Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate

Yoshihiro Yamazaki; Chih Kai Yang; Sossina M. Haile

doi:10.1016/j.scriptamat.2010.12.034

Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate

Yoshihiro Yamazaki, Chih Kai Yang, Sossina M. Haile

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

A review of the experimental literature documenting water uptake in yttrium-doped barium zirconate in combination with new results obtained here show that much of the observed scatter can be explained in terms of barium deficiency, which furthermore induces a lowering in cell volume. In addition, through a comparison of weight changes under regular and heavy water vapor pressure, strong evidence is found for bulk oxidation of the oxide by water simultaneous with hydration.

Original language	English (US)
Pages (from-to)	102-107
Number of pages	6
Journal	Scripta Materialia
Volume	65
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2010.12.034
State	Published - Jul 2011

Keywords

Barium zirconate
Defect chemistry
Fuel cells
Proton-conducting oxides
Water uptake

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2010.12.034

Cite this

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title = "Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate",

abstract = "A review of the experimental literature documenting water uptake in yttrium-doped barium zirconate in combination with new results obtained here show that much of the observed scatter can be explained in terms of barium deficiency, which furthermore induces a lowering in cell volume. In addition, through a comparison of weight changes under regular and heavy water vapor pressure, strong evidence is found for bulk oxidation of the oxide by water simultaneous with hydration.",

keywords = "Barium zirconate, Defect chemistry, Fuel cells, Proton-conducting oxides, Water uptake",

author = "Yoshihiro Yamazaki and Yang, {Chih Kai} and Haile, {Sossina M.}",

note = "Funding Information: The authors thank Professor Tetsuya Uda for valuable discussions regarding the BaO–ZrO 2 –YO 1.5 ternary phase diagram. This work was supported by the Gordon and Betty Moore Foundation. Additional support was provided by the National Science Foundation through the Caltech Center for the Science and Engineering of Materials, a Materials Research Science and Engineering Center (DMR-052056). ",

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doi = "10.1016/j.scriptamat.2010.12.034",

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AU - Yamazaki, Yoshihiro

AU - Yang, Chih Kai

AU - Haile, Sossina M.

N1 - Funding Information: The authors thank Professor Tetsuya Uda for valuable discussions regarding the BaO–ZrO 2 –YO 1.5 ternary phase diagram. This work was supported by the Gordon and Betty Moore Foundation. Additional support was provided by the National Science Foundation through the Caltech Center for the Science and Engineering of Materials, a Materials Research Science and Engineering Center (DMR-052056).

PY - 2011/7

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N2 - A review of the experimental literature documenting water uptake in yttrium-doped barium zirconate in combination with new results obtained here show that much of the observed scatter can be explained in terms of barium deficiency, which furthermore induces a lowering in cell volume. In addition, through a comparison of weight changes under regular and heavy water vapor pressure, strong evidence is found for bulk oxidation of the oxide by water simultaneous with hydration.

AB - A review of the experimental literature documenting water uptake in yttrium-doped barium zirconate in combination with new results obtained here show that much of the observed scatter can be explained in terms of barium deficiency, which furthermore induces a lowering in cell volume. In addition, through a comparison of weight changes under regular and heavy water vapor pressure, strong evidence is found for bulk oxidation of the oxide by water simultaneous with hydration.

KW - Barium zirconate

KW - Defect chemistry

KW - Fuel cells

KW - Proton-conducting oxides

KW - Water uptake

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Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate

Abstract

Keywords

ASJC Scopus subject areas

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