Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1984-08-27
1986-05-13
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
296232, 427115, H01M 488, H01M 824
Patent
active
045886610
ABSTRACT:
A bipolar gas reactant distribution assembly for use in a fuel cell is disclosed, the assembly having a solid edge seal to prevent leakage of gaseous reactants wherein a pair of porous plates are provided with peripheral slits generally parallel to, and spaced apart from two edges of the plate, the slit being filled with a solid, fusible, gas impervious edge sealing compound. The plates are assembled with opposite faces adjacent one another with a layer of a fusible sealant material therebetween the slits in the individual plates being approximately perpendicular to one another. The plates are bonded to each other by the simultaneous application of heat and pressure to cause a redistribution of the sealant into the pores of the adjacent plate surfaces and to cause the edge sealing compound to flow and impregnate the region of the plates adjacent the slits and comingle with the sealant layer material to form a continuous layer of sealant along the edges of the assembled plates.
REFERENCES:
patent: 4450212 (1984-05-01), Feigenbaum et al.
Kaufman Arthur
Werth John
Engelhard Corporation
Walton Donald L.
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