Electrode gas diffusion layer assembly with controlled binder content and fuel cell stack including the same
AssigneesHyundai Motor Company, Kia Corporation
InventorsWoo Jin Lee, Young June Park, Jong Jin Yoon, In Woo Jang
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Abstract
Disclosed are an electrode gas diffusion layer assembly (EGA) and a fuel cell stack including the same. The content of the binder in the electrode and the content of the binder in the adhesive layer that attaches the electrode to the gas diffusion layer (GDL) may be optimized. Thus, it is possible to reduce the occurrence of flooding and the deterioration in durability/performance caused by a dry atmosphere in the EGA including the electrode and the adhesive layer, so that the output density per unit area is improved while the trade-off is minimized.
Claims16
An electrode gas diffusion layer assembly (EGA) comprising:
- an electrolyte membrane;
- an electrode disposed on the electrolyte membrane;
- an adhesive layer disposed on the electrode;
- and
- a gas diffusion layer (GDL) disposed on the adhesive layer,
- wherein:
- the electrode comprises a first region having a predetermined area, and a second region extending from one end of the first region;
- the adhesive layer comprises a third region having a predetermined area, and a fourth region extending from both ends of the third region;
- the electrode and the adhesive layer are stacked on each other so that the extending direction of the second region and the extending direction of the fourth region cross each other;
- and
- a content of a first binder in the first region is greater than a content of a second binder in the second region, or a content of a third binder in the third region is less than a content of a fourth binder in the fourth region.
Dependencies are inferred from the claim text.