Ford Motor Company Limited

Daimler Ag

Tran Ngo

Scott McDermid

Carmen Chuy

Kyoung J Bai

A membrane electrode assembly for a fuel cell, with a membrane, a catalyst layer () and a gas diffusion layer. The catalyst layer () has a first side facing the membrane and a second side facing the gas diffusion layer. In the catalyst layer () an ionomer content increases towards the membrane. The catalyst layer () has a first sublayer () in which catalyst particles () are coated with a first ionomer (). The catalyst layer () further has a second sublayer () with a second ionomer () which is closer to the membrane than the first sublayer (). Pores () are present at least between the coated catalyst particles (). Further, a method for preparing such a membrane electrode assembly, a fuel cell system and a vehicle with a fuel cell system.

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Tran Ngo