摘要:
The present invention provides a fuel treatment device which can realize easy separation and collection of a catalyst contained in the device. In a fuel treatment device (21) of the present invention a fuel gas is supplied to a catalyst, which fills a catalyst filling space (24) surrounded by a cylindrical inner circumferential wall and a cylindrical outer circumferential wall, to produce a reformed gas. The fuel treatment device (21) has a removal section indicator indicating a catalyst removal section (29) on the outer circumferential surface of the outer circumferential wall of the cylindrical catalyst filling space (24) and an opening formation assister assisting the formation of a catalyst removal opening for removing the catalyst. The removal section indicator and the opening formation assister are, for example, an oval annular shallow groove (30) formed at the outer circumferential wall of the catalyst filling space (24) over substantially the entire length in the axial direction of the catalyst filling space (24). When a catalyst (25) is collected from the fuel treatment device (21) after a lapse of a period of use, the catalyst removal opening (29) surrounded by the annular shallow groove (30) is cut off, and a catalyst removal opening (40) is formed.
摘要:
There is provided a film electrode assembly for a fuel cell capable of preventing a polymer electrolyte film from being exposed. The film electrode assembly includes: a main body portion of a film electrode assembly having a polymer electrolyte film, and a pair of electrode layers having catalyst layers placed on the two surfaces of the polymer electrolyte film on the inner side from the peripheral edge portion thereof and diffusion layers each having a peripheral edge protruding from the catalyst layer, which are laminated on one another, with a gap being formed between the protruding portion of the diffusion layer and the peripheral edge portion of the polymer electrolyte film; a frame member that sandwiches the peripheral edge portion of the polymer electrolyte film between the paired electrode layers with a gap therebetween, and is formed so as to surround an outer edge of the polymer electrolyte film; and gaskets made of a thermoplastic resin, which are placed on the two surfaces of the frame member. Each gasket includes an annular portion that covers the peripheral edge portion of the main body portion of the film electrode assembly over the entire circumference thereof along the inner edge of the frame member and a gap filling portion that fills the gap.
摘要:
In a fuel-cell stack in which a plurality of cells are stacked, each of the cells including a membrane electrode assembly which is composed of a polyelectrolyte membrane and a pair of electrodes sandwiching the polyelectrolyte membrane, and a pair of separators by which the membrane electrode assembly is sandwiched, where the electrodes each have a catalytic layer brought into contact with the polyelectrolyte membrane and a gas diffusion layer brought into contact with the separator, and where a material of the gas diffusion layers is formed from carbon fiber woven cloth. In this fuel-cell stack, the warp direction and weft direction of the carbon fiber woven cloth are so set as to be uniform in all the cells with respect to the primary direction of the gas flow passages of the separators.
摘要:
A method of preserving a fuel cell membrane electrode assembly in which catalyst electrodes are stacked on each surface of a polymer electrolyte is to preserve the fuel cell membrane electrode assembly in an airtight package that prevents oxygen, moisture and a function inhibitor from permeating through the package.
摘要:
In a fuel-cell stack in which a plurality of cells are stacked, each of the cells includes a membrane electrode assembly which is composed of a polyelectrolyte membrane and a pair of electrodes sandwiching the polyelectrolyte membrane, and a pair of separators by which the membrane electrode assembly is sandwiched, where the electrodes each have a catalytic layer brought into contact with the polyelectrolyte membrane and a gas diffusion layer brought into contact with the separator, and where a material of the gas diffusion layers is formed from carbon fiber woven cloth. In this fuel-cell stack, the warp direction and weft direction of the carbon fiber woven cloth are so set as to be uniform in all the cells with respect to the primary direction of the gas flow passages of the separators.
摘要:
There is provided a film electrode assembly for a fuel cell capable of preventing a polymer electrolyte film from being exposed. The film electrode assembly includes: a main body portion of a film electrode assembly having a polymer electrolyte film, and a pair of electrode layers having catalyst layers placed on the two surfaces of the polymer electrolyte film on the inner side from the peripheral edge portion thereof and diffusion layers each having a peripheral edge protruding from the catalyst layer, which are laminated on one another, with a gap being formed between the protruding portion of the diffusion layer and the peripheral edge portion of the polymer electrolyte film; a frame member that sandwiches the peripheral edge portion of the polymer electrolyte film between the paired electrode layers with a gap therebetween, and is formed so as to surround an outer edge of the polymer electrolyte film; and gaskets made of a thermoplastic resin, which are placed on the two surfaces of the frame member. Each gasket includes an annular portion that covers the peripheral edge portion of the main body portion of the film electrode assembly over the entire circumference thereof along the inner edge of the frame member and a gap filling portion that fills the gap.
摘要:
A method of preserving a fuel cell membrane electrode assembly in which catalyst electrodes are stacked on each surface of a polymer electrolyte is to preserve the fuel cell membrane electrode assembly in an airtight package that prevents oxygen, moisture and a function inhibitor from permeating through the package.
摘要:
In an endoscope, there are provided in a manipulating terminal of an optical visual pipe thereof an eyepiece member, a light-guide, various operative instrument channels and a handling forceps channel. Further, on the handling forceps channel are mounted a gas feeding pipe and a locking mechanism for locking a handling forceps.