Slow relazation kinetics of Sr(Zr, Y)O3 in wet atmosphere

摘要：

The electrical conductivity of SrZr0.9Y0.1O3-δ was measured as a function of temperature and gas partial pressure. Extremely slow conductivity relaxation was observed below 973 K. This is attributed to slow water incorporation/evolution reaction. Unexpectedly, measured electrical conductivities increased with decrease in temperature at temperatures lower than 1023 K. Proton and oxide ion conductivities were deconvoluted from the total conductivity by simple defect-chemical analysis. At low temperatures, the actual proton conductivity was found to be several times higher than those reported.

关键词： Proton conductor Slow relazation process Electrical conductivity Water vapor pressure Strontium zirconate

作者: Takao Kudo Keiji Yashiro Hiroshige Matsumoto Kazuhisa Sato Tatsuya Kawada Junichiro Mizusaki

作者单位: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, A Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, F Graduate School of Environmental Studies, Tohoku University, 6-6-20, Aramaki Aza Aoba, Aoba-ku, Send

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: 851-854

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）