The conductivity of co-dopant ceria electrolyte

Abstract

A kind of novel ceria electrolyte was examined. Various trivalent oxides were added as co-dopants to Ce _0.8Gd _0.2O _1.9, and their effects on the conductivity of ceria electrolyte were discussed. It has been found that the co-dopant of trivalent oxides of Sm, Nd, La and Y improves the ionic conductivity notably. Furthermore, the fine original powders, co-dopant and higher sintering temperature may hasten the sintering.

Keywords

solid oxide fuel cell / gadolinia-doped ceria / co-dopant / impedance spectrum / ionic conductivity

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