Optimization of transport properties of a-site ordered LnBa 1-xSrxCo2-yFeyO5+δ perovskite-type cathode materials

Konrad Świerczek, Kun Zheng, Alicja Klimkowicz

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Choice of an appropriate chemical composition in a group of Asite ordered LnBa1-xSrxCo2-xFexO 5+δ (Ln - selected lanthanides, Y) oxides may allow to obtain novel, potential cathode materials for IT-SOFC having desirable physicochemical properties, which can surpass those of typical Ln1-xSr xCo1-yFeyO3-δ perovskites. Layered ordering in A sublattice (Ln-Ba1-xSrx), resulting from a significant difference between ionic radii, is observed for compounds having smaller Ln cations, even for a substantial substitution of Ba by Sr. Materials with a high Co content exhibit very high mixed ionicelectronic conductivity and substantial deviation from oxygen stoichiometry, while increase of Fe content improves stability and decreases thermal expansion. The observed relationship between structural properties, oxygen nonstoichiometry and transport properties is discussed.

本文言語English
ページ(範囲)1993-2001
ページ数9
ジャーナルECS Transactions
57
1
DOI
出版ステータスPublished - 2013
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

「Optimization of transport properties of a-site ordered LnBa <sub>1-x</sub>Sr<sub>x</sub>Co<sub>2-y</sub>Fe<sub>y</sub>O<sub>5</sub>+δ perovskite-type cathode materials」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル