Hydrogen absorbing material for electrochemical cells
AssigneeUnion Carbide Corporation
InventorAkiya Kozawa
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Abstract
Buildup of unreacted hydrogen gas in sealed electrochemical cells has been prevented by inserting a hydrogen absorbing device into the cell before sealing. This hydrogen absorbing device is preferably a discrete shaped body, e.g., cylindrical or ring shaped, encased in an electrolyte impermeable, but hydrogen gas permeable membrane and includes a material which will react chemically with hydrogen gas, a catalyst for the hydrogen consuming reaction, and a compatible binder which maintains the reactant and catalyst in the form of a discrete shaped body which is porous to hydrogen gas.
Claims5
A hydrogen gas absorbing pellet consisting essentially of a solid compound which will react chemically with hydrogen gas, a catalyst for the hydrogen gas consuming reaction, a binder for retaining the solid compound and the catalyst in a desired geometric shaped body which will be porous to hydrogen gas so as to allow the gas to circulate through the body and contact the surface of the solid compound and catalyst, and an outer sheath encasing said body which is permeable to hydrogen gas but impermeable to liquid.
Dependencies are inferred from the claim text.