摘要
主要针对掺杂Zr4+的CeO2基电解质材料进行研究,并引入了第二种掺杂离子Sc3+,以期望能进一步改善其电性能。分析了该两种元素不同掺杂比例对电解质的电导率、微观性质及热过程的影响,并对产生这些差异的原因进行了初步探讨。采用固相法制取双掺杂的CeO2基电解质粉体,并对其最佳条件做了详细的分析。实验结果表明:在微观性质方面,经XRD分析可知,Sc3+改善了ZrO2在CeO2的固溶情况;在电性能方面,应用交流阻抗谱法分析了双掺杂的CeO2基电解质,可知其电导率有一定程度的提高,并得出Sc3+∶Zr4+∶Ce4+在摩尔比为5∶25∶7时活化能最小,电导率最佳。
The research was mainly about CeO2-based electrolyte doped by Zr4＋,and we tried to dope a second ion Sc3＋,hoping to improve the conductivity more.We analysed the influence on conductivity,microscopic natures and thermal process of the materials with different proportions of the two ions,and tried to explain the reason caused these differences.The experiments indicated that： First,the XRD analysis told that Sc3＋ improved solid solution when ZrO2 doping into CeO2.Second,analysis by AC impedance apectroscopy showed that the didoped CeO2-based electrolyte had a larger conductivity,and it also told that when the molar proportion of Sc3＋∶Zr4＋∶Ce4＋ = 5∶25∶7,the electrolyte got the highest conductivity.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第10期85-87,共3页
New Chemical Materials
基金
贵州省科技厅基金项目资助
