EDTA-柠檬酸络合法制备(Ce_(0.8)Y_(0.2-x)Nd_xO_(1.9))_(0.99)(ZnO)_(0.01)电解质材料及其性能研究  

Properties of (Ce_(0.8)Y_(0.2-x)Nd_xO_(1.9))_(0.99)(ZnO)_(0.01) Electrolyte Prepared by EDTA-citrate Complexing Method

作　　者：李淑君[1] 葛林[1] 郑益锋[1] 周明[1] 陈涵[1] 郭露村[1] 

机构地区：[1]南京工业大学材料学院,南京210009

出　　处：《无机材料学报》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)~~

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.

关 键 词：固体氧化物燃料电池 电解质 EDTA-柠檬酸联合络合法 共掺杂氧化铈 离子电导率 

分 类 号：TM911[电气工程—电力电子与电力传动]