Manufacturing Industry
Stamped Plate Reduces Components.(General Motors develops bipolar plane assembly for PEM fuel cell)(Brief Article)
Fuel Cell Technology News, February, 2003
General Motors Corp.'s (3044 W. Grand Blvd., Detroit, MI 48202; Tel: 313/556-5000) Jeffrey A. Rock has developed a bipolar plate assembly for a PEM fuel cell with a serpentine flow field formed on one side and an interdigitated flow field formed on the opposite side. Thus, a single plate member is usable as an anode current collector and a cathode current collector of adjacent fuel cells. The bipolar plate assembly includes a staggered seal arrangement to direct gaseous reactant flow through the fuel cell such that the seal thickness is maximized while the repeat distance between adjacent fuel cells is minimized.
The metal sheet incorporates a porting scheme, which, when combined with a staggered seal configuration, directs the flow of gaseous fuel to one side...
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