Hydrogen is one of the key energy carriers for sustainable systems where intermittent renewables, e.g. solar and wind, are primary energy sources. Hydrogen is needed for long-term storage of electric power and to interlink the renewable electricity to transportation and chemical industry sectors. The CIRCLE project investigates up-scaling of synthesis processes for and demonstration of critical raw material free or lean catalysts for electrochemical water decomposition to hydrogen and oxygen.
We have constructed a state-of-the-art hydrolyzer cell together with our industrial collaborator. Moreover, we have up-scaled (i) a reactor for producing critical raw material free transition metal – carbon catalysts and developed synthesis methods for producing catalysts (ii) comprising of nitrogen and carbon and a catalyst (iii) with ultra-low Pt content. In particularly the latter material has shown promising activity and stability in the water splitting reactor.