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Gas diffusion layer for fuel cell, fuel cell, and method of manufacturing gas diffusion layer for fuel cell

  • US 9,525,187 B2
  • Filed: 01/31/2013
  • Issued: 12/20/2016
  • Est. Priority Date: 02/08/2012
  • Status: Active Grant
First Claim
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1. A gas diffusion layer for a fuel cell, comprising carbon fibers deposited in a layer thickness direction of the gas diffusion layer, whereinthe gas diffusion layer has three or more layers in each of which the carbon fibers are deposited in the layer thickness direction,the carbon fibers having irregularities on fiber surfaces thereof, andthe carbon fibers of an inner layer are larger in size or larger in number than the irregularities on the fiber surfaces of the carbon fibers of a surface layer.

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