Abstract
We have synthesized Li0.5 − y Na y La0.5□Nb2O6 defect perovskite solid solutions with 0 ≤ y ≤ 0.5. Their structure has been shown to undergo partial disordering with increasing sodium content. Lithium ion diffusion in the Li0.5 − y Na y La0.5□Nb2O6 system exhibits no percolation effects. The ionic conductivity as a function of sodium content has a maximum due to two competing factors: the increase in perovskite cell volume and the decrease in lithium ion concentration.
Similar content being viewed by others
References
Burmakin, E.I., Tverdye elektrolity s provodimost’yu po kationam shchelochnykh metallov (Alkali Metal Ion Conducting Solid Electrolytes), Moscow: Nauka, 1992, p. 263.
Belous, A.G., Butko, V.I., Novitskaya, G.N., et al., Electrical Conductivity of La2/3 − x M3x TiO3 Perovskites, Ukr. Fiz. Zh. (Russ. Ed.), 1986, vol. 31, no. 4, pp. 576–581.
Belous, A.G., Properties of Heterosubstituted Titanates with Perovskite Structure, 3rd Euro-Ceramics, 1993, vol. 2, pp. 341–346.
Inaguma, Y., Liquan, C., Itoh, M., et al., High Ionic Conductivity in Lithium Lanthanum Titanate, Solid State Commun., 1993, vol. 86, no. 10, pp. 689–695.
Ibarra, J., Varez, A., Leon, C., et al., Influence of Composition on the Structure and Conductivity of the Fast Ionic Conductors La2/3 − x Li3x TiO3 (0.03 ≤ x ≤ 0.167), Solid State Ionics, 2000, vol. 1, pp. 1–9.
Belous, A.G., Didukh, I.R., Novosadova, E.B., and Pashkova, E.V., Electrical Conductivity of (Pb1 − x La2/3 − x − y M3x )B2O6, Fiz. Tverd. Tela (Leningrad), 1986, vol. 28, no. 10, pp. 3232–3236.
Belous, A.G., Gavrilenko, O.N., Pashkova, E.V., and Mirnyi, V.N., Lithium Ion Conductivity and Crystal-Chemical Aspects of La2/3 − x Li3x □4/3 − 2x Nb2O6 Defect Perovskite Solid Solutions, Elektrokhimiya, 2002, vol. 38, no. 4, pp. 479–484.
Belous, A., Pashkova, E., Gavrilenko, O., et al., Solid Electrolytes Based on Lithium-Containing Lanthanum Metaniobates, J. Eur. Ceram. Soc., 2004, vol. 24, pp. 1301–1304.
Belous, A.G., Gavrilenko, O.N., Pashkova, E.V., et al., Effect of Synthesis Conditions on the Lithium Nonstoichiometry and Properties of La2/3 − x Li3x □4/3 − 2x M2O6 (M = Nb, Ta) Perovskite-like Solid Solutions, Neorg. Mater., 2004, vol. 40, no. 8, pp. 993–1000 [Inorg. Mater. (Engl. Transl.), vol. 40, no. 8, pp. 867–873].
Paris, M.A., Sanz, J., Leon, C., et al., Li Mobility in the Orthorhombic Li0.18La0.61TiO3 Perovskite Studied by NMR and Impedance Spectroscopies, Chem. Mater., 2000, vol. 12, pp. 1694–1701.
Maier, J., Nano-Sized Mixed Conductors (Aspects of Nano-Ionics. Part III), Solid State Ionics, 2002, vol. 148, pp. 367–374.
West, A.R., Solid State Chemistry and Its Applications, Chichester: Wiley, 1985. Translated under the title Khimiya tverdogo tela, Moscow: Mir, 1988, pp. 440–441.
Itoh, M., Inaguma, Y., Jung, W., et al., High Lithium Ion Conductivity in the Perovskite-Type Compounds Ln1/2Li1/2TiO3 (Ln = La, Pr, Nd, Sm), Solis State Ionics, 1995, vols. 70–71, pp. 203–207.
Thangadura, V.I., Shukla, A.K., and Gopalakrishnn, J., LiSr1.650.35B1.3 B′1.7 O9(B = Ti, Zr; B’ = Nb, Ta): New Lithium Ion Conductors Based on the Perovskite Structure, Chem. Mater., 1999, vol. 11, pp. 835–839.
Watanabe, H. and Kuwano, J., Formation of Perovskite Solid Solutions and Lithium-Ion Conductivity in the Compositions Li2x Sr1 − 2x M III0.5−x Ta0.5 + x O3 (M = Cr, Fe, Co, Al, Ga, In, Y), J. Power Sources, 1997, vol. 68, pp. 421–426.
Gavrilenko, O.N., Belous, A.G., Kovalenko, L.L., and Pashkova, Ye.V., Effect of the A-Site Substitution on the Structure Peculiarities and Ionic Conductivity of Solid Electrolytes La2/3 − x − y Li3x − y Sr2y □4/3 − 2x Nb2O6, Mater. Manuf. Processes, 2008, vol. 23, pp. 607–610.
Rivera, A., León C., Santamaria, J., et al., Percolation-Limited Ionic Diffusion in Li0.5 − x NaxLa0.5TiO3 Perovskites (0 < x < 0.5), Chem. Mater., 2002, vol. 14, no. 12, pp. 5148–5152.
Sanz, J., Alonso, J., Várez, A., et al., Structural Analysis of Li-Ion Conducting Perovskites Li0.5 − x NaxLa0.5TiO3, The Institute Laue-Langevin Annual Report, 2002, pp. 34–35.
Sanz, J., Rivera, A., León, C., et al., Li Mobility in (Li, Na)yLa0.66 − y/3TiO3 Perovskites (0.09 < y < 0.5). A Model System for the Percolation Theory, Mater. Res. Soc. Proc., 2003, vol. 756, pp. EE2.31–EE2.36.
Herrero, C., Várez, A., Rivera, A., et al., Influence of Vacancy Ordering on the Percolative Behavior of (Li1 − x Nax)3y La2/3y TiO3 Perovskites, J. Phys. Chem. B, 2005, vol. 109, no. 8, pp. 3262–3268.
Sanjuan, M., Laguna, M., Belous, A., and V’yunov, O., On the Local Structure and Lithium Dynamics of La0.5(Li, Na)0.5TiO3 Ionic Conductors. A Raman Study, Chem. Mater., 2005, vol. 17, no. 23, pp. 5862–5866.
Jimene, R., Rivera, A., Várez, A., and Sanz, J., Li Mobility in Li0.5 − x NaxLa0.5TiO3 Perovskites (0 × 0.5), Solid State Ionics, 2009, vol. 180, no. 26, pp. 1362–1371.
Stauffer, D. and Aharony, A., Introduction to Percolation Theory, London: Taylor and Francis, 1992.
Katsumata, T., Inaguma, Y., and Itoh, M., New Perovskite-Type Lithium Ion Conductors, LaxMyLi1 − 3x − y NbO3 (M = Ag and Na), Solid State Ionics, 1998, vols. 113–115, pp. 465–469.
Jin Shan, Y., Sinozaki, N., and Nakamura, T., Preparation and Characterizations of New Perovskite Oxides LaxNa1 − 3x − y Liy□2x NbO3 (0 ≤ x and y ≤ 0.2), Solid State Ionics, 1998, vol. 108, pp. 403–406.
Nalbandyan, V.B. and Shukaev, I.A., Novel Tantalates and Niobates, Zh. Neorg. Khim, 1989, vol. 34, pp. 793–795.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.G. Belous, O.N. Gavrilenko, O.I. V’yunov, S.D. Kobilyanskaya, V.V. Trachevskii, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 3, pp. 359–363.
Rights and permissions
About this article
Cite this article
Belous, A.G., Gavrilenko, O.N., V’yunov, O.I. et al. Effect of isovalent substitution on the structure and ionic conductivity of Li0.5 − y Na y La0.5□Nb2O6 . Inorg Mater 47, 308–312 (2011). https://doi.org/10.1134/S002016851103006X
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S002016851103006X