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Ionic Conduction in Ceria/sodium Carbonate Nano Composite Based Electrolyte

Ibrahim A Amar

Composite solid electrolytes (CSEs) are heterogeneous mixtures of at least two solid materials which exhibit high ionic conductivities, high stabilities (thermal and chemical) and enhanced mechanical strength [1, 2]. These unique properties make them suitable electrolyte materials for many solid-state electrochemical cells. In 1973, Liang [3] reported a remarkable enhancement of lithium iodide (LiI) ionic conductivity after adding a second phase of aluminium oxide (Al2O3). Since then, the ionic conductivities of many composite electrolytes including; halide/oxide, oxyacid salt/oxide and carbonate/oxide have been investigated. In recent years, ceria-based nanocomposites, in particular ceria-carbonate, have attracted more attention owing to their super-ionic conductivities (0.1 >S cm-1at above 300