The proposed 24-month fellowship aims to reintegrate the researcher, Dr. Carlos Romero Villarreal, in Europe after 3.5 years in New Zealand. He will address the feasibility of using powder metallurgy (PM) approaches and coatings to process highly efficient, lightweight bipolar plates (BP) for PEM fuel cells (FC) based on porous flow fields. This fellowship will be carried out in the Universidad Carlos III de Madrid (UC3M), in Spain, under the supervision of Professor Elena Gordo Odériz. As part of this, the researcher will carry out a 6-month secondment in ArcelorMittal, the world’s leading steel manufacturer, under the co-supervision of Dr. Domínguez and Dr. Botas. The scientific objective of the proposal is to develop materials for metallic BP based on porous flow fields that have low density in order to reduce considerably the weight of PEMFCs while keeping a high performance, to increase the energy efficiency of transportation systems. This contributes to key EU and UN objectives like low-carbon and climate-neutral economies. The low-density candidate materials are titanium and Ti-based MAX phases, which have good mechanical and conductive properties. These materials will be processed using PM techniques that allow the fabrication of dense and porous materials. To improve their performance, corrosion-resistant and electrically-conductive coatings based on TiN and graphene will be developed. The mechanical, conductive and corrosion properties of these materials will be characterised to assess if they achieve the PEMFC target properties. Along with the training in the relevant scientific skills, this proposal also has the objective to establish Dr. Romero as an independent researcher by training in several transferable skills key for academic and industrial environments such as leadership, teaching and supervision, project management, IPR and knowledge transfer and scientific communication (especially to non-specialist audiences).