Giant thermally-enhanced electrostriction and polar surface phase in La2Mo2O9 oxygen ion conductors
نویسندگان
چکیده
منابع مشابه
Suppressed phase transition and giant ionic conductivity in La2Mo2O9 nanowires
Improving the ionic conductivity of solid electrolytes at low temperatures represents a major challenge and an opportunity for enabling a variety of solid-state ionic devices for energy conversion and storage, as well as for environmental protection. Here we report a giant ionic conductivity of 0.20 Scm(-1), achieved at 500 °C, in the La2Mo2O9 nanowires with a bamboo-wire morphology, correspond...
متن کاملNature of the monoclinic to cubic phase transition in the fast oxygen ion conductor La2Mo2O9 (LAMOX).
La2Mo2O9 (LAMOX) is a fast oxygen ion conductor which shows high oxygen ion conductivities comparable to those of yttria-sabilized zirconia (YSZ). LAMOX is subject to a structural phase transition from the nonconductive monoclinic form to the highly conductive cubic form at about 580 degrees C. The origin of the conductivity in cubic LAMOX has been suggested to be due to a "disorder" in the O s...
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We discuss oxygen and cation diffusion processes in oxygen ion conductors. While the high oxygen diffusivity determines the proper oxygen ion conductivity, slow cation diffusion processes are important for sintering and degradation processes. In the first part of the paper we discuss an analytical model for the ionic conductivity of a strongly acceptor doped, fluorite-type oxygen ion conductor,...
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ژورنال
عنوان ژورنال: Physical Review Materials
سال: 2018
ISSN: 2475-9953
DOI: 10.1103/physrevmaterials.2.041403