研究了异价离子的取代，得到多系列新型稀土复合氧化物Ce6-xRExMoO15-y（RE=Sm、Gd、Ho、Dy、Y、Er等）。研究了不同稀土离子的取代对结构及导电性能的影响；研究了CeO2和CeMoO15不同基体固体电解质及其掺杂体系结构与电性能的关系；.将过渡金属氧化物MoO3作为烧结促进剂加入CeO2基电解质材料，探讨了MoO3作为烧结助剂的机制，确定了MoO3在(CeO2:Nd) NDC和(CeO2:Gd)GDC体系中的最佳用量及其对材料结构与电性能的影响，MoO3是CeO2基电解质的理想烧结助剂；.对于陶瓷材料中普遍存在的基本杂质SiO2，烧结时通常偏聚到晶界处，阻塞晶界的移动或扩散，增大晶界电阻，降低多晶电解质材料的电导率。.将MgO 加入到SiO2含量为500ppm的SDC体系，ZnO加入到SiO2含量为500ppm的GDC体系。研究表明，MgO和ZnO既可作为CeO2基电解质的烧结助剂，又可作为晶界杂质改善剂。当Pr6O11 掺杂于Ce0.87Sm0.13O2-δ体系后可减少其晶粒表面和晶界处的坑痕或孔隙，增加材料的致密性、降低材料的晶界电阻和电极界面电阻。

A series of oxide ionic type rare-earth composite Ce6-xRExMoO15-y (RE = Sm, Gd, Ho, Dy, Y, Er, etc.) have been synthesized by the substitution of different valence ions in the crystal structure. The replace influence of different rare earth ions on crystal structure and conductive performance was investigated. The relationship between CeO2, CeMoO15 base solid electrolyte and the crystal structure and transport performance was discussed in these doping systems..The transition metal oxides MoO3 was added into CeO2 as sintering accelerator-based electrolyte materials. Study the mechanism of MoO3 as sintering aids. We find the best dosage of MoO3 identified in the NDC (CeO2: Nd) and GDC (CeO2: Gd) system and the influence of optimized MoO3 content to structure and electrical properties. We confirm the MoO3 is the ideal of sintering aids for the CeO2-based electrolyte..For the ceramic materials are prevalent in the SiO2 impurity, it usually segregated to the grain boundaries, blocking the movement of grain boundaries or spread, increasing the grain boundary resistance and lower electrical conductivity of polycrystalline electrolyte materials. The MgO and ZnO were added into the CeO2 based electrolyte materials as sintering aids. The optimized MgO content is about 500ppm in SDC system and the optimized ZnO content is about 500ppm in GDC system. It is shown that MgO and ZnO can be used as sintering additives but also as an agent to improve the grain boundary impurities in the CeO2-based electrolytes materials..Our investigation shows that when the Pr6O11 was doped into Ce0.87Sm0.13O2-δ system it can reduce the grain surface and grain boundary of the pit marks or pores and increase the density of materials, reduced material grain boundary resistance and electrode interface resistance.

研究了异价离子的取代，得到多系列新型稀土复合氧化物Ce6-xRExMoO15-y（RE=Sm、Gd、Ho、Dy、Y、Er等）。研究了不同稀土离子的取代对结构及导电性能的影响；研究了CeO2和CeMoO15不同基体固体电解质及其掺杂体系结构与电性能的关系；将过渡金属氧化物MoO3作为烧结促进剂加入CeO2基电解质材料，探讨了MoO3作为烧结助剂的机制，确定了MoO3在(CeO2:Nd) NDC和(CeO2:Gd)GDC体系中的最佳用量及其对材料结构与电性能的影响，MoO3是CeO2基电解质的理想烧结助剂；对于陶瓷材料中普遍存在的基本杂质SiO2，烧结时通常偏聚到晶界处，阻塞晶界的移动或扩散，增大晶界电阻，降低多晶电解质材料的电导率。将MgO 加入到SiO2含量为500ppm的SDC体系，ZnO加入到SiO2含量为500ppm的GDC体系。研究表明，MgO和ZnO既可作为CeO2基电解质的烧结助剂，又可作为晶界杂质改善剂。当Pr6O11 掺杂于Ce0.87Sm0.13O2-δ体系后可减少其晶粒表面和晶界处的坑痕或孔隙，增加材料的致密性、降低材料的晶界电阻和电极界面电阻。