Oxide ion conductivity and oxygen vacancy diffusion coefficient of stabilized zirconia and doped ceria based on classical defect chemistry with particular focus on the valence state (2+, 3+, and 4+) of dopant cations

2026-05-07

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Junichiro Mizusaki

DOI：10.1016/j.ssi.2026.117225

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Abstract

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• Conductivity decrease with the dopant concentration increase was discussed. • By heavy doping of cations, activation energy of oxide ion vacancy increases. • Divalent cation doping tends to enhance the activation energy increase. • Tetravalent cation doping also enhance the activation energy, as in ceria-zirconia solid solutions.

Keywords:

oxide ion conductivity

oxygen vacancy diffusion

dopant valence state

stabilized zirconia

doped ceria

Oxide ion conductivity and oxygen vacancy diffusion coefficient of stabilized zirconia and doped ceria based on classical defect chemistry with particular focus on the valence state (2+, 3+, and 4+) of dopant cations

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