Abstract: A film forming apparatus comprises a film forming vessel comprising a first mold and a second mold that is arranged to be opposed to the first mold. The first mold is configured to include a first recessed portion and a first planar portion arranged around the first recessed portion and an exhaust port in a bottom portion of the first recessed portion. The film forming apparatus also comprises a seal member placed between the first planar portion of the first mold and the second mold. The seal member is configured to keep inside of the film forming vessel airtight; and an exhaust device connected with the exhaust port. The work is placed away from the first planar portion such that a film formation target part of the work faces an internal space of the first recessed portion when the film forming vessel is closed.

Abstract: A film forming apparatus configured to form a film on part of a work. The film forming apparatus comprises a film forming vessel comprising a first mold located above the work and a second mold located below the work to be opposed to the first mold. The first mold is configured to include a first recessed portion that is recessed upward viewed from a film formation target part of the work and a first planar portion arranged around the first recessed portion. The second mold is configured to include a second planar portion in a place opposed to the first planar portion. The film forming apparatus also comprises a first seal member located between the first planar portion and the work. The first seal member is configured to come into contact with the first planar portion and the work when the work is away from the first planar portion. The film forming apparatus further comprises a second seal member located between the second planar portion and the work.

Abstract: A film forming apparatus configured to form a film on part of a work. The film forming apparatus comprises a film forming vessel comprising a first mold located above the work and a second mold located below the work to be opposed to the first mold. The first mold is configured to include a first recessed portion that is recessed upward viewed from a film formation target part of the work and a first planar portion arranged around the first recessed portion. The second mold is configured to include a second planar portion in a place opposed to the first planar portion. The film forming apparatus also comprises a first seal member located between the first planar portion and the work. The first seal member is configured to come into contact with the first planar portion and the work when the work is away from the first planar portion. The film forming apparatus further comprises a second seal member located between the second planar portion and the work.

Abstract: A film forming apparatus comprises a film forming vessel comprising a first mold and a second mold that is arranged to be opposed to the first mold. The first mold is configured to include a first recessed portion and a first planar portion arranged around the first recessed portion and an exhaust port in a bottom portion of the first recessed portion. The film forming apparatus also comprises a seal member placed between the first planar portion of the first mold and the second mold. The seal member is configured to keep inside of the film forming vessel airtight; and an exhaust device connected with the exhaust port. The work is placed away from the first planar portion such that a film formation target part of the work faces an internal space of the first recessed portion when the film forming vessel is closed.

Abstract: A fuel cell separator is provided with an opening that functions as a manifold. A resin coating is formed within the peripheral area of the fuel cell separator, in a state where the power generation area is masked with a masking jig. Subsequently, the masking jig is removed, and a conductive coating is formed within the power generation area of the fuel cell separator, the peripheral area of which has been masked by the resin coating.

Abstract: A fuel cell includes a membrane electrode assembly (MEA) having an electrolyte membrane and a pair of electrodes arranged on both sides of the electrolyte membrane in the thickness direction, a pair of frames having a frame shape and holding an outer periphery portion of the electrolyte membrane, a pair of gas diffusion layers arranged inside the pair of frames and on both sides of the MEA in the thickness direction, and a gasket covering at least a part of the pair of frames. The fuel cell further includes a first cross-linking adhesive member formed of rubber which includes a membrane accommodating portion having an indented shape for accommodating the outer periphery portion of the electrolyte membrane and a first intermediate portion interposed between the pair of frames and which is subjected to cross-linking adhesion with the outer periphery portion of the electrolyte membrane and the pair of frames.

Abstract: In fuel cell separator, the periphery of manifold through which fuel gas, reaction water, etc., pass and the seal line being a site of bonding with an adjacent separator are provided with a resin layer. Within the surface of the separator, the resin application site on which the resin layer is formed undergoes subbing treatment in advance to thereby increase the capability of bonding with the resin. When the resin layer consists of a resin having an NH group, as the subbing treatment, hydroxide deposition treatment is carried out on the surface of the separator.

Abstract: An adhesive silicone rubber composition comprising (A) 100 pbw of an organopolysiloxane containing at least two silicon-bonded alkenyl radicals, (B) 0.5-20 pbw of an organohydrogenpolysiloxane containing at least two Si—H radicals, (C) a hydrosilylation catalyst, and (D) 0.1-50 pbw of an organosilicon compound having at least one phenyl structure, at least one alicyclic epoxy radical, and at least one Si—H radical is applicable to an electrolyte membrane and a separator in a polymer electrolyte fuel cell to form a firm integrally molded part.

Abstract: A plate member for a fuel cell is provided. The plate member for the fuel cell may be laminated together with a membrane-electrode assembly to constitute a fuel cell having cells and may be provided with a channel forming portion which forms a fluid channel to supply and discharge a fluid to/from the membrane-electrode assembly and/or the cells. The plate member for the fuel cell includes a first covering portion which covers the channel forming portion, and a second covering portion which covers an edge of the first covering portion together with a portion around the edge of the first covering portion.

Abstract: A separator for use in a fuel cell has an iron-based hydrous oxide film formed on a passive film of a peripheral surface except a gas channel of a separator substrates of SUS by cathodic electrolysis treatment in an alkaline solution and further a resin layer of an electrodeposited water-soluble resin formed on the iron-based hydrous oxide film.

Abstract: There is provided a fuel cell having a seal structure that has high gas sealability and, further, is capable of supplying gas to a membrane electrode assembly without being path-cut even if there are conventional processing errors (variations) in the gasket. With respect to a gasket 5 provided at the periphery of the membrane electrode assembly, a first seal protrusion 51 is formed around a manifold 6. A notch 31 is formed at an end portion of a gas flow path layer 3. An end portion of the gasket 5 blocks the notch 31 and has at least one second seal protrusion 52 protruding from the surface of the gas flow path layer 3 and having a height of the same level as or less than the first seal protrusion 51. A separator 4 is in contact with the gas flow path layer 3 in a posture where the first seal protrusion 51 and the second seal protrusion 52 are compressed. At least one linear seal structure is formed by the second seal protrusion 52 and the separator 4.

Abstract: A separator for use in a fuel cell has an iron-based hydrous oxide film formed on a passive film of a peripheral surface except a gas channel of a separator substrates of SUS by cathodic electrolysis treatment in an alkaline solution and further a resin layer of an electrodeposited water-soluble resin formed on the iron-based hydrous oxide film.

Abstract: There is disclosed a plate member for a fuel cell which is laminated together with a membrane-electrode assembly to constitute a fuel cell having cells and is provided with a channel forming portion which forms a fluid channel to supply and discharge a fluid to/from the membrane-electrode assembly and/or the cells. The plate member for the fuel cell includes a first covering portion which covers the channel forming portion, and a second covering portion which covers an edge of the first covering portion together with a portion around the edge of the first covering portion.

Abstract: An adhesive silicone rubber composition comprising (A) 100 pbw of an organopolysiloxane containing at least two silicon-bonded alkenyl radicals, (B) 0.5-20 pbw of an organohydrogenpolysiloxane containing at least two Si—H radicals, (C) a hydrosilylation catalyst, and (D) 0.1-50 pbw of an organosilicon compound having at least one phenyl structure, at least one alicyclic epoxy radical, and at least one Si—H radical is applicable to an electrolyte membrane and a separator in a polymer electrolyte fuel cell to form a firm integrally molded part.

Abstract: Each of collectors 22 of an electrode structure 20, which partially constitutes a polymer electrolyte fuel cell, is formed from a metal lath MR having a large number of through-holes. A stopping portion 22a in which the through-holes are reduced in diameter is formed at a peripheral end portion of the collector 22. The peripheral end portion of the collector 22 is folded; subsequently, the folded peripheral end portion is pressed, thereby forming the stopping portion 22a. A resin seal portion 23 for sealing introduced fuel gas and oxidizer gas is formed integrally with the stopping portions 22a by insert molding which is performed such that an injected molten resin encloses the stopping portions 22a. The resin seal portion 23 formed integrally with the stopping portions 22a can reliably prevent inflow of the molten resin toward central portions of the collectors 22.

Abstract: A fuel cell separator is provided with an opening that functions as a manifold. A resin coating is formed within the peripheral area of the fuel cell separator, in a state where the power generation area is masked with a masking jig. Subsequently, the masking jig is removed, and a conductive coating is formed within the power generation area of the fuel cell separator, the peripheral area of which has been masked by the resin coating.

Abstract: A fuel cell separator is provided with an opening that functions as a manifold. A resin coating is formed within the peripheral area of the fuel cell separator, in a state where the power generation area is masked with a masking jig. The resin coating is formed so that the separator substrate is exposed within at least a portion of the peripheral area. Subsequently, the masking jig is removed, and a conductive coating is formed within the power generation area of the fuel cell separator, the peripheral area of which has been masked by the resin coating. The conductive coating is formed by causing electricity to flow through the portion of the peripheral area where the separator substrate is exposed.

Abstract: A fuel cell includes a membrane electrode assembly (MEA) having an electrolyte membrane and a pair of electrodes arranged on both sides of the electrolyte membrane in the thickness direction, a pair of frames having a frame shape and holding an outer periphery portion of the electrolyte membrane, a pair of gas diffusion layers arranged inside the pair of frames and on both sides of the MEA in the thickness direction, and a gasket covering at least a part of the pair of frames. The fuel cell further includes a first cross-linking adhesive member formed of rubber which includes a membrane accommodating portion having an indented shape for accommodating the outer periphery portion of the electrolyte membrane and a first intermediate portion interposed between the pair of frames and which is subjected to cross-linking adhesion with the outer periphery portion of the electrolyte membrane and the pair of frames.

Abstract: In fuel cell separator, the periphery of manifold through which fuel gas, reaction water, etc., pass and the seal line being a site of bonding with an adjacent separator are provided with a resin layer. Within the surface of the separator, the resin application site on which the resin layer is formed undergoes subbing treatment in advance to thereby increase the capability of bonding with the resin. When the resin layer consists of a resin having an NH group, as the subbing treatment, hydroxide deposition treatment is carried out on the surface of the separator.