Hydrogen-air fuel cell
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United States of America Patent
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Jul 7, 1998
Grant Date -
N/A
app pub date -
Jun 18, 1997
filing date -
Jun 18, 1997
priority date (Note) -
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Abstract
A reactant flow system for a proton exchange membrane (PEM), hydrogen-air, fuel cell stack, is described. The flow system includes the use of single-pass or multi-pass, flow channels. A flow channel section having at least one adjacent channel section whose reactant flows in an opposite direction thereto. The system has respective reactant inlets that are effectively adjacent to reactant outlets of the adjacent channel section. Restrictions are used at the reactant inlets to assure substantially uniform reactant flow among all of the flow channels. The PEM fuel cell stack has a mechanism for removing heat therefrom in order to prevent drying out of the electrolyte membrane.
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