Cell provided with gaseous diffusion electrode, and method of ch

Details Cell provided with gaseous diffusion electrode, and method of ch Cell provided with gaseous diffusion electrode, and method of ch

1995-03-28

1996-01-02

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

Prevention or elimination means is one of the cell...

429101, 429223, 320 2, H01M 1044, H01M 1052

Patent

active

054807417

ABSTRACT:
A cell provided with a gaseous diffusion electrode is constituted of the gaseous diffusion electrode, a hydrogen-absorbing alloy electrode, and a chargeable auxiliary electrode wherein nickel hydroxide is used as the active material thereof. The chargeable auxiliary electrode may be disposed either between the gaseous diffusion electrode and the hydrogen-absorbing alloy electrode, or on the opposite side of the gaseous diffusion electrode to the hydrogen-absorbing alloy electrode. The chargeable auxiliary electrode that can be used may be either a sintered-type nickel electrode for securing a long life span, or a foamed-type nickel electrode or a fiber-type nickel electrode for securing a high capacity. The hydrogen-absorbing alloy electrode has a layer of at least one of metallic nickel, cobalt and copper on the surface of the alloy in order to suppress oxidation thereof at the time of over discharge.

REFERENCES:
patent: 4900642 (1990-02-01), Tomantschger et al.
patent: 4925747 (1990-05-01), Kordesch et al.
patent: 4957826 (1990-09-01), Cheiky
patent: 5043234 (1991-08-01), Tomantschger et al.

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