高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (6): 1030.doi: 10.7503/cjcu20160143

• 研究论文: 无机化学 • 上一篇    下一篇

低温燃烧法制备掺杂NiO的Beta-Al2O3固体电解质

洪永飞, 朱承飞(), 黄攀, 吉光辉   

  1. 南京工业大学材料科学与工程学院, 南京 210009
  • 收稿日期:2016-03-11 出版日期:2016-06-10 发布日期:2016-05-26
  • 作者简介:联系人简介: 朱承飞, 男, 博士, 副教授, 主要从事钠硫电池与材料的腐蚀和防护研究. E-mail:zhucf@njtech.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21203095)、 中国博士后科学基金(批准号: 2012M511261)和江苏高校优势学科建设工程项目(批准号: 20141371)资助

Preparation of NiO Doped Beta-Al2O3 Solid Electrolyte via a Low Temperature Combustion Method

HONG Yongfei, ZHU Chengfei*(), HUANG Pan, JI Guanghui   

  1. College of Materials Science & Engineering, Nanjing Tech. University, Nanjing 210009, China
  • Received:2016-03-11 Online:2016-06-10 Published:2016-05-26
  • Contact: ZHU Chengfei E-mail:zhucf@njtech.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21203095), the China Postdoctoral Science Foundation(No.2012M511261) and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China(No.2014(37))

摘要:

以Li2O为稳定剂, 柠檬酸(CA)为络合剂, 采用溶胶-凝胶低温燃烧法制备掺杂NiO的Beta-Al2O3固体电解质. 通过X射线衍射(XRD)、 扫描电子显微镜(SEM)、 热重/差热(TG/DSC)分析及抗弯强度、 体积密度和交流阻抗测试研究了固体电解质的结构与性能. 结果表明, 当NiO的含量(质量分数)达到0.10%时, Beta-Al2O3固体电解质的形貌致密, β″相含量达到88.33%, 相对体积密度为99.75%, 抗弯强度为248 MPa, 350 ℃下的电导率为0.108 S/cm.

关键词: Beta-Al2O3固体电解质, 溶胶-凝胶低温燃烧法, NiO掺杂, 抗弯强度

Abstract:

NiO doped and Li2O stabilized Beta-Al2O3 solid electrolyte was synthesized via a citrate sol-gel low temperature combustion method. Effects of the NiO content on the mechanical and electrical performances were studied by means of thermogravimetry/differential scanning calorimetry(TG/DSC), X-ray diffraction(XRD) and scanning electron microscopy(SEM). Meanwhile, the relative density, the bending strength and the electrical properties of the prepared samples were also measured. When the content(mass fraction) of NiO in Beta-Al2O3 solid electrolyte is 0.10%, the content of β″-Al2O3 phase is 88.33%, the microstructure is uniform and compact, the relative density is 99.75%, the bending strength is up to 248 MPa and the ionic conductivity can reach 0.108 S/cm at 350 ℃.

Key words: Beta-Al2O3 solid electrolyte, Sol-gel low temperature combustion method, NiO doping, Bending strength

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