High Conductivity and Diffusion Mechanism of Oxide Ions in Triple Fluorite-Like Layers of Oxyhalides
Nachi Ueno,
Hiroshi Yaguchi,
Kotaro Fujii
et al.
Abstract:Oxide ion conductors are attractive materials because
of their
wide range of applications, such as solid oxide fuel cells. Oxide
ion conduction in oxyhalides (compounds containing both oxide ions
and halide ions) is rare. In the present work, we found that Sillén
oxychlorides, Bi2–x
Te
x
LuO4+x/2Cl (x = 0, 0.1, and 0.2), show high oxide ion conductivity. The bulk conductivity
of Bi1.9Te0.1LuO4.05Cl reaches 10–2 S cm–1 at 431 °C, which is
much lower than 644 °C of yttria-stabilized zirconia (YSZ) and
534 °C of… Show more
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