The membrane electrode assembly for a fuel cell, method of manufacturing the membrane electrode assembly, fuel cell system and vehicle
2015
The invention relates to a membrane electrode assembly for a fuel cell having a membrane, a catalyst layer (16) and a gas diffusion layer. The catalyst layer (16) has a first side that faces the membrane, and a second side, facing the gas diffusion layer. In the catalyst layer (16) is a ionomer to the membrane increases towards. The catalyst layer (16) comprises a first partial layer (22) in which catalyst particles (26) with a first ionomer (28) are coated. The catalyst layer (16) further comprises a second partial layer (24) with a second ionomer (32) which is closer to the membrane than the first partial layer (22). Pores (30) are present at least between the coated catalyst particles (26). The invention further relates to a method for producing such a membrane electrode assembly, a fuel cell system and a vehicle having a fuel cell system.
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