Hostname: page-component-848d4c4894-89wxm Total loading time: 0 Render date: 2024-07-05T06:02:04.726Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation, Electrical Properties, and Water Adsorption Behavior of (1-x)Sb2O5·xM2O3·nH2O (M = Al, Bi, and Y; 0 ≤ x ≤ 1)

Published online by Cambridge University Press:  18 March 2011

Kiyoshi Ozawa ,
Yoshio Sakka  and
Muneyuki Amano
Kiyoshi Ozawa
Affiliation:
National Institute for Materials Science 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
Yoshio Sakka
Affiliation:
National Institute for Materials Science 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
Muneyuki Amano
Affiliation:
National Institute for Materials Science 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
Get access

Abstract

Bi, Y, and Al-doped antimonic acids with the empirical formula (1-x)Sb2O5·xM2O3·nH2O (M =Al, Bi and Y; 0 ≤ x ≤ 1) have been prepared by the direct reaction of an aqueous H2O2 solution with metal alkoxides. The electrical properties have been investigated by ac and dc conductivity measurements using a polycrystalline compactdisc as a sample, in connection with the water adsorption behavior. The (1-x)Sb2O5·xM2O3·nH2O (M = Bi and Y) materials exhibit a solid solution of cubic antimonic acid (Sb2O5·nH2O) with Bi2O3 and Y2O3 in the range of x = 0 – 0.1, and the ionic transference numbers of the materials are all over 0.98. The proton conductivity of (1-x)Sb2O5·xM2O3·nH2O (M = Bi and Y; x = 0.1) at room temperature increases to over 10-3 Scm-1 with an increase in the relative humidity. The conductivity is closely affected by the water adsorption behavior, which seems to be related to the introduction of oxygen vacancies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 658: Symposium GG – Solid-State Chemistry of Inorganic Materials III , 2000 , GG9.1
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. England, W. A. and Slade, R. C. T., Solid State Commun., 33, 997 (1980).Google Scholar
2. England, W. A., Cross, M. G., Hamnett, A., Wiseman, P. J., and Goodenough, J. B., Solid State Ionics, 1, 231 (1980).Google Scholar
3. Sakka, Y., Sodeyama, K., Uchikoshi, T., Ozawa, K., and Amano, M., J. Am. Ceram. Soc., 79, 1677 (1996).Google Scholar
4. Colomban, Ph., Doremieux-Mori, C., Piffard, Y., Limage, M. H., and Novak, A., J. Mol. Struc., 213, 83 (1989).Google Scholar
5.CRC Handbook of Chemistry and Physics, Ionic Radii in Crystals, ed. Lide, D. R. (CRC Press, 1999) pp. 12–14.Google Scholar
6. Ozawa, K., Sakka, Y., and Amano, M, in Solid-State Ionics V, ed. Nazri, G. A., Julien, C., and Rougier, A. (Mater. Res. Soc. Symp. Proc., 548, Warrendale, PA, 1999) pp. 599–604.Google Scholar
7. Courant, S., Piffard, Y., Barboux, P., and Livage, L., Solid State Ionics, 27, 189 (1988).Google Scholar
8. Ozawa, K., unpublished data.Google Scholar
9. Bae, S. Y., Miyayama, M., and Yanagida, H., J. Am. Ceram. Soc., 77, 891 (1994).Google Scholar