Structure-property relationships in fluorite-type Bi2O3-Yb2O3-PbO solid-electrolyte materials

被引：1
|
作者：
Webster, Nathan A. S. [1 ]
Ling, Chris D. [2 ]
Lincoln, Frank J. [3 ]
机构：
[1] CSIRO Mineral Resources Flagship, Clayton, Vic 3169, Australia
[2] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia
[3] Univ Western Australia, Sch Chem & Biochem, Crawley, WA 6009, Australia
来源：
POWDER DIFFRACTION | 2014年 / 29卷
关键词：
Bi2O3-based oxide ion conductors; X-ray diffraction; structure and conductivity evolution; OXIDE-ION CONDUCTORS; CONDUCTIVITY; PHASE; LN; BI17YB7O36; BIYBO3; GD; SM;
D O I：
10.1017/S0885715614001079
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
New quenched-in face-centred cubic fluorite-type materials were synthesised in the Bi2O3-Yb2O3-PbO system. After annealing in air at 500 degrees C for up to 200 h, each material underwent a conductivity-lowering structural transformation, thus making them unsuitable for use as solid electrolytes in solid-oxide fuel cells. For example, (BiO1.5)(0.80)(YbO1.5)(0.17)(PbO)(0.03) underwent a fluorite- to Bi17Yb7O36-type orthorhombic transformation, indicative of long-range cation ordering, and (BiO1.5)(0.80)(YbO1.5)(0.11)(PbO)(0.09) underwent a fluorite- to beta-Bi2O3-type tetragonal transformation, indicative of long-range < 001 > oxide-ion vacancy ordering. (C) 2014 International Centre for Diffraction Data.
引用
收藏
页码：S73 / S77
页数：5
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