STACK TECHNOLOGY FOR CERAMIC PROTON CONDUCTORS

High temperature ceramic proton conductors (HTPC) are in principle superior to PEM and standard SOFC conductors for use in steam electrolysers and hydrogen fuel cells because of the water-free transport of protons; the steam used or formed is associated w ith the oxygen/air side, and thus, dry hydrogen is formed or consumed. This simplifies the system and improves efficiency. The project is based on a Norwegian patent of a new class of HTPC; accceptor doped rare earth niobates and tantalates, that are chem ically stable due to non-basicity and mechanically robust due to ferroelasticity. In complement to other projects, this will develop stack technology needed to develop electrolysers and fuel cells; metallic interconnects, sealants and housing compatible w ith the new electrolytes and their associated new electrodes. The project involves groups at UiO, NTNU, and SINTEF, lasts for 3.5 years, and educates 2 PhD candidates.