EDTA-柠檬酸络合法制备(Ce0.8Y0.2-xNdxO1.9)0.99(ZnO)0.01电解质材料及其性能研究

doi:10.3724/SP.J.1077.2012.00265

无机材料学报 ›› 2012, Vol. 27 ›› Issue (3): 265-270.DOI: 10.3724/SP.J.1077.2012.00265 CSTR: 32189.14.SP.J.1077.2012.00265

EDTA-柠檬酸络合法制备(Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01电解质材料及其性能研究

李淑君, 葛林, 郑益锋, 周明, 陈涵, 郭露村

(南京工业大学材料学院, 南京 210009)

收稿日期:2011-04-01 修回日期:2011-05-20 出版日期:2012-03-20 网络出版日期:2012-02-16
作者简介:李淑君(1985-), 女, 硕士研究生. E-mail: shujunli2008@163.com
基金资助:
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)

Properties of (Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01 Electrolyte Prepared by EDTA-citrate Complexing Method

LI Shu-Jun, GE Lin, ZHENG Yi-Feng, ZHOU Ming, CHEN Han, GUO Lu-Cun

(College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009, China)

Received:2011-04-01 Revised:2011-05-20 Published:2012-03-20 Online:2012-02-16
About author:LI Shu-Jun. E-mail: shujunli2008@163.com
Supported by:
Priority Academic Program Development of Jiangsu Higher Education Institutions; Commercialization of Scientific and Technological Achievements Program of Jiangsu Province

摘要/Abstract

摘要： 采用EDTA-柠檬酸联合络合法制备了(Ce_0.8Y_0.2-xNd_xO_1.9)_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(Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01系列电解质陶瓷片, 其中 (Ce_0.8Y_0.05Nd_0.15O_1.9)_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.

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

Abstract: Samples of (Ce_0.8Y_0.2-xNd_xO_1.9)_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 (Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01 series samples can be obtained after sintered at 1350℃ with 1mol% ZnO. Among all the samples, (Ce_0.8Y_0.05Nd_0.15O_1.9)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.

Key words: solid oxide fuel cell, electrolyte, EDTA-citrate complexing method, co-doped ceria, ionic conductivity

中图分类号:

TM911

李淑君, 葛林, 郑益锋, 周明, 陈涵, 郭露村. EDTA-柠檬酸络合法制备(Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01电解质材料及其性能研究[J]. 无机材料学报, 2012, 27(3): 265-270.

LI Shu-Jun, GE Lin, ZHENG Yi-Feng, ZHOU Ming, CHEN Han, GUO Lu-Cun. Properties of (Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01 Electrolyte Prepared by EDTA-citrate Complexing Method[J]. Journal of Inorganic Materials, 2012, 27(3): 265-270.

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EDTA-柠檬酸络合法制备(Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01电解质材料及其性能研究

Properties of (Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01 Electrolyte Prepared by EDTA-citrate Complexing Method

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EDTA-柠檬酸络合法制备(Ce0.8Y0.2-xNdxO1.9)0.99(ZnO)0.01电解质材料及其性能研究

Properties of (Ce0.8Y0.2-xNdxO1.9)0.99(ZnO)0.01 Electrolyte Prepared by EDTA-citrate Complexing Method

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EDTA-柠檬酸络合法制备(Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01电解质材料及其性能研究

Properties of (Ce_0.8Y_0.2-xNd_xO_1.9)_0.99(ZnO)_0.01 Electrolyte Prepared by EDTA-citrate Complexing Method