Development History and Future Design of Reduction of Pt in Catalyst Layer and Improvement of Reliability for Polymer Electrolyte Fuel Cells

Abstract

The key point of the MEA development is how to promote the reaction on the surface of the platinum catalyst in the catalyst layer. To increase the reaction area that can contribute to the catalyst reduction, the supply channels of oxygen and hydrogen to the reactive sites, the conductive channels of the proton and the exit paths for the generated water become important. The development history and the future design of both the reduction of Pt in the catalyst layer and the improvement of the reliability for PEFCs were described chiefly.