Download fulltext HTML
Partin, G. S., Kochetova, N. A., & Animitsa, I. E. (2018). Electrical Properties of (1–x)La2Mo2O9-xLa2Mo3O12 (x = 0.15) Composite System. KnE Materials Science, 4(2), 8–13. https://doi.org/10.18502/kms.v4i2.3031

https://doi.org/10.18502/kms.v4i2.3031

statistics

  • 403 Abstract Views
  • 242 PDF Views
  • 0 HTML Views

authors

  • G S Partin
    No author data available.
  • N A Kochetova
    No author data available.
  • I E Animitsa
    No author data available.

Published Date

  • Oct 14, 2018

Electrical Properties of (1–x)La2Mo2O9-xLa2Mo3O12 (x = 0.15) Composite System

KnE Materials Science / Sino-Russian ASRTU Conference Alternative Energy: Materials, Technologies, and Devices / Pages 8–13

Abstract

Electrical properties of (1–x)La2Mo2O9 –xLa2Mo3O12 (x = 0.15) composite system are
investigated. Introduction of an inert additional phase La2Mo3O12 (adjacent phase to La2Mo2O9 in the phase diagram) results in an increase in conductivity of composite by approximately one order of magnitude. This increase is associated with the appearance of a composite effect. The dominant ionic conductivity is maintained in the wide range of oxygen partial pressures. The calculated ion transport numbers are close to 1.


Keywords: lanthanum molybdate, LAMOX, heterogeneous doping, composites, oxide–ion conductivity

References
[1] Tarancon, A. (2009). Strategies for lowering solid oxide fuel cells operating temperature. Energies, vol. 2, no. 4, pp. 1130–1150.


[2] Goutenoire, F., Isnard, O., Retoux, R., et al. (2000). Crystal structure of La2Mo2O9, a new fast oxide-ion conductor. Chemistry of Materials, vol. 12, pp. 2575–2580.


[3] Malavasi, L., Kim, H. J., Billinge, S. J. L., et al. (2007). Nature of the monoclinic to cubic phase transition in the fast oxygen ion conductor La2Mo2O9 (LAMOX). Journal of the American Chemical Society, vol. 129, pp. 6903–6907.


[4] Goutenoire, F., Isnard, O., Suard, E., et al. (2001). Structural and transport characteristics of the LAMOX family of fast oxide-ion conductors, based on lanthanum molybdenum oxide La2Mo2O9. Journal of Materials Chemistry, vol. 11, pp. 119–124.


[5] Liang, C. C. (1973). Conduction characteristics of the lithium iodide – aluminum oxide solid electrolytes. Journal of the Electrochemical Society, vol. 120, no. 10, pp. 1289– 1292.


[6] Udilov, A. E. and Vylkov, A. I. (2010). Sposob podderzhaniya zadannogo davleniya kisloroda. Pat. 2395832 Rus. Federation.


[7] Jeitschko, W. (1973). Crystal structure of La2(MoO4)3, a new ordered defect scheelite type. Acta Crystallographica, vol. B29, pp. 2074–2081.


[8] Marrero-Lopez, D., Canales-Vazquez, J., Ruiz-Morales, J. C., et al. (2005). Electrical conductivity and redox stability of La2Mo2−