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Measurement and modeling of electrical, mechanical, and chemical properties of a model mixed ionic electronic conductor: Pr doped Ceria

SR Bishop, JJ Kim, W Jung, TS Stefanik, M Qu… - ECS Trans, 2011 - electrochem.org
... solid oxide fuel cell (SOFC) electrolytes, such as acceptor doped CeO2, when exposed to a large
pO2 gradient (air to fuel), become mixed ionic and electronic conductors (MIEC), thereby reducing
the open circuit voltage, as well as expanding (chemical expansion), resulting in ...
Cited by 2 - Related articles - View as HTML - All 3 versions

Chemical expansion of nonstoichiometric Pr0. 1Ce0. 9O2-[delta]: Correlation with defect equilibrium model

SR Bishop, HL Tuller, Y Kuru… - Journal of the European Ceramic …, 2011 - Elsevier
Undoped and acceptor doped cerium dioxide is known to exhibit non-stoichiometry induced
chemical expansion at elevated temperatures and reducing environments with impact on the
mechanical integrity of solid oxide fuel cells and permeation membranes. In this paper, ...
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Thermal and chemical lattice expansibility of La sub (0. 6 Sr) sub (0). 4 Co sub (1- yFe) sub (y) O sub (3-[delta](y= 0. 2, 0. 4, 0. 6 and 0. 8))

SI Hashimoto, Y Fukuda, M Kuhn, K Sato… - Solid State Ionics, 2011 - csa.com
... is increased with increasing Co content in La sub (0. 6 Sr) sub (0). 4 Co sub (1- yFe) sub (y) O
sub (3-[delta] while chemical expansion coefficient[alpha]) sub (c) hem, which is proportional
constant for oxygen deficiency, shows very small dependence on the composition. ...

[PDF] Chemomechanical properties and microstructural stability of nanocrystalline Pr-doped ceria: an in situ X-ray diffraction investigation

[PDF] from mit.eduY Kuru, SR Bishop, JJ Kim, B Yildiz… - Solid State Ionics, 2011 - mit.edu
... The chemical expansion coefficient of nanocrystalline powder specimens, operative
at intermediate temperatures during which Pr4+ is reduced to Pr3+, is found to be
similar to that obtained for coarse-grained PrxCe1 − xO2 − δ. ...
Cited by 2 - View as HTML

Influence of flue gas components on the chemical properties of the ceramic materials (Co-) Ce0, 8Gd0, 2− xPrxO2− δ

J Schneider, C Semmler, C Kaps… - IOP Conference …, 2011 - iopscience.iop.org
... The gassing with SO2 containing test gases causes a chemical expansion of the lattice
in dependence of Pr content x due to a release of oxygen. Also small amounts of
sulphate were found in the gassed samples. A small content ...
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