Mized dopant effect in SrZrO3-based proton conductor

摘要：

The infrared diffuse reflectance spectra in the O-H stretching vibration, v(oh), region and the electrical conductivities of Sr(Zr0.92Y0.08-xScx)O3-δ and Sr(Zr0.92Y0.08-xGax)O3-δwere studied. Whereas the dissolution environment of the proton and the dopant in the terminal compounds was maintained in the Sr(Zr0.92Y0.08-xGax)O3-δ, distinctly different proton sites from those in the terminal Sr(Zr0.92Y0.08-xGax)O3-δand Sr(Zr0.92Y0.08-xGax)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.

关键词： Proton conductor Infrared spectroscopy Dopant segregation Proton dissolution environment

作者: Takahisa Omata Tomonao Fuke Shinya Otsuka-Yao-Matsuo

作者单位: Division of Materials Science and Manufacturing, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 1116-1119

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）