(Plenary) Doing More with Less: Challenges for Catalyst Layer Design

This paper discusses key elements supporting continuing progress towards the achievement of the automotive PEMFC commercialization targets, in particular the reduction of total precious metal (PGM) content. An approach for PGM loading reduction without associated increase in mass transport loss is proposed, recent progress in advanced CL structural characterization/imaging is reviewed and the reliability of loss breakdown as guide for further performance improvement is discussed. A list of bulk and interface functionalities for the cathode catalyst layer is defined and the availability of measurement tools for the associated properties reviewed.