Abstract: A manufacturing method for a fuel cell may comprise preparing an electrode sheet including at least an electrolyte membrane; arranging a joining material constituted of a thermoplastic resin in a frame shape on the electrolyte membrane; arranging a support frame having an opening on the joining material arranged on the electrolyte membrane; performing a first laser irradiation process in which the support frame is irradiated with a laser beam such that a first portion of the joining material between the support frame and the electrolyte membrane melts and the electrolyte membrane and the support frame are welded to each other; and performing a second laser irradiation process in which a second portion of the joining material that is positioned inside the opening of the support frame is irradiated with a laser beam such that the second portion of the joining material melts and is welded to the electrolyte membrane.

Abstract: A fuel cell includes a membrane electrode assembly having electrodes disposed on both surfaces of an electrolyte membrane, a gas diffusion layer stacked on one surface of the membrane electrode assembly, a resin frame assembled onto the one surface of the membrane electrode assembly so as to surround the outer periphery of the gas diffusion layer apart from the outer periphery of the gas diffusion layer, and a resin sheet disposed between the gas diffusion layer and the resin frame, and the membrane electrode assembly so as to fill a space between the inner periphery of the resin frame and the outer periphery of the gas diffusion layer.

Abstract: A manufacturing method for a fuel cell may comprise preparing an electrode sheet including at least an electrolyte membrane; arranging a joining material constituted of a thermoplastic resin in a frame shape on the electrolyte membrane; arranging a support frame having an opening on the joining material arranged on the electrolyte membrane; performing a first laser irradiation process in which the support frame is irradiated with a laser beam such that a first portion of the joining material between the support frame and the electrolyte membrane melts and the electrolyte membrane and the support frame are welded to each other; and performing a second laser irradiation process in which a second portion of the joining material that is positioned inside the opening of the support frame is irradiated with a laser beam such that the second portion of the joining material melts and is welded to the electrolyte membrane.

Abstract: A bonding jig used for bonding a gas diffusion layer or a fuel cell constituent member including the gas diffusion layer to be sandwiched between separators and an adhesive sheet for joining the separators to the gas diffusion layer or fuel cell constituent member, the bonding jig being capable of simultaneously performing bonding and eliminating fluffy fibers on the gas diffusion layer. The bonding jig includes a loading area (recess) where the gas diffusion layer is loaded when the bonding is performed, and the recess has a plurality of communication holes that communicate with the outside and that are coupled to a suction pump. While the adhesive sheet is placed on the side of the upper face of the bonding jig so as to be integrated with the gas diffusion layer, the suction pump is actuated to eliminate fluffy fibers on the gas diffusion layer.

Abstract: A fuel cell includes a membrane electrode assembly having electrodes disposed on both surfaces of an electrolyte membrane, a gas diffusion layer stacked on one surface of the membrane electrode assembly, a resin frame assembled onto the one surface of the membrane electrode assembly so as to surround the outer periphery of the gas diffusion layer apart from the outer periphery of the gas diffusion layer, and a resin sheet disposed between the gas diffusion layer and the resin frame, and the membrane electrode assembly so as to fill a space between the inner periphery of the resin frame and the outer periphery of the gas diffusion layer.

Abstract: A method for manufacturing an integrated sheet of a MEGA and a resin frame, capable of curing a UV curable adhesive in a short time by suppressing an inhibition of curing of the UV curable adhesive and thereby providing excellent productivity is provided. A manufacturing method for an integrated sheet in which a resin frame is bonded to a MEGA, includes preparing a laminate in which a gas diffusion layer is laminated on at least one surface of a MEA, applying a coating of an UV curable adhesive to the laminate; placing a resin frame on the UV curable adhesive and applying a pressure to the frame, and irradiating the UV curable adhesive with ultraviolet rays, in which the irradiating includes a first irradiation step, and a second irradiation step in which ultraviolet rays are applied with irradiation intensity higher than irradiation intensity in the first irradiation step.

Abstract: A bonding jig used for bonding a gas diffusion layer or a fuel cell constituent member including the gas diffusion layer to be sandwiched between separators and an adhesive sheet for joining the separators to the gas diffusion layer or fuel cell constituent member, the bonding jig being capable of simultaneously performing bonding and eliminating fluffy fibers on the gas diffusion layer. The bonding jig includes a loading area (recess) where the gas diffusion layer is loaded when the bonding is performed, and the recess has a plurality of communication holes that communicate with the outside and that are coupled to a suction pump. While the adhesive sheet is placed on the side of the upper face of the bonding jig so as to be integrated with the gas diffusion layer, the suction pump is actuated to eliminate fluffy fibers on the gas diffusion layer.

Abstract: A method for manufacturing an integrated sheet of a MEGA and a resin frame, capable of curing a UV curable adhesive in a short time by suppressing an inhibition of curing of the UV curable adhesive and thereby providing excellent productivity is provided. A manufacturing method for an integrated sheet in which a resin frame is bonded to a MEGA, includes preparing a laminate in which a gas diffusion layer is laminated on at least one surface of a MEA, applying a coating of an UV curable adhesive to the laminate; placing a resin frame on the UV curable adhesive and applying a pressure to the frame, and irradiating the UV curable adhesive with ultraviolet rays, in which the irradiating includes a first irradiation step, and a second irradiation step in which ultraviolet rays are applied with irradiation intensity higher than irradiation intensity in the first irradiation step.

Abstract: A separator for fuel cell includes a corrugated portion formed to have a corrugated cross section where a first groove that is concave to a first surface to form a flow path for a first fluid on the first surface and a second groove that is concave to a second surface opposite to the first surface to form a flow path for a second fluid on the second surface are arranged alternately and repeatedly. Each of the second grooves has at least one shallower groove section formed to have a less depth from the second surface than depth of a remaining groove section and provided to form a communication flow channel on the first surface side, which is arranged to communicate between two flow path spaces for the first fluid that are adjacent to each other across the shallower groove section.

Abstract: A durability test device that examines durability of a membrane electrode assembly used for a polymer electrolyte fuel cell includes: a voltage application device that applies a voltage from one surface of the membrane electrode assembly to the other surface thereof; a current measurement device that measures a current flowing from the one surface to the other surface by the application of the voltage; and a control section that controls the voltage application device to apply the voltage to the membrane electrode assembly while sweeping the voltage over a plurality of consecutive voltage regions in such a manner that a first sweep rate of the voltage to be applied in the first voltage region in which a measured current value includes a peak caused due to carbon oxidation is set lower than that in the second voltage region that does not include the first voltage region.

Abstract: A separator for fuel cell includes a corrugated portion formed to have a corrugated cross section where a first groove that is concave to a first surface to form a flow path for a first fluid on the first surface and a second groove that is concave to a second surface opposite to the first surface to form a flow path for a second fluid on the second surface are arranged alternately and repeatedly. Each of the second grooves has at least one shallower groove section formed to have a less depth from the second surface than depth of a remaining groove section and provided to form a communication flow channel on the first surface side, which is arranged to communicate between two flow path spaces for the first fluid that are adjacent to each other across the shallower groove section.

Abstract: A durability test device that examines durability of a membrane electrode assembly used for a polymer electrolyte fuel cell includes: a voltage application device that applies a voltage from one surface of the membrane electrode assembly to the other surface thereof; a current measurement device that measures a current flowing from the one surface to the other surface by the application of the voltage; and a control section that controls the voltage application device to apply the voltage to the membrane electrode assembly while sweeping the voltage over a plurality of consecutive voltage regions in such a manner that a first sweep rate of the voltage to be applied in the first voltage region in which a measured current value includes a peak caused due to carbon oxidation is set lower than that in the second voltage region that does not include the first voltage region.

Abstract: A separator for fuel cell includes a corrugated portion formed to have a corrugated cross section where a first groove that is concave to a first surface to form a flow path for a first fluid on the first surface and a second groove that is concave to a second surface opposite to the first surface to form a flow path for a second fluid on the second surface are arranged alternately and repeatedly. Each of the second grooves has at least one shallower groove section formed to have a less depth from the second surface than depth of a remaining groove section and provided to form a communication flow channel on the first surface side, which is arranged to communicate between two flow path spaces for the first fluid that are adjacent to each other across the shallower groove section.

Abstract: A polymer electrolyte fuel cell includes an electrode including a catalyst layer and a diffusion layer. The catalyst layer is divided into a plurality of portions including an upstream portion and a downstream portion along a reactant gas flow direction. The upstream portion of the catalyst layer has a structure for preventing a drying-up of the cell, and the downstream portion of the catalyst layer has a structure for preventing a flooding of the cell. A structure of the diffusion layer also may differ between at the upstream portion and at the downstream portion.

Abstract: The present invention is directed to a fuel reformer device that produces a hydrogen rich gas from a hydrocarbon and steam. The steam reforming reaction that produces the hydrogen rich gas from the hydrocarbon and steam is endothermic. A known technique supplies heat required for the steam reforming reaction by an exothermic oxidation reaction proceeding in parallel with the steam reforming reaction. This known technique may, however, cause an excessive temperature rise in an area of the vigorous oxidation reaction in the fuel reformer device. A reformer unit 34 including a Cu—Zn catalyst receives a supply of a crude fuel gas containing the air flown through a second fuel supply conduit 64. The crude fuel gas is subjected to the steam reforming reaction and the oxidation reaction proceeding inside the reformer unit 34. A resulting hydrogen rich gaseous fuel is discharged to a third fuel supply conduit 65. The reformer unit 34 includes an upper stream reaction unit 80 and a lower stream reaction unit 81.

Abstract: A fuel cell simulator is provided which helps to present guidelines for improving performance when analyzing the causes of decline in performance of a fuel cell. In order to achieve the object, the fuel cell simulator according to the present invention displays separately the activation overvoltage, the concentration overvoltage, and the resistance overvoltage, as respective components of the overvoltage. By displaying the respective components of the overvoltage separately, the amount of the loss accounted for respectively by the activation overvoltage, the concentration overvoltage and the resistance overvoltage of the overall loss can be identified readily, thereby serving to present guidelines for improving performance, when analyzing the causes of decline in performance in a fuel cell.

Abstract: The present invention provides a pneumatic safety tire comprising a pair of left and right bead cores, a carcass layer, a multi-layer belt portion, a tread portion, and a pair of side wall portions disposed at the left and right of said tread portion, wherein at least one sheet of a rubber-filament fiber composite formed from filament fibers and a rubber component is disposed at said side wall portions in a vicinity of said carcass layer. The safety tire of the present invention maintains the properties during ordinary use under the inflated condition at high levels, has a light weight, and shows remarkably improved properties during use under the run-flat condition.

Abstract: A method for manufacturing a diffusion layer for a fuel cell including impregnating a synthetic resin binder into a base layer of a woven fabric, and carbonizing the base layer impregnated with the binder. A method for manufacturing a diffusion layer for a fuel cell including carbonizing a base layer of a woven fabric, impregnating a conductive and/or non-conductive synthetic resin into the carbonized base layer, and solidifying the synthetic resin. A method for manufacturing a diffusion layer for a fuel cell, which includes applying a shear force to a paste including carbon and synthetic resin, coating the paste to a base layer, and solidifying the paste.

Abstract: A polymer electrolyte fuel cell includes an electrode including a catalyst layer and a diffusion layer. The catalyst layer is divided into a plurality of portions including an upstream portion and a downstream portion along a reactant gas flow direction. The upstream portion of the catalyst layer has a structure for preventing a drying-up of the cell, and the downstream portion of the catalyst layer has a structure for preventing a flooding of the cell. A structure of the diffusion layer also may differ between at the upstream portion and at the downstream portion.