钐、钆掺杂对氧化铈基电解质材料性能的影响研究进展
Research Progress on the Influence of Samarium and Gadolinium Doping on the Properties of Cerium Oxide Based Electrolyte Materials

掺杂的CeO₂基电解质是中低温固体氧化物燃料电池(SOFC)理想的电解质材料。目前对于CeO₂基电解质材料掺杂规律的研究还比较欠缺，因此分析CeO₂基电解质材料的掺杂规律及构效关系具有重要的意义。论文主要综述了钐、钆元素的单掺、双掺和多掺对CeO₂基电解质材料性能的影响，然后进一步地分析了钐、钆掺杂CeO₂基电解质材料的掺杂规律及构效关系。通过对大量文献数据的分析得到如下结论：钐、钆元素的单掺、双掺和多掺都能有效地提高氧化铈基电解质的离子电导率，多掺由于掺杂的平均离子半径更接近Ce⁴⁺，因此能够进一步提高其电导率；且在一定温度范围内，其电导率随掺杂离子浓度的增加呈先增后减的趋势。研究结果以期对实验上制备出性能更加优异的CeO₂基电解质起到一定的指导作用。
The doped CeO₂-based electrolyte is an ideal electrolyte material for SOFC. At present, the research on the doping rule of CeO₂-based electrolyte materials is still lacking, so it is of great significance to analyze the doping rule and structure-effect relations of CeO₂-based electrolyte materials. In this paper, we mainly reviewed the effects of the single, double and multiple doping of samarium and gadolinium on the properties of CeO₂-based electrolyte materials, and then further analyzed the doping rules and structure-effect relations of CeO₂-based electrolyte materials doped with samarium and gadolinium. Through the analysis of a large number of literature data, the following conclusions are drawn: The single, double and multiple doping of samarium and gadolinium can effectively improve the ionic conductivity of cerium oxide based electrolyte, while the multiple doping can further improve the conductivity due to the closer average ion radius of doping to Ce⁴⁺. In a certain temperature range, the conductivity increases first and then decreases with the increase of the doped ion concentration. The results are expected to play a guiding role in the preparation of CeO₂-based electrolyte with better performance.