Catalytic hydrogen vent filter for batteries

Details Catalytic hydrogen vent filter for batteries Catalytic hydrogen vent filter for batteries

2005-10-11

2005-10-11

Barr, Michael (Department: 1746)

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

C429S054000, C429S055000

Reexamination Certificate

active

06953637

ABSTRACT:
A selective gas permeable membrane allows hydrogen to vent from a battery while preventing other gases from entering the battery. The surface of the filter membrane also catalytically combusts hydrogen and oxygen if both are evolved inside the battery and retains the resulting water for use in the battery. The membrane is made with a porous plastic substrate coated with a thin metal film permeable to hydrogen, and additional coatings. These coatings protect the surfaces, and catalytically combust hydrogen and oxygen.

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