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Fuel cell subassemblies incorporating subgasketed thrifted membranes

  • US 8,637,205 B2
  • Filed: 12/20/2010
  • Issued: 01/28/2014
  • Est. Priority Date: 12/22/2009
  • Status: Active Grant
First Claim
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1. A fuel cell roll good subassembly, comprising:

  • a plurality of individual electrolyte membranes, each electrolyte membrane comprising a center region, wherein at least some of the electrolyte membranes are catalyst coated electrolyte membranes comprising a first catalyst, a second catalyst, and an electrolyte membrane having first and second generally opposed major surfaces and first and second generally opposed edges, wherein the first catalyst is on the first major surface, wherein the second catalyst is on the second major surface, and wherein the first and second edges of at least one of the electrolyte membranes, first catalyst, and second catalyst are co-terminus;

    one or more first subgaskets attached to the individual electrolyte membranes, each of the first subgaskets having at least one aperture, the first subgaskets arranged so that the center regions of the individual electrolyte membranes are exposed through the apertures of the first subgaskets; and

    a second subgasket comprising a web having a plurality of apertures, the second subgasket web arranged so that center regions of the individual electrolyte membranes are exposed through the apertures of the second subgasket web,wherein the first gasket aperture and the second gasket aperture are different sizes.

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