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AssigneeAsahi Glass Company, Limited
InventorsTakeshi Morimoto, Eiji Endoh
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A highly durable cathode of a low hydrogen overvoltage with particles of an electrode active metal being stuck on the core material of the electrode, wherein a part or all of the electrode active metal particles is a hydrogen absorbing metal which is capable of electro-chemically absorbing and desorbing hydrogen. A method for manufacturing a highly durable cathode of a low hydrogen overvoltage, characterized in that an electrode core is immersed in a plating bath with particles of a hydrogen absorbing metal capable of electro-chemically absorbing and desorbing hydrogen being dispersed as at least one part of particles of an electrode active metal, and that the electrode active metal particles are electrolytically co-deposited on the electrode core together with a plating metal by the composite plating method. A method for manufacturing a highly durable cathode of a low hydrogen overvoltage, which comprises fabricating a sheet containing therein a hydrogen absorbing metal capable of electro-chemically absorbing and desorbing hydrogen, or electrode active metal particles composed of the hydrogen absorbing metal and another metal having a low hydrogen overvoltage, in such a manner that at least one part thereof may be exposed on at least one surface side of the sheet; and fixing the sheet to an electrode core on the surface opposite to the surface where the particles are exposed.
A highly durable cathode of low hydrogen overvoltage, which comprises an electrode core material having on the surface thereof a metal layer containing electrode active metal particles at least a portion of which particles comprises a hydrogen absorbing metal capable of electrochemically absorbing and desorbing hydrogen, wherein said metal layer has a porosity of about 20 to 90%, and further wherein a portion of said electrode active metal particles comprises Raney nickel or Raney cobalt or a mixture thereof, and said hydrogen absorbing metal is a lanthanum/nickel system alloy, and titanium/nickel system alloys.
A highly durable cathode of low hydrogen overvoltage, which comprises an electrode core material having on the surface thereof an intermediate layer consisting of a metal selected from the group consisting of Ni, Co, Ag and Cu;
Dependencies are inferred from the claim text.