Storage battery gas recombination catalyst device

Details Storage battery gas recombination catalyst device Storage battery gas recombination catalyst device

1974-05-14

1976-01-06

Walton, Donald L.

Batteries: thermoelectric and photoelectric

Thermoelectric

Radiation pyrometer

136181, 23288R, 252477R, H01M 212, B01J 800

Patent

active

039308901

ABSTRACT:
A lightweight catalyst body bearing a finely divided metal of the platinum group is encased in a porous PTFE shell which is impermeable to the electrolyte because of its hydrophobic surface properties. Several small bodies of this kind, each containing about 1 mg of palladium are inserted in each cell of a vehicle storage battery and float on the electrolyte surface. They not only recombine hydrogen and oxygen to water and return the water to the electrolyte efficiently, even at high ambient temperatures, but the efficiency of the catalyst is not reduced under conditions causing considerable generation of stibine. The core material on which the catalyst is provided, with or without an additional carrier, may be activated charcoal, hollow glass spheres, a porous ceramic or a synthetic resin foam. The porous hydrophobic shell may be sintered or unsintered or may be made of superimposed sintered and unsintered layers.

REFERENCES:
patent: 3102059 (1963-08-01), Harmer
patent: 3464860 (1969-09-01), George et al.
patent: 3701691 (1972-10-01), Sassmannshausen et al.
patent: 3817717 (1974-06-01), Kreidl et al.

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