The invention relates to a membrane electrode assembly for a fuel cell, with a membrane, a catalyst layer (16) and a gas diffusion layer. The catalyst layer (16) has a first side facing the membrane and a second side facing the gas diffusion layer. In the catalyst layer (16) an ionomer content increases towards the membrane. The catalyst layer (16) comprises a first sublayer (22) in which catalyst particles (26) are coated with a first ionomer (28). The catalyst layer (16) further comprises a second sublayer (24) with a second ionomer (32) which is closer to the membrane than the first sublayer (22). Pores (30) are present at least between the coated catalyst particles (26). The invention further relates to a method for preparing such a membrane electrode assembly, to a fuel cell system and to a vehicle with a fuel cell system.
MEMBRANE ELECTRODE ASSEMBLY FOR A FUEL CELL, METHOD FOR PREPARING THE MEMBRANE ELECTRODE ASSEMBLY, FUEL CELL SYSTEM AND VEHICLE
DISPOSITIF D'ELECTRODE A MEMBRANE POUR UNE PILE A COMBUSTIBLE, PROCEDE DE PREPARATION DU DISPOSITIF D'ELECTRODE A MEMBRANE, PILE A COMBUSTIBLE ET VEHICULE
2016-05-28
Patent
Elektronische Ressource
Englisch
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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