Water control sheet, gas diffusion sheet, membrane-electrode assembly and polymer electrolyte fuel cell
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United States of America Patent
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Dec 31, 2013
Grant Date -
Feb 14, 2013
app pub date -
Feb 7, 2012
filing date -
Feb 7, 2011
priority date (Note) -
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Abstract
A water control sheet having superior drainage and gas diffusion properties and superior handling characteristics, and a gas diffusion sheet, a membrane-electrode assembly and a polymer electrolyte fuel cell, which utilize the water control sheet, are provided. The water control sheet is independent and located for use adjacent to a catalyst layer of a polymer electrolyte fuel cell, and is formed of a nonwoven fabric containing conductive fibers containing conductive particles at least inside a hydrophobic organic resin. The gas diffusion sheet, the membrane-electrode assembly and the polymer electrolyte fuel cell according to the present invention have the above water control sheet.
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