【摘要】 采用溶胶-凝胶法合成高纯(SiO2<50 mg/kg)Zr0.84Y0.16O1.92+x MoO3(0.00≤x≤0.07)固溶体,研究MoO3的掺杂量对Zr0.84Y0.16 O1.92体系结构和电性能的影响。通过X射线衍射(XRD)和场发射扫描电子显微镜(FE-SEM)对材料进行表征,交流阻抗谱(AC)测试材料的电性能。结果表明,掺入MoO3后,体系仍保持立方莹石型结构;MoO3掺杂于Zr0.84Y0.16O1.92固体电解质的最佳掺量为0.05%;MoO3具有降低体系烧结温度、促进晶粒生长和提高体系致密度的作用,掺入MoO3的Zr0.84Y0.16O1.92体系晶界电导率和总电导率提高。更多还原

【Abstract】 The high pure(SiO2<50 mg/kg) Zr0.84Y0.16O1.92 + xMoO3(0.00 ≤ x ≤ 0.07) solid solution was prepared by the sol-gel method,then the effects of MoO3-doping on the structures and conductivity of the system was discussed.The system was characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FE-SEM),and AC impedance spectroscopy analysis.The results showed that MoO3 did not change the cubic fluorite-type structure of systems,the optimal doping value of MoO3 was 0.05%;MoO3 doping in Zr0.84Y0.16O1.92 solid electrolyte can lower the sintering temperature,promote the grain growth,improve the densification of the system and increase the grain boundary conductivity and total ionic conductivity.更多还原