Abstract: A fuel cartridge to be connected to a direct methanol fuel cell power generating device includes a spare fuel tank which stores a liquid fuel and is to be connected to the direct methanol fuel cell power generating device and a harmful substance trap member. The spare fuel tank stores a liquid fuel and is to be connected to the direct methanol fuel cell power generating device. The harmful substance trap member is fixed to the spare fuel tank and is to be connected to the direct methanol fuel cell power generating device. The harmful substance trap member contains a harmful substance trap material which traps gaseous harmful substances exhausted from the direct methanol fuel cell power generating device.

Abstract: The invention provides a fuel cartridge for supplying methanol aqueous solution to a direct methanol fuel cell system, comprising a memory which stores at least a concentration of the methanol aqueous solution.

Abstract: The invention provides a direct methanol fuel cell system comprising a fuel cell main body comprising an anode, a cathode, an electrolyte membrane provided between the anode and the cathode, and a feed tank containing a methanol-containing liquid fuel to be fed to the anode, a first liquid fuel storage tank which contains a methanol-containing liquid fuel to be supplied into the feed tank, a second liquid fuel storage tank which contains a methanol-containing liquid fuel to be supplied into the first liquid fuel storage tank, and a liquid level change detecting mechanism which detects changes in the level of the liquid fuel stored in the first liquid fuel storage tank.

Abstract: The invention provides a direct methanol fuel cell system comprising a fuel cell main body comprising an anode, a cathode, an electrolyte membrane provided between the anode and the cathode, and a feed tank containing a methanol-containing liquid fuel to be fed to the anode, a first liquid fuel storage tank which contains a methanol-containing liquid fuel to be supplied into the feed tank, a second liquid fuel storage tank which contains a methanol-containing liquid fuel to be supplied into the first liquid fuel storage tank, and a liquid level change detecting mechanism which detects changes in the level of the liquid fuel stored in the first liquid fuel storage tank.

Abstract: A fuel cell includes a fuel electrode, an oxidant electrode, a fuel supply port, and a porous material layer for transferring a liquid fuel from the fuel supply port to the fuel electrode. The porous material layer has different values of at least one of a porosity, a permeability and a tortuosity factor depending on the distance of a site of the porous material layer from at least one of the fuel supply port and the fuel electrode.

Abstract: An electrode for a fuel cell, including a porous catalytic carrier including conductive fibers having two particle diameter distribution peaks of a first particle diameter distribution peak existing at a small particle diameter side and a second particle diameter distribution peak existing at a large particle diameter side, wherein said conducting fibers are carbon nano-fibers formed from a catalyst for formation prepared by preparing a mixed powder including one or more of a reducible metallic oxide powder and a non-reducible metallic oxide powder, mixing and pulverizing the mixed powder, and heating the mixed powder under reducing atmosphere; catalyst to be carried on said conductive fibers belonging to the first particle diameter distribution peak; and a proton conductive material adhered on surface of at least the conducive fibers belonging to the first particle diameter distribution peak, so as to come into contact with the catalyst.

Abstract: A fuel cell system includes a cathode, an anode, a fuel supply unit configured to supply a fuel containing methanol and water to the anode, a methanol supply unit configured to supply methanol to the fuel, a sensor which measures a methanol concentration of the fuel, a current measuring unit configured to measure a current flowing between the cathode and the anode, a concentration adjusting unit and a correction unit. The concentration adjusting unit is configured to adjust the methanol concentration of the fuel by controlling the methanol supply unit by using an output value of the sensor. The correction unit is configured to correct a data of a relation between the methanol concentration of the fuel and the output value of the sensor, using an output of the current measuring unit.

Abstract: According to one embodiment, a fuel cell includes an electromotive section which generates power based on a chemical reaction, a fuel tank which contains a fuel, an anode line through which the fuel is circulated between the electromotive section and the fuel tank, a cathode line which is connected to the electromotive section and through which products from the electromotive section are discharged, a cooling section which is connected to the cathode line and cools the products to condense water, a water recovery line which guides the water condensed in the cooling section into the fuel tank, and a base manifold which defines a plurality of lines including the anode line and the cathode line.

Abstract: The carbon fibers of this invention is characterized in that irreducible inorganic material particles in a mean primary particle size below 500 nm and reducible inorganic material particles in a mean primary particle size below 500 nm were mixed by pulverizing and then, the mixture was heat treated under the reducing atmosphere and metal particles in a mean particle size below 1 ?m were obtained, and the mixed powder of the thus obtained metal particles with the irreducible inorganic material particles are included in the carbon fibers.

Abstract: A fuel cell formed by arranging a plurality of unit cells, wherein each unit cell comprises a membrane electrode assembly arranged such that an electrolyte membrane is clamped between a membrane-like oxidizer electrode and a membrane-like fuel electrode as well as the electrolyte membrane is disposed with the outer periphery thereof protruding from the outer peripheries of the fuel electrode and the oxidizer electrode, a first separator disposed with an abutment surface abutting on the fuel electrode of the membrane electrode assembly and having a first flow path for supplying fuel, and a second separator disposed with an abutment surface abutting on the oxidizer electrode of the membrane electrode assembly and having a second flow path for supplying an oxidizer.

Abstract: A liquid fuel cell includes a cell stack unit containing at least one separator that includes a liquid fuel flow path and an oxidizer flow path, an end separator stacked on an outermost layer of the cell stack unit and having a liquid fuel inlet, a resin-made manifold plate including a fuel supplying manifold joined to the liquid fuel inlet of the end separator, a resin-made fuel throttle member placed in the fuel supplying manifold and including a fuel passing hole of an opening area smaller than an opening area of the fuel supplying manifold, and a liquid fuel supplying member which supplies liquid fuel to the fuel supplying manifold of the resin-made manifold plate.

Abstract: A separator for a fuel cell is provided with a separator plate including a first main face and second main face which has countered the first main face and first side face and second side face which has countered the first side face; a first inflow port formed on the first main face at a side of the first side face; plural first outflow ports formed on the first main face at a side of the second side face: plural first flow paths formed on the first main face, the first flow paths serpentinely linking the first inflow port with the first outflow ports; a second inflow port formed on the second main face at a side of the second side face; plural second outflow ports formed on the second main face at a side of the first side face; and plural second flow paths formed on the second main face, the second flow paths serpentinely linking the second inflow port with the second outflow ports.

Abstract: A fuel cell power generating apparatus comprises an electromotive section, a container, a methanol aqueous solution recovery mechanism, and flow rate controller controlling the flow rate Jm (mL/min) which controls the flow rate Jm (mL/min) at which the methanol aqueous solution is supplied from the container, in accordance with an evaluated concentration of the methanol aqueous solution in the container, wherein the fuel cell power generating apparatus satisfies conditions (1) to (3) given below: 2?Cm0?5??(1) L?40??(2) N·0.65/L·S?Jm?N·5.2/L·S??(3).

Abstract: A fuel cell has an electromotive unit which generates power based on a chemical reaction, a fuel tank which contains a fuel and supplies the fuel to the electromotive unit, and an air supply section which supplies air to the electromotive unit. The electromotive unit has cells laminated to one another and each having an anode and a cathode opposed to each other with an electrically conductive membrane therebetween, a pair of end faces situated individually at two opposite ends of the cells in the direction of lamination thereof and extending across the lamination direction, and a plurality of side faces extending in the cell lamination direction. Radiator fins for cooling the electromotive unit are arranged on the side faces not including the end faces.

Abstract: A fuel cell system is provided with a fuel cell stack including plural unit fuel cells connected in series, plural detection units respectively detecting abnormality of potential differences between the positive and negative electrodes of unit fuel cells, the unit fuel cells being connected in series and constituting a part of the fuel cell stack and a bypass unit forming bypass current path between the ends, the bypass unit being operative when at least one of the plural detection units detects the abnormality of the potential difference.

Abstract: A fuel cell unit includes a casing, an electromotive element which is located in the casing and generates electric power through a chemical reaction, and a fuel container which is removably connected to the casing and contains a fuel to be supplied to the electromotive element. The casing has a base and a wall surface in the form of an outwardly convex curved surface.

Abstract: The invention provides a direct methanol fuel cell system comprising a fuel cell main body comprising an anode, a cathode, an electrolyte membrane provided between the anode and the cathode, and a feed tank containing a methanol-containing liquid fuel to be fed to the anode, a first liquid fuel storage tank which contains a methanol-containing liquid fuel to be supplied into the feed tank, a second liquid fuel storage tank which contains a methanol-containing liquid fuel to be supplied into the first liquid fuel storage tank, and a liquid level change detecting mechanism which detects changes in the level of the liquid fuel stored in the first liquid fuel storage tank.

Abstract: The invention provides a fuel cartridge for supplying methanol aqueous solution to a direct methanol fuel cell system, comprising a memory which stores at least a concentration of the methanol aqueous solution.

Abstract: A fuel cell power generating apparatus comprises an electromotive section, a container, a methanol aqueous solution recovery mechanism, and flow rate controller controlling the flow rate Jm (mL/min) which controls the flow rate Jm (mL/min) at which the methanol aqueous solution is supplied from the container, in accordance with an evaluated concentration of the methanol aqueous solution in the container, wherein the fuel cell power generating apparatus satisfies conditions (1) to (3) given below:

Abstract: The present invention provides a electrode layer for fuel cells which is improved in the efficiency of a catalyst, the diffusion capability of fuel, the stabilization and the high output.