A Rotating Electrolyte Disc (RED) for Operation in Liquid Metal Electrode Solid Oxide Fuel Cells

for Oral Presentation Tailoring in situ growth of nanoparticles towards applications Dragos Neagu and John T.S. Irvine University of St Andrews, St. Andrews, KY16 9ST, Scotland, United Kingdom. Surfaces decorated with nanoparticles play a key role in many fields including renewable energy and catalysis and are typically prepared by deposition techniques. Here we show that, alternatively, particles could be grown in situ, directly from a perovskite support though judicious choice of composition, particularly by tuning deviations from the ideal ABO3 stoichiometry. 1 This concept seems to enable unprecedented control over particle composition, size, distribution, surface coverage and anchorage, and may serve to design sophisticated materials for several applications. A few examples are presented to illustrate the type of particles and microstructures that can be produced but also the factors that control this phenomenon. Examples of specific applications are also addressed, including the production of alloy nanoparticles, metal-ceramic interfaces and H2 production from high temperature steam electrolysis with in situ exsolution of catalytically active nanoparticles during operation.