Sealant for porous fuel cell component frames using polymerizati

Details Sealant for porous fuel cell component frames using polymerizati Sealant for porous fuel cell component frames using polymerizati

1991-12-26

1993-06-15

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

296232, 427115, H01M 802

Patent

active

052196747

ABSTRACT:
A porous plate used in a fuel cell is sealed with an essentially 100% active material and catalyst mixture. The mixture is absorbed into and fills essentially the entire void volume provided by the pores. The mixture is then thermally shocked to partially cure the mixture thereby preventing wicking. The partially cured mixture is then post cured by elevating the temperature such that the catalyst initiates free radical polymerization. Since the sealant is essentially 100% active, there are no escape paths formed during the curing process, and the final seal is essentially 100% leak proof.

REFERENCES:
patent: 4450212 (1984-05-01), Feigenbaum et al.
patent: 4728701 (1988-03-01), Jarvis et al.
patent: 4781727 (1988-11-01), Mitsudo et al.

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