Solid polymer electrolyte fuel cell

Details Solid polymer electrolyte fuel cell Solid polymer electrolyte fuel cell

1997-10-22

1999-07-13

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 19, 429 20, 429 32, 429 34, 429 39, H01M 804

Patent

active

059224851

ABSTRACT:
A solid polymer electrolyte fuel cell characterized by high cell performance, compact size and low cost prevents condensation and liquefaction of moisture in the reactant gases and facilitates uniform cooling in the electrode planes of the unit cells. The solid polymer electrolyte fuel cell features a unit cell structure including separators, each including an oxidant gas inlet, fuel gas inlets, coolant inlets, an oxidant gas outlet, fuel gas outlets and coolant outlets. The inlets are arranged in a peripheral region of the separators and the outlets in a central region of the separators. The oxidant gas, fuel gas and coolant are made to flow from the peripheral region to the central region such that the temperatures of the oxidant and fuel gases are higher near the reactant gas outlets. A continuous coolant flow path is provided by forming protrusions in the reactant gas conduits.

REFERENCES:
patent: 5230966 (1993-07-01), Voss et al.

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