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Mo掺杂对高纯Ce1-xNdxO2-x/2（x=0.10,0.15）体系烧结温度及晶界电性能的影响
  • ISSN号：0251-0790
  • 期刊名称：《高等学校化学学报》
  • 时间：0
  • 分类：O641[理学—物理化学;理学—化学] O614.33[理学—无机化学;理学—化学]
  • 作者机构：[1]长春工业大学生物工程学院,长春130012, [2]中国科学院长春应用化学研究所稀土化学与物理重点实验室,长春130022
  • 相关基金：国家自然科学基金（批准号：20331030,20671088）和吉林省科技发展计划（批准号：20070510）资助,
作者： 周德凤[1], 朱建新[1], 夏燕杰[1], 于丹[1], 孟健[2]
关键词： 固体电解质, 电导率, 晶界, 掺杂, Solid state electrolyte , Conductivity , Grain boundary , Doping
中文摘要：

用柠檬酸硝酸盐法制备高纯Ce1-xNdxO2-x/2（x=0.10,0.15）固溶体,加入摩尔分数为5%的Mo,研究了Mo掺杂对烧结温度、结构及电性能的影响.通过X射线衍射、电感偶合等离子体和场发射扫描电镜等手段对氧化物进行了结构表征,采用交流阻抗谱测试其电性能.柠檬酸硝酸盐法制备的前驱体经1450℃烧结24 h得到致密度大于96%的陶瓷材料;加入5%Mo,在1250℃下烧结8 h即可达到理想的致密度（〉95%）.加入Mo在烧结过程中可加快晶界迁移,促进晶粒生长,显著提高了晶界电导率.在600℃时Ce0.85Nd0.15O1.925的晶界电导率为2.56 S/m,加入Mo后材料的电导率增加到5.62 S/m.

英文摘要：

The pure Ce1-xNdxO2-x/2（x =0. 10, 0. 15） solid solutions were synthesized via citric-nitrate method and the effects of 5% （molar fraction） Mo-dopant on the sintering temperature and grain boundary conductivities of theCe1-xNdxO2-x/2（x =0. 10, 0. 15） were discussed. Their structures and ionic conductivities were characterized via X-ray Diffraction （XRD）, Inductively Coupled Plasma （ICP）, field-emission scanning electron microscopy（FE-SEM） and electrochemical impedance spectroscopy（EIS）. The results show that the precurors synthesized via citric-nitrate method have a good sinterability with relative density of 〉 96% after being sintered at 1450℃ for 24 h. With Mo-dopant, the relative density of 〉95% was reached after being sintered at 1250℃ for 8 h and the grain boundary conductivity increased greatly because of the increase of grain size. The grain boundary conductivty at 600℃ for Ceo.ssNdo. 15Oi.925 increased from 2.56 S/m to 5.62 S/m with Mo-dopant.

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期刊信息
  • 《高等学校化学学报》
  • 北大核心期刊（2011版）
  • 主管单位:中华人民共和国教育部
  • 主办单位:吉林大学 南开大学
  • 主编：周其凤
  • 地址：吉林大学南胡校区
  • 邮编：130012
  • 邮箱：cjcu@jlu.edu.cn
  • 电话：0431-88499216
  • 国际标准刊号：ISSN：0251-0790
  • 国内统一刊号：ISSN：22-1131/O6
  • 邮发代号:12-40
  • 获奖情况:
  • 首届及第二届国家期刊奖,连续两届“百种中国杰出学术期刊”,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国科学引文索引（扩展库）,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:50676