FIELD: fuel cells.
SUBSTANCE: bipolar plate designed for distributing fuel-cell fluid medium functions to convey fuel to porous anode and oxidant, to abutting porous cathode. Fluid medium flow distribution plate is essentially nonporous current-carrying sheet wherein fluid medium flow passages are organized. First fluid medium flow passage is provided on first surface of sheet and second one, on its second, opposite surface. First-passage structure is interdigital configuration coordinated with second-passage structure having continuous serpentine configuration so that not a single section of first passage is found on large active area of sheet above second-passage structure. Such configuration makes it possible to organize passages whose total depth exceeds total plate thickness.
EFFECT: enhanced volume of fluid medium being handled.
12 cl, 11 dwg
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