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US 2006/0064867 A1Published application
Method for preassembly of membrane electrode assemblies and assembly of proton exchange membrane fuel cell stacks
OwnerWilliam Richardsinventor
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Abstract
A single membrane electrode assembly (MEA) is assembled from an anode side gas diffusion media (GDM), a rigid precision thickness plastic gasket, a complementary cathode side gas diffusion media and another rigid precision thickness plastic gasket. The MEA preassembly is assembled with outer protective plastic film layers that are removed prior to the assembly of the MEAs, which are sandwiched between successive bi-polar plates in a multicell proton exchange membrane fuel cell (PEMFC) stack configuration.
Claims6
A method of assembling a membrane electrode assembly (MEA) preassembly, comprising the steps of:
- aligning a first gas diffusion media within a cutout portion of a first gasket on dowel pins of an alignment fixture;
- placing a MEA in alignment with respect to said first gasket and said first gas diffusion media on said alignment fixture so that one side of the MEA is in contact with said first gas diffusion media;
- positioning a second gas diffusion media within a cutout portion of a second gasket on the dowel pins of said alignment fixture on the other side of said MEA to provide a MEA preassembly.
Dependencies are inferred from the claim text.