Mechanism, Design Concept, and Structural Characteristics (IMAGE)

_Tokyo Institute of Technology

Mechanism, Design Concept, and Structural Characteristics

Caption

(a) The oxide-ion conductivity of CsBi2Ti2NbO10?δ is higher than those of many materials reported previously. (b) By screening sixty-nine potential materials using the bond-valence method, CsBi2Ti2NbO10?δ was selected. A new design concept for its high oxide-ion conductivity is proposed: enlarged bottlenecks. (c) Structure of CsBi2Ti2NbO10?δ (left) and the bond-valence-based energy landscape for an oxide ion at 0.6 eV (right), which marks all the possible migration paths. The bottlenecks for oxide-ion migration are enlarged in CsBi2Ti2NbO10?δ.

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Tokyo Tech

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