Hydrogen storage electrode and process for producing the same

Details Hydrogen storage electrode and process for producing the same Hydrogen storage electrode and process for producing the same

1990-08-31

1992-04-14

Pal, Asok

Chemistry: electrical current producing apparatus, product, and

Having earth feature

427115, 296235, H01M 486

Patent

active

051047535

ABSTRACT:
Disclosed are a hydrogen storage electrode and a process for producing the same. The process includes the steps of: coating the surface of hydrogen storage alloy powder with copper or nickel, thereby making the hydrogen storage alloy powder into microcapsule; mixing the microcapsule with uncrosslinked silicone rubber and/or powder for forming porosity; and pressure molding the mixture of the microcapsule, the uncrosslinked silicone rubber and/or the powder for forming porosity, thereby completing the crosslinking of the uncrosslinked silicone rubber during or after the pressure molding. The hydrogen storage electrode has a reduced capacity deterioration characteristic during a high rate electric discharge and an extended charge and discharge cycle life, since the silicone rubber binds the neighboring mecorcapsules elastically, thereby preventing the microcapsules including the hydrogen storage powder from coming off, and since the powder for forming porosity forms microspaces on the boundaries between itself and the silicone rubber, thereby improving the hydrogen permeability and reducing the internal electric resistance.

REFERENCES:
patent: 4799360 (1989-01-01), Retallick et al.

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