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首页> 外文会议>8th Asian Conference on Solid State Ionics: Trends in the New Millennium; Dec 15-19, 2002; Langkawi, Malaysia >PREPARATION AND CHARACTERIZATION OF SOLED ELECTROLYTE CERAMIC OF SrCe_(1-x)Zr_xO_3 DOPED Y_2O_3 AS PROTONIC CONDUCTOR AT HIGH TEMPERATURE
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PREPARATION AND CHARACTERIZATION OF SOLED ELECTROLYTE CERAMIC OF SrCe_(1-x)Zr_xO_3 DOPED Y_2O_3 AS PROTONIC CONDUCTOR AT HIGH TEMPERATURE

机译：质子导体SrCe_（1-x）Zr_xO_3掺杂Y_2O_3的溶质电解质陶瓷的制备与表征

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摘要

These ceramics with formula Sr(Ce_(1-x)Zr_x)_(0.9)Y_(0.1)O_(2.95) (x=0, 0.25, 0.5, 0.75 and1) prepared by solid-state reaction. Powder X-ray diffraction analysis of the samples showed single phase with orthorhombic perovskite type structure except the sample with x=0.75. The samples exhibited the highest relative density of the sintered pellets were 97.88% measured by the geometry method. The electric conductivity of samples was then investigated by impedance spectroscopy using high frequency response analyzer (HFRA). The impedance spectra were recorded for frequencies in the range of 1 Hz to 10 Mhz in the temperature range of 400℃ to 900℃ in wet and dry nitrogen. The oxides showed the highest conductivities with a value 7.14 x 10~(-3) Scm~(-1) in wet nitrogen and 8.01 x 10~(-3) Scm~(-1) in dry nitrogen both at 900℃. Emf measurements were carried out using the samples as a solid electrolyte in hydrogen concentration cell. The emf of hydrogen concentration cell exhibited the highest protonic conduction in the sample with proton transport numbers with a value 0.78 at 800℃ and 900℃.
机译：通过固态反应制备的这些具有式Sr（Ce_（1-x）Zr_x）_（0.9）Y_（0.1）O_（2.95）（x = 0、0.25、0.5、0.75和1）的陶瓷。样品的粉末X射线衍射分析表明，除了x ＝ 0.75的样品以外，具有正交晶钙钛矿型结构的单相。通过几何方法测得样品显示出最高的相对密度，为97.88％。然后，使用高频响应分析仪（HFRA）通过阻抗谱研究样品的电导率。在湿氮气和干氮气中，在400到900℃的温度范围内，记录了1 Hz至10 Mhz范围内的频率的阻抗谱。在900℃下，氧化物在湿氮气中的电导率最高，为7.14 x 10〜（-3）Scm〜（-1），在干氮气中的电导率最高为8.01 x 10〜（-3）Scm〜（-1）。使用样品作为氢浓缩池中的固体电解质进行电动势测量。氢浓缩池的电动势在样品中表现出最高的质子传导性，质子迁移数在800℃和900℃时为0.78。

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