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US 2005/0112445 A1Published application
PEM fuel cell stack with coated flow distribution network
AssigneeGeneral Motors Corporation
InventorThomas Trabold
Life of this patent
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Abstract
A fuel cell and a method for manufacturing a fuel cell including a membrane electrode assembly that includes an ionically conductive member and an electrode disposed at the ionically conductive member. Further, the fuel cell includes an electrically conductive member or gas diffusion medium that includes a flow field formed of conductive particles dispersed in a binder.
Claims28
A fuel cell comprising:
- a membrane electrode assembly including an ionically conductive member and at least one electrode disposed at said ionically conductive member;
- and
- an electrically conductive member adjacent said electrode and having a major surface with a flow field pattern patterned thereon defined by lands, said lands comprising conductive particles dispersed in a binder.
A method of manufacturing a fuel cell comprising:
- forming an electrically conductive fluid distribution element by depositing electrically conductive material on at least two spaced apart regions of a surface of a conductive substrate thereby defining lands in said regions;
- and
- arranging a membrane electrode assembly and said fluid distribution element adjacent one another to form a fuel cell assembly.
A fuel cell comprising:
- a membrane electrode assembly including an ionically conductive member and at least one electrode disposed at said ionically conductive member;
- and
- an electrically conductive member adjacent said electrode and having a major surface with material deposited thereon forming a flow field pattern on said major surface.
Dependencies are inferred from the claim text.