Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1297246 | Solid State Ionics | 2008 | 9 Pages |
Abstract
Quenched-in fcc fluorite-type materials in the Bi2O3–Er2O3–PbO system were annealed in air at 500 and 600 °C for up to 2000 h. Each material experienced a conductivity-lowering structural transformation, thus making them unsuitable for use in SOFCs. For example, the materials (BiO1.5)0.80(ErO1.5)0.20−x(PbO)x, x = 0.03, 0.06 and 0.09, underwent a fluorite-type to tetragonal transformation during annealing at 500 °C due to 〈100〉 oxide-ion vacancy ordering, and the rate of conductivity decay at 500 °C increased with increasing Pb2+/Er3+ ratio.
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Nathan A.S. Webster, Chris D. Ling, Colin L. Raston, Frank J. Lincoln,