Solid polymer electrolyte fuel cell stack water management syste

Details Solid polymer electrolyte fuel cell stack water management syste Solid polymer electrolyte fuel cell stack water management syste

1987-11-16

1988-09-06

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 30, 429 33, 429 34, H01M 804, H01M 200

Patent

active

047692979

ABSTRACT:
Water is fed into the fuel cell stack in the hydrogen reactant stream. Some of the water is evaporated in the cells to cool the stack, and some of the water migrates through the stack from cell to cell. The water migration is the result of the water being dragged from the anode to the cathode through the electrolyte membrane and by the use of porous hydrophilic separator plates being interposed between adjacent cells in the stack. Water is forced through these porous separator plates by means of a reactant pressure differential maintained between the cathode and anode. The anode support plates provide a large surface area from which water is evaporated to perform the cooling function.

REFERENCES:
patent: 4175165 (1979-11-01), Adlhart
patent: 4478917 (1984-10-01), Fujita et al.
patent: 4515871 (1985-05-01), Sirogami et al.
patent: 4537840 (1985-08-01), Tsukui et al.

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