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分别通过室温老化和高温沉降热处理成功的合成了大量均匀的Y-掺杂铈纳米颗粒和纳米棒,并对Y-掺杂铈粉末中Y的含量和形态对于固体溶液性质的影响进行了研究。结果表明,Y的掺杂大大提高了铈纳米颗粒和纳米棒的比表面积,其中30%的Y-掺杂纳米颗粒的比表面积最大,可达197 m2.g-1。此外,所制备的粉末可以很容易被烧结和硬化,而相应的电解质具有良好的电学性质,其中Y0.3Ce0.7O1.85纳米颗粒电解质在850℃时具有最大电导率(4.32 S.m-1)和最小表观活化能(0.81 eV)。
A large amount of uniform Y-doped cerium nanoparticles and nanorods were successfully synthesized by room-temperature aging and high-temperature sedimentation heat treatment respectively. The influence of Y content and morphology on the properties of solid solution in Y-doped cerium powder was also studied. The results showed that the doping of Y greatly increased the specific surface area of cerium nanoparticles and nanorods, of which 30% Y-doped nanoparticles had the largest specific surface area of 197 m2.g-1. In addition, the prepared powders can be easily sintered and hardened while the corresponding electrolytes have good electrical properties, wherein the Y0.3Ce0.7O1.85 nanoparticle electrolyte has the maximum conductivity (4.32 Sm-1) at 850 ° C and The minimum apparent activation energy (0.81 eV).