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

Yamazaki, Yoshihiro and Yang, Chih-Kai and Haile, Sossina M. (2011) Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate. Scripta Materialia, 65 (2). pp. 102-107. ISSN 1359-6462. https://resolver.caltech.edu/CaltechAUTHORS:20110623-085240138

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.scriptamat.2010.12.034 DOIArticle
http://www.sciencedirect.com/science/article/pii/S135964621000864XPublisherArticle
ORCID:
AuthorORCID
Haile, Sossina M.0000-0002-5293-6252
Additional Information:© 2011 Acta Materialia Inc. Published by Elsevier Ltd. Received 7 October 2010; accepted 22 December 2010. Available online 28 December 2010. The authors thank Professor Tetsuya Uda for valuable discussions regarding the BaO–ZrO2–YO1.5 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).
Funders:
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
NSFDMR-0852056
Subject Keywords:Proton-conducting oxides; Barium zirconate; Water uptake; Defect chemistry; Fuel cells
Issue or Number:2
Record Number:CaltechAUTHORS:20110623-085240138
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110623-085240138
Official Citation:Yoshihiro Yamazaki, Chih-Kai Yang, Sossina M. Haile, Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate, Scripta Materialia, Volume 65, Issue 2, Viewpoint set no. 48: Solid Oxide Fuel Cells, July 2011, Pages 102-107, ISSN 1359-6462, DOI: 10.1016/j.scriptamat.2010.12.034. (http://www.sciencedirect.com/science/article/pii/S135964621000864X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24176
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:23 Jun 2011 17:26
Last Modified:03 Oct 2019 02:53

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