J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (12): 2368-2370.DOI: 10.1016/j.jmst.2018.06.012

• Orginal Article • Previous Articles     Next Articles

Electrical properties of La2Mo1.98Nb0.02O8.99 oxide ionic conductors prepared by tape casting

Xiao Liu*(), Xiaomin Xu, Huiling Du   

  1. College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China
  • Received:2017-07-30 Revised:2018-01-05 Accepted:2018-02-20 Online:2018-12-20 Published:2018-11-15
  • Contact: Liu Xiao

Abstract:

La2Mo2-xNbxO9-δ thick films have been successfully prepared by using a tape casting technique. Partial stabilization of the high temperature cubic phase is revealed in Nb doped La2Mo2O9 (LMO) films. The sintering temperature is decreased to 925?°C as compared with that of 1150?°C in bulk ceramics. The grain exhibits an oxide ionic conductivity of 0.014?S?cm-1 at 603?°C for La2Mo1.98Nb0.02O8.99, which is 39% higher than pure LMO. Additionally, the Nb doped LMO films present low grain boundary resistance showing the potential application as solid electrolytes.

Key words: Oxide ion conductor, Lanthanum molybdate, Tape casting