Probing the Local Structure-Property Relationship in the IMSSZ Oxide Ion Conductor

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The current state-of-the-art solid oxide fuel cell (SOFC) electrolyte material, 8 mol% yttria stabilised zirconia (8YSZ), exhibits good performance at temperatures above 850 °C. Scandia-stabilised zirconia (SSZ) offers much higher ionic conductivity than YSZ, but there are questions about high cost and long-term stability of this material. Our recent work on (Mg, In) co-doped SSZ showed an increase in ionic conductivity with annealing time. This is unusual as in general, ionic conductivity usually decreases with...
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