing plural exhaust passages and plural fuel passageways of the engine system with a wall interposed therebetween; at least one carrier configured to carry the catalyst and to be formed in a substantially rectangular plate shape is fitted in at least one of fuel passageways; and the carrier is provided with a plate portion which has a surface disposed in a fuel flowing direction and is formed in a substantially rectangular plate shape and at least one slit portion which divides the surface of the plate portion in the fuel flowing direction.

Abstract: An alkylenesulfonic group and/or an alkylenesulfo-ether group is introduced as an ionic conductivity-imparting group into a polyazole such as a polyimidazole, a polyoxazole, or a polythiazole each having good resistance to oxidation. The resulting polymer yields an electrolyte, an electrolyte membrane, and a membrane electrode assembly which are available at low cost, contains ionic conductivity-imparting groups stable over extended periods of time and satisfactorily resistant to oxidative degradation. This enables long-term continuous use of mobile cell power sources, dispersed cell power sources, and cell power sources for mobile units.

Abstract: An object of the invention is to provide an electrode, for a fuel cell, exhibiting high performance stably for a long term by removing the effect of dew condensation water remaining inside a slit of a cathode end plate by humidity-adjustment, and maintaining the wettability of a catalyst layer or a gas diffusion layer into an appropriate state; a polymeric electrolyte type fuel cell and a liquid fuel cell using the electrode; and an information electronic device mounting these fuel cells.

Abstract: A fuel cell comprises a fuel vessel, a unit cell, a fuel transport member. The fuel vessel is formed with a fuel chamber section for retaining a liquid fuel and a fuel tank section for supply the fuel to the fuel chamber section. The unit cell is placed on the fuel chamber section so that the fuel is fed from the fuel chamber section. The fuel transport member has first pores for retaining the fuel by a capillary attraction and second pores allowing the passage of a gas by not retaining the fuel. The fuel transport is placed in the fuel chamber section. A fuel-gas exchange section is provided between the fuel chamber section and the fuel tank section to lead the gas in the fuel chamber into the fuel tank section and to lead the fuel in the fuel tank section into the fuel chamber section. A vent hole is provided to a wall of the fuel chamber section to exhaust the gas in the fuel chamber section.

Abstract: A fuel cartridge is applicable to the fuel cell comprising an anode, a cathode, a polymer electrolyte membrane and a fuel wicking structure for feeding liquid fuel to the anode. The fuel cartridge comprises a fuel container and a porous fuel transport wick. The porous fuel transport for transporting the liquid fuel to the fuel cell, is incorporated in the fuel container. The fuel cartridge is configured to feed the liquid fuel stored in the cartridge to the fuel cell through the porous fuel transport wick, with assist of the negative capillary attraction which occurs in the fuel wicking structure depending on fuel consumption at the anode.

Abstract: a passive type fuel cell is comprised of an anode for oxidizing a liquid fuel, a cathode for reducing oxygen, a solid polymer electrolytic membrane interposed between the anode and the cathode, a current-collector for collecting extract electrons accompanying the power generating reaction from the anode, a first porous material to supply the fuel to the anode, and a second porous member for feeding the fuel to the first porous member. The solid polymer electrolytic membrane, the anode, the current-collector, the first porous member, and the second porous member are layered in the above-listed order. The pore diameter of the first porous material is made smaller than that of the second porous material.

Abstract: The present invention provides a fuel cell having an anode to oxidize liquid fuel, a cathode to reduce oxygen, and a solid polymer electrolyte membrane formed between said anode and said cathode, wherein: a porous body, which faces the porous anode, having continuous micro pores which form a liquid fuel feed channel by capillary force and continuous micro pores which do not have liquid retentivity is used; and the liquid fuel is supplied by the capillary negative pressure generated at the anode.

Abstract: a fuel cell uses a liquid fuel and comprises an anode for oxidizing the fuel, a cathode for deoxidizing oxygen, and a proton-conductive solid polymer membrane interposed between the anode and the cathode. a fuel carrier is arranged so as to be in contact with one side of the anode; the one side is opposite to another side being in contact with the proton-conductive solid polymer membrane; the fuel carrier is configured to transport the fuel to the anode, allow the passage of carbon dioxide gas produced at the anode, and have a current-collecting function; and the fuel carrier is provided with an electrode terminal connector part.

Abstract: A fuel cell that uses a liquid fuel and comprises an anode for oxidizing the fuel, a cathode for deoxidizing oxygen, and a proton-conductive solid polymer membrane interposed between the anode and the cathode. Further the fuel sell comprises a fuel carrier which has a flow path for transporting the fuel to the anode and another flow path for allowing the passage of gas. The fuel carrier is arranged on one side of the anode, said one side being opposite to another side provided with the proton-conductive solid polymer membrane.

Abstract: Provided is a fuel cell having a membrane electrode assembly for generating power by oxidizing fuel at an anode electrode and reducing oxygen at a cathode electrode, an anode diffusion layer for allowing fuel to pass therethrough to the outside of the anode electrode of the membrane electrode assembly and transferring electrons generated by the oxidation, a cathode diffusion layer for removing water thus generated and transferring electrons to be used for the reduction to the lo outside of the cathode electrode, an anode current collector and anode endplate for transferring electrons generated by the oxidation to the outside of the anode diffusion layer, and a cathode current collector and a cathode endplate for transferring electrons to be used for the reduction to the outside of the cathode diffusion layer. The anode endplate or anode current collecting layer is hydrophilic or the end plate on the anode side has a constitution promoting discharge of a gas generated by the reaction.

Abstract: It is an object to provide a fuel cell power system which can produce an output stably for extended periods without sensing or estimating and controlling fuel concentration. The fuel cell power system is equipped with a plurality of electrically connected single cells running on a liquid fuel, each having an anode for oxidizing a fuel supplied to the cells and cathode for reducing oxygen with an electrolyte membrane in-between, wherein the fuel concentration is kept at a constant level by virtue of well balanced associated water, fuel cross-over and the like to produce an output stably for extended periods when the electrolyte membrane has a liquid fuel permeability of 70 mA/cm2 or less and a make-up liquid fuel has a concentration of 15% by weight or more.

Abstract: A fuel cell endplate to be combined with a membrane/electrode assembly comprising a high-polymer electrolytic membrane and electrodes sandwiching the membrane; which comprises a resin substrate, a collector plate and a gasket; the collector plate being in contact with the surface of the resin substrate and the membrane/electrode assembly; the gasket being provided so as to surround the periphery of the collector plate; a terminal connector connected to the collector plate and being disposed at a position where it does not contact with the membrane/electrode assembly.

Abstract: It is an object of this invention to provide a high-performance membrane electrode assembly high in adhesiveness to proton-conductive aromatic polymer membrane, low in interfacial resistance and high in voltage-current performance, and a fuel cell using the same. This invention consists in a membrane electrode assembly equipped with an anode electrode having a catalyst layer on one side surface of a proton-conductive aromatic polymer membrane and a cathode electrode on the other side surface of the membrane, wherein said catalyst layer has a catalyst and a ?-conjugated aromatic polymer having ion exchanging groups on side chains thereof.

Abstract: The present invention provides an electrolyte membrane for a fuel cell that has a minute projection cluster on one side or both sides of a polymer electrolyte membrane. Further, the present invention provides a production method of an electrolyte membrane for a fuel cell, wherein a mold comprising convex portions having a fixed planar pattern is pressed on one side or both sides of a polymer electrolyte membrane, then while concave portions of the polymer electrolyte membrane formed in the concave portions are being stretched, the mold is removed from the polymer electrolyte membrane for forming a minute projection cluster.

Abstract: An object of the present invention is to provide a fuel cell having a structure capable of generating a large cell output power. According to the present invention, there is provided a fuel cell including an anode for oxidizing liquid fuel, a cathode for reducing oxygen, an electrolyte membrane provided between the above described anode and the above described cathode, a fuel chamber for storing liquid fuel to be fed to the above described anode, and a unit for ventilating between the outside and the inside of the fuel chamber and for blocking liquid, wherein the pressure inside the fuel chamber is higher than the pressure outside the fuel chamber.

Abstract: An object of the present invention is to provide a fuel cell having a structure capable of generating a large cell output power. According to the present invention, there is provided a fuel cell including an anode for oxidizing liquid fuel, a cathode for reducing oxygen, an electrolyte membrane provided between the above described anode and the above described cathode, a fuel chamber for holding liquid fuel to be fed to the anode, an exhaust gas module having a gas-liquid separation function arranged so as to permit ventilation between the inside and the outside of the fuel chamber.

Abstract: An aqueous solution fuel is fed to a fuel cell by using a propellant gas composed of a pressure has or pressure-liquefied gas. The aqueous solution fuel and the propellant gas are held in an exchangeable fuel cartridge. An ejector for ejecting the aqueous solution fuel from the fuel cartridge to the fuel cell with the propellant gas is provided at the side of the fuel cartridge or at the side of the fuel cell.