Fuel cell stack with internal manifolds for reactant gases

Details Fuel cell stack with internal manifolds for reactant gases Fuel cell stack with internal manifolds for reactant gases

1983-10-12

1985-04-09

Le Fevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 72, 429185, H01M 208

Patent

active

045102139

ABSTRACT:
A fuel cell stack includes a plurality of plate-like fuel cells arranged along an axis generally parallel to cell thickness with electrically conductive separator plates between each pair of cells. A plurality of axial manifolds are provided at opposite sides of the stack in outer marginal portions beyond the edges of electrodes and electrolyte tiles. Sealing rings prevent cross-leakage of oxidant fuel gases through use of pairs of outwardly extending lips from opposite tile surfaces bonded to first and second electrode frames respectively. The frames provide transition between electrode edges and manifold perimeters. The pairs of extension lips are sealingly bonded together through an electrically insulative sealing ring with wedge shaped fastening members.

REFERENCES:
patent: 3012086 (1961-12-01), Vahldieck
patent: 3188242 (1965-06-01), Kordesch et al.
patent: 3253958 (1966-05-01), Shinn
patent: 4212929 (1980-07-01), Grevstad et al.
patent: 4233369 (1980-11-01), Breault
patent: 4317864 (1982-03-01), Strasser
patent: 4345009 (1982-08-01), Fahle
patent: 4414294 (1983-11-01), Guthrie
"Stack Design", Bond, J. A., 1982 National Fuel Cell Seminar, Newport Bea Cal., Nov. 14-17, 1982.

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