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| Home > Publications database > Pr$_x$Ce$_ {1-x}$O$_{2-\delta}$ as a functional material for SOCs |
| Home > Publications database > Pr$_x$Ce$_ {1-x}$O$_{2-\delta}$ as a functional material for SOCs |
| Poster (Other) | FZJ-2016-04373 |
; ; ;
2016
Please use a persistent id in citations: http://hdl.handle.net/2128/12215
Abstract: Solid oxide cells (SOCs) offer the possibility to reversibly convert fuel (such as H2 or CH4 gas) into electricity (fuel cells) or electricity into fuel (electrolyzers). Gadolinium-doped ceria (GDC) is currently used as a Sr-diffusion barrier in state-of-the-art anode supported cells (ASC), and is investigated as an electrolyte for low-temperature applications. In contrast to GDC, Praseodymium-doped ceria (PCO) is a mixed ionic-electronic conductor (MIEC) in air due to the mixed Pr3+/Pr4+ valence state, and therefore interesting as an active component on the air side of SOCs. It has been suggested from work on model systems that PCO could show a comparable performance to La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF).1 In the present work, we investigate the structural and electrochemical properties of PCO ceramics, as well the performance as an alternate cathode material and Sr-diffusion barrier for the use in SOCs.
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