( 1. 上海大学 上海市钢铁冶金重点实验室， 上海 200072;
2. 上海大学 理学院， 上海 200346)
摘 要: 采用改进的直接固相合成工艺， 制备了SrCe0.95-Yb0.05O3-α固体电解质。 应用AUTOLAB PGSTAT30型电化学工作站测定了不同温度和不同气氛下SrCe0.95-Yb0.05O3-α的阻抗谱， 在350~800℃内电导率为6.3×10-5～4.8×10-3 S/cm, 计算得到电导活化能分别为0.63eV(空气气氛下)， 0.46eV（水蒸气气氛下）。 研究结果表明， 该工艺方法简单， 能避免材料制备过程中杂质的混入， 且制得的SrCe0.95-Yb0.05O3-α高温质子导体电性能良好。
关键字: 固相合成法; 高温质子导体; 阻抗谱; 活化能
conductivity of SrCe0.95-Yb0.05O3-α protonic conduction
（ 1. Shanghai Key Laboratory for Ferrometallurgy, Shanghai University, Shanghai 200072, China;
2. School of Science, Shanghai University,
Shanghai 200346, China）
Abstract: SrCe0.95-Yb0.05O3-αwas prepared by direct solid-state reaction. The AC impedance spectrums of SrCe0.95-Yb0.05O3-α were measured by AUTOLAB PGSTAT30 electrochemical measuring device at different testing temperatures and gas atmospheres. The conductivity of the electrolyte was 6.3×10-5～4.8×10-3 S/cm at the temperature range of 350～800℃. The activation energies were 0.63eV and 0. 46eV in air and water vapor, respectively. The results show that the improved technique is convenient. It can keep impurity out of the preparing procedure. The prepared high temperature protonic conduction SrCe0.95-Yb0.05O3-αhas good electric performance.
Key words: solid-state reaction; high temperature protonic conduction; AC impedance spectrums; activation energies
