摘要
采用EDTA-柠檬酸联合络合法制备了（Ce0.8Y0.2-xNdxO1.9）0.99（ZnO）0.01（0≤x≤0.2）系列电解质试样.通过热重、X射线衍射、扫描电镜、热膨胀测试和交流阻抗谱等方法对试样进行分析,着重研究了Y/Nd掺杂配比对CeO2基电解质材料电性能的影响.结果表明：采用EDTA-柠檬酸联合络合法制备的试样均为单一的立方萤石型结构;添加1mol%的ZnO,在1350℃下能得到较为致密的（Ce0.8Y0.2-xNdxO1.9）0.99（ZnO）0.01系列电解质陶瓷片,其中（Ce0.8Y0.05Nd0.15O1.9）0.99（ZnO）0.01电解质试样表现出最高的离子电导率,其在750℃测试时的离子电导率为58.79 mS/cm;所有试样的热膨胀系数在（11.83~12.30）×10 6/K之间.
Samples of（Ce0.8Y0.2-xNdxO1.9）0.99（ZnO）0.01（0≤x≤0.2） were synthesized by EDTA-citrate complexing method.The samples were characterized by thermogravimetric,X-ray diffraction,thermal expansion measurement and AC impedance spectroscope,respectively.The effect of Y/Nd dopant ratio on the electrical properties of materials was studied particularly.The results show that all samples prepared by EDTA-citrate complexing method have single cubic fluorite structure.The relatively dense（Ce0.8Y0.2-xNdxO1.9）0.99（ZnO）0.01 series samples can be obtained after sintered at 1350℃ with 1mol% ZnO.Among all the samples,（Ce0.8Y0.05Nd0.15O1.9）0.99（ZnO）0.01 shows the highest ionic conductivity of 58.79 mS/cm measured at 750℃.The thermal expansion coefficients of all samples are in the range of（11.83 12.30）×10-6/K.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2012年第3期265-270,共6页
Journal of Inorganic Materials
基金
江苏高校优势学科建设工程资助项目(PAPD)
江苏省科技支撑计划(工业)项目(BE2009169)~~
