Materials, methods and priorities for the development of the hydrogen value chain.

Hydrogen is seen as one of the most promising energy carriers to enable the deep decarbonization of our society, contributing to the development of a resilient energy system. Research will be a key driver to develop novel solutions and technologies provided with high performances, lower costs, without critical raw materials: from production, to handling and storage, to end uses. Advanced materials for electrolysis, novel technologies with innovative functionalities, breakthrough solutions will require dedicated support to enable a hydrogen sector in line with the European policies underway. Several key solutions will leverage the conversion efficiency of electrolysis up and beyond 80%, reducing the need for scarce or costly materials such as iridium or other transition metals. Novel solutions can directly produce hydrogen splitting water from direct solar radiation. New proton conductive ceramic cells can add functionalities to hydrogen production such as compression, purification, separation of hydrogen or co-electrolysis processes. Mature technologies can be then improved through novel collaboration schemes between research and industry, enabling a levelized cost of hydrogen compatible with the market needs. This will change the perspective of having a novel, clean, diffuse gas sector in form of 100% hydrogen.