| Abstract Scope |
For a sustainable society we will need green fuels for aviation and shipping. This requires sustainable routes to hydrogen. Solid oxide electrolysis cells (SOEC) offer here an attractive route, but improvements are needed with respect to scale, durability, and cost. Here, recent achievements on the material side furthering SOEC technology are presented.
Upscaling of SOEC requires mechanically tough cells. Progress on optimizing the composition of the zirconia in the Ni-zirconia supports to maximize strength and toughness are presented. Whereas reducing temperature of operation will slow down degradation processes and allow use of cheaper materials it will call for better electrodes. Recent in-sight to what limits performance of (La,Sr)FeO3 based oxygen electrodes, the role of the surface chemistry, and how to boost their performance will be presented. Finally, ceria infiltration as a route to improve fuel electrode performance and durability and how to implement this will be discussed. |