期刊
SOLID STATE IONICS
卷 225, 期 -, 页码 194-197出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2012.02.029
关键词
Mixed conductor; SOFC; Cathode; Chemical expansion; Optical absorption; Nonstoichiometry
资金
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0908627] Funding Source: National Science Foundation
Praseodymium doped ceria, PrxCe1-xO2 - delta (PCO), exhibits many interesting and unusual properties including a pO(2) dependent ionic conductivity, an anomalously large thermal expansion coefficient in air, and a significant electronic conductivity component at elevated pO(2). These unusual features are discussed in terms of the variable valent nature of Pr at elevated pO(2), its position within the ceria band gap and the creation of an impurity band supporting small polaron transport. Implications for use of PCO as a ceria solid electrolyte compatible cathode, stress induced chemical expansion and optically detected redox kinetics are analyzed and discussed. (c) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据