Catalytic recombination of evolved oxygen in galvanic cells

Details Catalytic recombination of evolved oxygen in galvanic cells Catalytic recombination of evolved oxygen in galvanic cells

1989-09-11

1990-02-13

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

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

429229, H01M 1052

Patent

active

049006428

ABSTRACT:
In rechargeable, electrochemical cells, oxygen may evolve on charge, overcharge or any reversal of polarity. The invention concerns an auxiliary, electrochemical, transfer electrode to catalyze the recombination of such oxygen with the anode mass. The auxiliary electrode comprises porous carbon bonded with PTFE and is used in a cell having a zinc anode, a metal oxide cathode and an aqueous alkaline electrolyte contacting both anode and cathode.

REFERENCES:
patent: 3350225 (1967-10-01), Seiger
patent: 3438812 (1969-04-01), Cherney et al.
patent: 3536537 (1970-10-01), Solomon
patent: 4246326 (1981-01-01), Sprengel et al.

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