Polymer electrolyte fuel cell
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United States of America Patent
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-
Sep 12, 2000
Grant Date -
N/A
app pub date -
Mar 24, 1998
filing date -
Mar 25, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is for facilitating a removal of water around the catalytic layers of a polymer electrolyte fuel cell and for providing a polymer electrolyte fuel cell which can prevent from drop in output performance caused by excessive wetting of electrode layers due to a long-hour operation or a large current ouputting operation. The polymer electrolyte fuel cell according to the present invention uses an electrode layer having a water repellent porous base area and penetration areas which are higher in water permeability than in the base area. Such base area and penetration areas are formed as by imparting water repellency unevenly on a hydrophilic pore material, for example.
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