Mixed dopant effect in SrZrO3-based proton conductor

Takahisa Omata, Tomonao Fuke, Shinya Otsuka-Yao-Matsuo

研究成果: Article査読

8 被引用数 (Scopus)

抄録

The infrared diffuse reflectance spectra in the O-H stretching vibration, νOH, region and the electrical conductivities of Sr(Zr0.92Y0.08 - xScx)O3 - δ and Sr(Zr0.92Y0.08 - xGax)O3 - δ were studied. Whereas the dissolution environment of the proton and the dopant in the terminal compounds was maintained in the Sr(Zr0.92Y0.08 - xScx)O3 - δ, distinctly different proton sites from those in the terminal Sr(Zr0.92Y0.08)O3 - δ and Sr(Zr0.92Ga0.08)O3 - δ appeared in the Sr(Zr0.92Y0.08 - xGax)O3 - δ. The electrical conductivity of the Sr(Zr0.92Y0.08 - xScx)O3 - δ showed a very small increase upon substitution of Y by Sc. The small increase in conductivity for the Sc-doped case was discussed from the viewpoint of proton mobility. For the Sr(Zr0.92Y0.08 - xGax)O3 - δ, the conductivity decreased over an order of magnitude by the substitution of Y by Ga. This decrease in conductivity for the Ga-doped case was attributed to the decrease in the proton concentration.

本文言語English
ページ(範囲)1116-1119
ページ数4
ジャーナルSolid State Ionics
179
21-26
DOI
出版ステータスPublished - 2008 9 15
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

フィンガープリント

「Mixed dopant effect in SrZrO<sub>3</sub>-based proton conductor」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