The invention relates to a metal-air electrochemical cell comprising a frame (100) defining an electrolyte chamber having an anode side and a cathode side, wherein an air cathode assembly is provided in the cathode side, said air cathode assembly (20) comprising hydrophobic porous film having a first face and a second face, with current collector (21) and catalyst-containing active layer (26) provided on said first face, with the planar dimensions of the catalyst-containing active layer on said first face being smaller than that of said hydrophobic film and said current collector, such that the catalyst-containing active layer does not reach the edges of said hydrophobic film and said current collector, thereby creating a catalyst-free margin (27) on the hydrophobic film (31) and current collector which surrounds the catalyst-containing active layer, and wherein said first face of the hydrophobic film and said frame of the cell arm joined together by thermoplastic (101) applied onto the catalyst-free margin of the hydrophobic film. A method of assembling the metal/air cell is also described.

Provided is a manufacturing method of a fuel-cell single cell including a membrane-electrode assembly, an anode gas diffusion layer, a cathode gas diffusion layer, and a frame-shaped resin frame to which a peripheral edge portion of the membrane-electrode assembly is fixed. The method includes an adhesive application step of applying an adhesive by screen printing to a predetermined area of the resin frame while fixing the resin frame by suction, and a stacking step and a UV irradiation step of bonding together the resin frame to which the adhesive has been applied and the membrane-electrode assembly by the adhesive.

Provided is a manufacturing method of a fuel-cell single cell including a membrane-electrode assembly, an anode gas diffusion layer, a cathode gas diffusion layer, and a frame-shaped resin frame to which a peripheral edge portion of the membrane-electrode assembly is fixed. The method includes an adhesive application step of applying an adhesive by screen printing to a predetermined area of the resin frame while fixing the resin frame by suction, and a stacking step and a UV irradiation step of bonding together the resin frame to which the adhesive has been applied and the membrane-electrode assembly by the adhesive.

The fuel cell comprises for each MEA: an anodic volume for the circulation of an anodic fluid between the anode of the MEA and a bipolar plate and a cathodic volume for the circulation of a cathodic fluid between the anode of the MEA and another bipolar plate, one of the anodic volume and the cathodic volume is sealed by a cordon of a sealing material extending along a peripheral outer edge of the MEA, wherein the sealing material is in direct contact with the MEA and the corresponding bipolar plate; wherein the other of the anodic volume and the cathodic volume is sealed off from the fluid circulating in the volume by a direct contact line of the MEA with the corresponding bipolar plate, the contact line extending along a peripheral outer edge of the MEA.

The fuel cell comprises for each MEA: an anodic volume for the circulation of an anodic fluid between the anode of the MEA and a bipolar plate and a cathodic volume for the circulation of a cathodic fluid between the anode of the MEA and another bipolar plate, one of the anodic volume and the cathodic volume is sealed by a cordon of a sealing material extending along a peripheral outer edge of the MEA, wherein the sealing material is in direct contact with the MEA and the corresponding bipolar plate; wherein the other of the anodic volume and the cathodic volume is sealed off from the fluid circulating in the volume by a direct contact line of the MEA with the corresponding bipolar plate, the contact line extending along a peripheral outer edge of the MEA.

The invention is related to a method for bonding components of a PEM fuel cell with a frame and/or amongst one another, wherefore an adhesive curable by electromagnetic radiation in the range of visible light or UV is applied to the frame and/or the at least one component. The invention is characterized in that the adhesive is activated by the electromagnetic radiation and heated after the frame and/or components are brought into contact; or the frame and/or the components are brought into contact and the adhesive is exposed to electromagnetic radiation for activating and heating; to reduce its viscosity before the adhesive is finally cured. The adhesive is a cationic epoxy which contains water.

The invention is related to a method for bonding components of a PEM fuel cell with a frame and/or amongst one another, wherefore an adhesive curable by electromagnetic radiation in the range of visible light or UV is applied to the frame and/or the at least one component. The invention is characterized in that the adhesive is activated by the electromagnetic radiation and heated after the frame and/or components are brought into contact; or the frame and/or the components are brought into contact and the adhesive is exposed to electromagnetic radiation for activating and heating; to reduce its viscosity before the adhesive is finally cured. The adhesive is a cationic epoxy which contains water.

A method of producing a rubber seal includes placing a screen with an opening, above a workpiece including a base portion and a bead base protruding from the base portion and applying a liquid material for forming the rubber seal, onto a top part of the bead base through the opening. In the production, the liquid material is applied onto the top part by moving a squeegee along a surface of the screen in a state where a stopper portion is disposed at a position adjacent to the bead base within an area of the base portion and between the screen and the workpiece.

A method of producing a rubber seal includes placing a screen with an opening, above a workpiece including a base portion and a bead base protruding from the base portion and applying a liquid material for forming the rubber seal, onto a top part of the bead base through the opening. In the production, the liquid material is applied onto the top part by moving a squeegee along a surface of the screen in a state where a stopper portion is disposed at a position adjacent to the bead base within an area of the base portion and between the screen and the workpiece.

An object of the present invention is to provide an adhesive composition having an excellent adhesive force even in the presence of hot water in an assembly in which at least one of two or more members to be bonded to each other via the adhesive composition is a low-polarity metal member, and an adhesion method. The present invention relates to an adhesive composition and an adhesion method for bonding a metal member. The adhesive composition contains a polyolefin (A) component having an acidic group and/or an acid anhydride group and having an acid value of 0.01 mgKOH/g to 6.5 mgKOH/g. The metal member has a ratio of a dipole term in surface free energy of 0.01% to 5.0%.