Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2007-10-23
2007-10-23
Ruthkosky, Mark (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S006000, C429S047000
Reexamination Certificate
active
10870465
ABSTRACT:
A bonded membrane-electrode assembly is provided which enables the electrolysis of water, which has water-electrolyzing and power-generating functions enabling the generation of hydrogen, and which is capable of being utilized for a fuel cell; and a fuel cell system with a water electrolyzer is provided using a plurality of such bonded membrane-electrode assemblies. The bonded membrane-electrode assembly includes a solid polymer electrolyte membrane, an oxygen electrode bonded to one of sides of the solid polymer electrolyte membrane, and a hydrogen electrode bonded to the other side of the solid polymer electrolyte membrane. The oxygen electrode includes a porous sheet-shaped carbon element plated with iridium, a first coated layer formed on a surface of the sheet-shaped carbon element, which is in contact with the solid polymer electrolyte membrane, by applying a mixture containing carbon and a resin for the solid polymer electrolyte membrane on that surface, and a second coated layer formed on the first coated layer by applying a mixture containing Pt (alloy) and/or Pt (alloy)-carried carbon and a resin for the solid polymer electrolyte membrane thereon. The hydrogen electrode includes a porous sheet-shaped carbon element, a first coated layer formed on the sheet-shaped carbon element by applying a mixture containing carbon and a resin for the solid polymer electrolyte membrane on the surface thereof, and a second coated layer formed on the first coated layer by applying a mixture containing Pt (alloy) and/or Pt (alloy)-carried carbon and a resin for the solid polymer electrolyte membrane thereon.
REFERENCES:
patent: 5372617 (1994-12-01), Kerrebrock et al.
patent: 5514486 (1996-05-01), Wilson
patent: 2004/0238353 (2004-12-01), Kato et al.
patent: 11269688 (1999-10-01), None
patent: 2000064080 (2000-02-01), None
Ido Yasuo
Kanematsu Katsumi
Kato Eiji
Nawa Shoji
Browdy and Neimark PLLC
Daido Metal Company Ltd.
Ruthkosky Mark
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