Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1996-01-17
1997-01-21
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 32, 429 38, 429 31, H01M 810
Patent
active
055958346
ABSTRACT:
A stack of polymer electrolyte fuel cells is formed from a plurality of unit cells where each unit cell includes fuel cell components defining a periphery and distributed along a common axis, where the fuel cell components include a polymer electrolyte membrane, an anode and a cathode contacting opposite sides of the membrane, and fuel and oxygen flow fields contacting the anode and the cathode, respectively, wherein the components define an annular region therethrough along the axis. A fuel distribution manifold within the annular region is connected to deliver fuel to the fuel flow field in each of the unit cells. The fuel distribution manifold is formed from a hydrophilic-like material to redistribute water produced by fuel and oxygen reacting at the cathode. In a particular embodiment, a single bolt through the annular region clamps the unit cells together. In another embodiment, separator plates between individual unit cells have an extended radial dimension to function as cooling fins for maintaining the operating temperature of the fuel cell stack.
REFERENCES:
patent: 4824742 (1989-04-01), Parry
patent: 5158837 (1992-10-01), Misawa et al.
patent: 5176967 (1993-01-01), Ishihara et al.
patent: 5185219 (1993-02-01), Ishihara et al.
patent: 5186806 (1993-02-01), Clark et al.
patent: 5211984 (1993-05-01), Wilson
patent: 5234777 (1993-08-01), Wilson
K. Prater, "Solid polymer fuel cell developments at Ballard" Journal of Power Sources, 37, 181-188 (1992) (Month not avail).
J. K. Neutzler et al., "Development of a Portable, Air-Breathing Polymer Electrolyte Fuel Cell Stack," printed in Extended Abstracts, Electrochemical Society Meeting, vol. 94-2, p. 961 (Oct. 1994).
Neutzler Jay K.
Wilson Mahlon S.
Skapars Anthony
The Regents of the University of Calif.
Wilson Ray G.
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