Stabilization of New Phases in Ion-Conducting Nanocomposites
Tóm tắt
Physical properies of ion-conducting nanocomposites are reviewed. Special attention is paid to the change of the bulk characteristics of ionic salts in the nanocomposites due to the formation of the interface phases. The main thermodynamic reason of the formation of the nanocomposite as well as the stabilization of the interface phases is the adhesion energy σa. At sufficiently high σa values, the ionic salt tends to spread along the oxide surface, which leads to the formation of the nanocomposite on sintering. The adhesion is the result of the interface interaction and incorporates the stage of the specific adsorption of the interface ions. It leads to the formation of the double layer formed by the point defects in the interface region of the ionic salt. In the case of the strong adhesion, the structural reconstruction or the formation of the metastable interface phase takes place. Analysis of the experimental data shows that interface phases exist in composites AgI–Al2O3, MeNO3–Al2O3 (Me = Li, Na, K, Rb, and Cs), CsHSO4–SiO2, RbNO3–SiO2 and CsCl–Al2O3. Their structure may be either epitaxial crystalline, or amorphous. The thickness of the interface phase as estimated on the basis of the brick-wall model is about 3–4 nm.
Tài liệu tham khảo
Z. Y. Zhao, C. Y. Wang, S. Y. Dai, and L. Q. Chen, Solid StateIonics 9/10, 1175 (1983).
P. Chowdhary, V. B. Tare, and J. B. Wagner, Jr., J. Electrochem. Soc. 132, 123 (1985).
L. Chen, in Composite Solid Electrolytes, Materials for Solid State Batteries, B. V. R. Chowdari and S. Radhakrishna, eds. (World Sci., Singapore, 1986), pp. 69–78.
A. C. Khandkar and J. B. Wagner, Jr., Solid State Ionics 18/19, 1100 (1986).
N. F. Uvarov, M. C. R. Shastry, and K. J. Rao, Rev. Solid State Sci. 4, 61 (1990).
N. F. Uvarov, E. F. Hairetdinov, and N. B. Bratel, Russ. J. Electrochem. 29, 1231 (1993).
N. F. Uvarov, E. F. Hairetdinov, and N. B. Bratel, Solid State Ionics 86–88, 573 (1996).
J. S. Lee and J. Maier, Proceedings of EUROSOLID 4—European Conference on Transformation Kinetics and Reactivity of Solids, St. Vincent, Italy, September 14–16, 1997, A. Negro and L. Montanaro, Eds. (Politecnico Torino, 1997), pp. 115–122.
A. A. Politov and N. F. Uvarov, Extended Abstracts, 12th International Conference on Solid State Ionics, Thessaloniki, Greece, June 6–12, 1999, S. Bebelis and C. G. Vayenas, Eds. (International Society for Solid State Ionics, Thessaloniki, 1999), M-07-P.
N. F. Uvarov, P. Vaněk, M. Savinov, V. Železný, J. StudniČka, and J. Petzelt, Solid State Ionics 127, 253 (2000).
J. S. Lee, S. Adams, and J. Maier, J. Electrochem. Soc. 147, 2407 (2000).
N. F. Uvarov, E. F. Hairetdinov, and I. V. Skobelev, Solid State Ionics 86–88, 577 (1996).
N. F. Uvarov, I. V. Sbobelev, B. B. Bokhonov, and E. F. Hairetdinov, J. Mater. Synthesis Process. 4, 391 (1996).
N. F. Uvarov, P. Vaněk, Yu. I. Yuzyuk, V. Železný, B. B. Bokhonov, V. E. Dulepov, and J. Petzelt, Solid State Ionics 90, 201 (1996).
V. G. Ponomareva, G. V. Lavrova, N. F. Uvarov, and E. F. Hairetdinov, Solid State Ionics 90, 161 (1996).
V. G. Ponomareva, G. V. Lavrova, and L. G. Simonova, Solid State Ionics 118, 317 (1999).
G. V. Lavrova, V. G. Ponomareva, and N. F. Uvarov, Extended Abstracts, 12th International Conference on Solid State Ionics, Thessaloniki, Greece, June 6–12, 1999, S. Bebelis and C. G. Vayenas, Eds. (International Society for Solid State Ionics, Thessaloniki, 1999), M-04-P.
N. F. Uvarov, L. I. Brezhneva, and E. F. Hairetdinov, Solid State Ionics, 136–137, 1273 (2000).
Yu. F. Komnik, Physics of Thin Films. Size and Structural Effects (Atomizdat, Moscow, 1979).
J. Maier, J. Phys. Chem. Solids 46, 309 (1985).
J. Maier, Progr. Solid. State Chem. 23, 171 (1995).
H. E. Roman, A. Bunde, and W. Dieterich, Phys. Rev. B34, 3439 (1986).
M. C. R. Shastry and K. J. Rao, Solid State Ionics 51, 311 (1992).
N. F. Uvarov, V. P. Isupov, B. B. Bokhonov, and E. F. Hairetdinov, Solid State Ionics 74, 15 (1994).
Yu. Ya. Gurevich and Yu. I. Kharkats, J. Phys. Chem. Solids 38, 751 (1978).
N. Hainovsky and J. Maier, Phys. Rev. B51, 15789 (1995).
J. Maier, Solid State Ionics 75, 138 (1995).
Yu. G. Sidorov and E. M. Trukhanov, Poverkhnost 6, 106 (1992).
N. F. Uvarov, V. P. Isupov, V. Sharma, and A. K. Shukla, Solid State Ionics 51, 41 (1992).
N. F. Uvarov, Dokl. Russ. Acad. Sci. 353, 213 (1997).
N. F. Uvarov, Solid State Ionics, 136–137, 1267 (2000).