Defect chemistry and oxygen permeation property of Pr2Ni0.75Cu0.25O4 oxide doped with Ga

Tatsumi Ishihara, Kenichi Nakashima, Sachio Okada, Makiko Enoki, Hiroshige Matsumoto

研究成果: Contribution to journalArticle査読

76 被引用数 (Scopus)

抄録

Mixed conductivity and oxygen permeation property in Pr2Ni0.75Cu0.25Ga0.05O4 were investigated. After examining various Ga concentrations, it was found that cation excess composition of Pr2Ni0.75Cu0.25Ga0.05O4 achieved the highest oxygen permeability of 298 μmol·min- 1·cm- 2 (6.68cc·min- 1·cm- 2) at 1273 K from air to He with a 0.5 mm thickness. The oxygen permeability of Pr2Ni0.75Cu0.25Ga0.05O4 increased with increasing the activity of surface catalyst and the highest permeation was achieved when La0.9Sr0.1Co0.8Fe0.2O3 was used for the surface catalyst. The oxygen nonstoichiometry was further studied by using thermogravimetry. It was confirmed that the excess amount of oxygen was introduced at high PO2 range, which might be the origin of the high oxygen permeation rate in this oxide.

本文言語英語
ページ(範囲)1367-1371
ページ数5
ジャーナルSolid State Ionics
179
27-32
DOI
出版ステータス出版済み - 9 30 2008

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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「Defect chemistry and oxygen permeation property of Pr<sub>2</sub>Ni<sub>0.75</sub>Cu<sub>0.25</sub>O<sub>4</sub> oxide doped with Ga」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。

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