Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (6): 1030.doi: 10.7503/cjcu20160143

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

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))

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

CLC Number: 

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