For the market expansion of polymer electrolyte membrane fuel cell (PEMFC) system, decrease or replacement of Pt in the membrane electrode assembly (MEA) has been pursued for a several decades, because of expensive cost and limited abundance of Pt. While several candidate catalysts based on Pd alloy toward oxygen reduction reaction (ORR) have been suggested, the durability of Pd alloy catalyst under acidic condition is not enough to fulfill the requirement of MEA. In this presentation, the improvement of durability and activity of Pd alloy catalyst by core-shell approach using galvanic replacement will be discussed. Furthermore, the durability of Pt-free MEA with improved Pd alloy catalyst and novel Ru-based anode catalyst will be presented, which can be operated over than 1000 h at 150�C for high temperature PEMFC.

Membrane electrode assembly with durable Pt-free catalyst for high temperature PEMFC

245th National Meeting (2013)

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