Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria
Doped CeO2 is a promising candidate for solid oxide fuel cell electrolyte and electrode applications because of its high ionic conductivity and reduction/oxidation behavior at intermediate temperatures. Its electronic and ionic properties and microstructural stability are of particular interest. The...
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| Format: | Article |
| Language: | en_US |
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Electrochemical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/81873 https://orcid.org/0000-0001-8339-3222 https://orcid.org/0000-0002-2688-5666 |
| _version_ | 1811073521138270208 |
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| author | Kuru, Yener Bishop, Sean Yildiz, Bilge Tuller, Harry L. Kim, Jae Jin |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Kuru, Yener Bishop, Sean Yildiz, Bilge Tuller, Harry L. Kim, Jae Jin |
| author_sort | Kuru, Yener |
| collection | MIT |
| description | Doped CeO2 is a promising candidate for solid oxide fuel cell electrolyte and electrode applications because of its high ionic conductivity and reduction/oxidation behavior at intermediate temperatures. Its electronic and ionic properties and microstructural stability are of particular interest. The present study demonstrates that the large number of oxygen vacancies created in PrxCe1-xO2-δ (PCO) at elevated temperatures can be accommodated at room temperature if cooling is performed in relatively low oxygen partial pressures (i.e. P(O2) ~ 10-3 mbar). We use the temperature dependence of the chemical expansion in reduced PCO as a metric to explore this phenomenon. |
| first_indexed | 2024-09-23T09:34:17Z |
| format | Article |
| id | mit-1721.1/81873 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:34:17Z |
| publishDate | 2013 |
| publisher | Electrochemical Society |
| record_format | dspace |
| spelling | mit-1721.1/818732023-02-26T02:56:00Z Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria Kuru, Yener Bishop, Sean Yildiz, Bilge Tuller, Harry L. Kim, Jae Jin Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Kuru, Yener Bishop, Sean Kim, Jae-Jin Yildiz, Bilge Tuller, Harry L. Doped CeO2 is a promising candidate for solid oxide fuel cell electrolyte and electrode applications because of its high ionic conductivity and reduction/oxidation behavior at intermediate temperatures. Its electronic and ionic properties and microstructural stability are of particular interest. The present study demonstrates that the large number of oxygen vacancies created in PrxCe1-xO2-δ (PCO) at elevated temperatures can be accommodated at room temperature if cooling is performed in relatively low oxygen partial pressures (i.e. P(O2) ~ 10-3 mbar). We use the temperature dependence of the chemical expansion in reduced PCO as a metric to explore this phenomenon. MIT Energy Initiative (Seed Fund Program) United States. Dept. of Energy (Office of Basic Energy Sciences, award DE SC0002633) Kwanjeong Educational Foundation (Korea) 2013-10-30T14:50:49Z 2013-10-30T14:50:49Z 2011 Article http://purl.org/eprint/type/JournalArticle http://hdl.handle.net/1721.1/81873 Kuru, Yener, Sean R. Bishop, Jae-Jin Kim, Bilge Yildiz, and Harry L. Tuller. “Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria.” ECS Transactions 35:1 (2011). p. 1131-1136. © 2011 ECS - The Electrochemical Society. https://orcid.org/0000-0001-8339-3222 https://orcid.org/0000-0002-2688-5666 en_US http://dx.doi.org/10.1149/1.3570094 ECS Transactions Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Electrochemical Society MIT Web Domain |
| spellingShingle | Kuru, Yener Bishop, Sean Yildiz, Bilge Tuller, Harry L. Kim, Jae Jin Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria |
| title | Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria |
| title_full | Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria |
| title_fullStr | Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria |
| title_full_unstemmed | Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria |
| title_short | Chemical Expansion and Frozen-In Oxygen Vacancies in Pr-Doped Ceria |
| title_sort | chemical expansion and frozen in oxygen vacancies in pr doped ceria |
| url | http://hdl.handle.net/1721.1/81873 https://orcid.org/0000-0001-8339-3222 https://orcid.org/0000-0002-2688-5666 |
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