阳极支撑SSZ电解质膜的水热法制备  

Preparation of anode supported SSZ electrolyte film by hydrothermal method

作　　者：周贤界[1] 徐华蕊[1] 朱归胜[1] 

机构地区：[1]桂林电子科技大学信息材料科学与工程系,广西桂林541004

出　　处：《电源技术》2008年第2期84-86,共3页Chinese Journal of Power Sources

基　　金：国家"863"计划(2003AA32X140);广西"新世纪十百千人才工程"专项(2003214)

摘　　要：采用水热法制备固体氧化物燃料电池(SOFC)阳极支撑的SSZ(Sc2O3稳定的ZrO2)电解质膜,研究了沉淀剂及阳极性质、水热前驱体、pH值、水热时间与温度等诸多因素对SSZ水热膜的影响,确定了最佳工艺条件。研究表明:得到的SSZ电解质膜呈立方晶型,且纯度高、与阳极结合紧密,厚度均匀、致密,经过3～6次水热沉积,电解质膜厚度为20～50mm,经电导率测试800℃时达0.078S/cm,与SSZ陶瓷体相比具有良好的电导活性。Preparation of anode supported Sc2O3 stabilized ZrO2 （SSZ） film for solid oxide fuel cell （SOFC） by hydrothermal method was investigated. The effect of anode, precursor, pH value, precipitation agent, hydrothermal time and temperature on the property of SSZ electrolyte film was studied. The optimum conditions of hydrothermal process were determined. The studies show ： SSZ film is fluorite cubic structure, homogenous, dense and integrate into a whole with the anode. The thickness of the film is about 20-40 μm after several times of hydrothermal coating. The conductivity of SSZ electrolyte film reaches 0.078 5 S/cm at 800 ℃, and shows good conduct activity in comparison to SSZ ceramic.

关 键 词：SSZ SOFC 电解质薄膜 阳极基底 电导率 

分 类 号：TM911.4[电气工程—电力电子与电力传动]