05 Ge掺杂Sm_(0.2)Ce_(0.8)O_(1.9)电解质材料制备与性能研究

邓苏亚;王玮;蔡长焜;刘媛媛;谢满意;薛柯;安胜利;

• 1:内蒙古科技大学材料与冶金学院(稀土学院)

• 2:内蒙古自治区先进陶瓷材料与器件重点实验室

• 3:包头轻工业职业技术学院

• 
  

摘要(Abstract)：

采用溶胶凝胶法合成了不同Ge含量的Ge_xSm_(0.2)Ce_(0.8-x)O_(1.9)(x=0～0.04,xGSDC）电解质粉体.XRD结果表明：Ge⁽⁴⁺⁾在xGSDC电解质中的固溶度低于4%;SEM和致密度结果分析表明1GSDC比SDC具有更高的致密度，Ge掺杂提高材料的烧结性能，1 450℃烧结的1GSDC的致密度为99.30%;1 450℃烧结的1GSDC在750℃下电导率为0.050 S·cm(4+)在xGSDC电解质中的固溶度低于4%;SEM和致密度结果分析表明1GSDC比SDC具有更高的致密度，Ge掺杂提高材料的烧结性能，1 450℃烧结的1GSDC的致密度为99.30%;1 450℃烧结的1GSDC在750℃下电导率为0.050 S·cm^(-1)，而SDC在750℃下的电导率为0.034 S·cm(-1)，而SDC在750℃下的电导率为0.034 S·cm^(-1),Ge的掺杂提高了1GSDC的晶界电导；以1GSDC为电解质的单电池在750℃的最大功率密度达到552 mW/cm(-1),Ge的掺杂提高了1GSDC的晶界电导；以1GSDC为电解质的单电池在750℃的最大功率密度达到552 mW/cm².

关键词(KeyWords)： 固体氧化物燃料电池;电解质;掺杂;锗

基金项目(Foundation): 国家自然科学基金资助项目（51974167）

作者(Authors): 邓苏亚;王玮;蔡长焜;刘媛媛;谢满意;薛柯;安胜利;

DOI: 10.16559/j.cnki.2095-2295.2022.02.005

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