采用无机胶化工艺制备了球状的、分散性好且粒度分布较窄的几种ZrO2基粉末.经干压成型和烧结后制备成陶瓷质电解质材料.通过XRD显微结构等分析,显示所得的样品均为立方相结构.在1 450℃烧结的样品已近完全致密.1 450～1 550℃烧结的8YbSZ在450 ～700℃测试范围内具有比其他的ZrO2基材料更高的离子电导率.在550℃的操作温度下8YbSZ的电导率达0.001 S·cm-1,适合于作为中温固体电解质的材料.%Homogeneous, spherical anrl well distributed ZrO2 - based powders were prepared by using a combined process which called co - precipitation and inorganic sol - gel. The ceramic electrolytes materials were obtained by compaction and pressureless sintering. Near full density was realized al I 450 °C. The results shown that the materials are full -cubic stabilized ZrO2 by using XRD and microslructure analysis. The ionic conductivity of 8YbSZ is higher than other ZrO2 - based electrolytes materials when sintered in temperature range of 1 450 - 1 550 ℃, for 450 -700 ℃ testing range. The value of conductivity already has reached 1. 7 × 10-2 S· cm -1 when operated at 700 ℃. All above indicated that 8YbSZ is a better candidate for the electrolyte material of intermediate temperature solid oxide fuel cells.
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