HYDROPHOBIC LAYER FOR A FUEL CELL
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United States of America Patent
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Issued Date -
Mar 25, 2010
app pub date -
Dec 20, 2006
filing date -
Dec 20, 2006
priority date (Note) -
Abandoned
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Abstract
A device for managing fluid flow within a fuel cell assembly (24) includes a water transport plate (42) having a plurality of channels (44) and a rib (48) on each side of each channel (44). At least some of the ribs (48) have a hydrophobic layer (46) near an end of the ribs (48). The hydrophobic layer (46) in a disclosed example is adjacent a gas diffusion layer (38) associated with a cathode catalyst layer (34). One example use of the example hydrophobic layer (46) is to prevent water movement into pores of the cathode catalyst layer during cold temperature conditions.
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