Abstract
The oxygen nonstoichiometry δ of lanthanum cobaltite doped with acceptor impurities (Sr and Ni), La1 − x SrxCo0.9Ni0.1O3 − δ (x = 0.1, 0.3), was studied by high-temperature thermogravimetry over the temperature and pressure ranges 723 K ≤ T ≤ 1373 K and 10−3 atm ≤ \(p_{O_2 } \) ≤ 1 atm. The partial replacement of cobalt with nickel and lanthanum with strontium increased the oxygen nonstoichiometry δ. The partial molar enthalpies \(\Delta \bar H^\circ _O \) and entropies \(\Delta \bar S^\circ _O \) of solution of oxygen in the solid phase were calculated. Models of point defect formation were suggested and analyzed. The equilibrium constants of formation and concentrations of predominant point defects, ionized oxygen vacancies V ..o , holes Me .Co (Co .Co and Ni .Co ), and electrons Me ′Co (Co ′Co and Ni ′Co ) localized on 3d transition metals, were determined by nonlinear regression from the experimental and theoretical logp \(p_{O_2 } \) −δ dependences.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. N. Zybin, N. I. Lipatov, P. P. Pashinin, et al., Pis’ma Zh. Tekh. Fiz. 12(10), 622–627 (1986).
N. Iehisa, K. Fukaya, K. Matsuo, et al., J. Appl. Phys. 59(2), 317–323 (1986).
M. Dokiya, Solid State Ionics 152–153, 383–392 (2002).
H. J. M. Bouwmeester, Catal. Today 82, 141–150 (2003).
A. Atkinson and T. Ramos, J. Power Sources 130, 129–135 (2004).
B. Raveau, in Mixed Ionic Electronic Conducting Perovskite for Advanced Energy Systems, Ed. by N. Orlovskaya and N. Browning (Kluwer, Boston, 2004), pp. 25–36.
H. M. Zhang, Y. Shimizu, Y. Teraoka, et al., J. Catal. 121, 432–440 (1990).
L. A. Isupova, V. A. Sadykov, V. P. Ivanov, et al., React. Kinet. Catal. 53(1), 223–229 (1994).
J. Mizusaki, Y. Mima, S. Yamamuchi, and K. Fueki, J. Solid State Chem. 80, 102 (1989).
A. N. Petrov, V. A. Cherepanov, O. F. Kononchuk, and L. Ya. Gavrilova, J. Solid State Chem. 87, 69–76 (1990).
M. H. R. Lankhorst, H. J. M. Bouwmeester, and H. Verweij, Solid State Ionics 96, 21–27 (1997).
L. Ya. Gavrilova and V. A. Cherepanov, in Solid Oxide Fuel Cells: Proceedings of the Sixth International Symposium, Ed. by S. C. Singhal and M. Dokiya (Electrochemical Society, Pennington, NJ, 1999), PV 99-17, pp. 404–414.
S. B. Patil, H. V. Keer, and D. K. Chakrabarty, Phys. Status Solidi A 52, 681–686 (1979).
A. N. Petrov, O. F. Kononchuk, A. V. Andreev, et al., Solid State Ionic 80, 189 (1995).
M. H. R. Lankhorst and J. E. Elshof, J. Solid State Chem. 130, 302–310 (1997).
V. L. Kozhevnikov, I. A. Leonidov, E. B. Mitberg, et al., J. Solid State Chem. 172, 296–304 (2003).
A. Yu. Zuev, A. N. Petrov, and D. V. Pankov, in Solid Oxide Fuel Cells: Proceedings of the Sixth International Symposium, Ed. by S. C. Singhal and M. Dokiya (Electrochemical Society, Pennington, NJ, 1999), vol. 99-19, pp. 424–431.
A. N. Petrov, A. Yu. Zuev, D. V. Pankov, and E. S. Buyanova, Zh. Fiz. Khim. 78(1), 36–38 (2004) [Russ. J. Phys. Chem. 78 (2), 158 (2004)].
L. Lisi, G. Bagnasco, P. Ciambelli, et al., J. Solid State Chem. 146, 176–183 (1999).
L. Ya. Gavrilova, N. V. Proskurnina, V. A. Cherepanov, and V. I. Voronin, in Solid Oxide Fuel Cells: Proceedings of the Seventh International Symposium, Ed. by H. Yokokawa and S. C. Singhal (Electrochemical Society, Pennington, NJ, 2001), PV 2001-16, pp. 458–465.
Author information
Authors and Affiliations
Additional information
Original Russian Text © T.V. Aksenova, A.N. Petrov, V.A. Cherepanov, L.Ya. Gavrilova, 2006, published in Zhurnal Fizicheskoi Khimii, 2006, Vol. 80, No. 8, pp. 1386–1391.
Rights and permissions
About this article
Cite this article
Aksenova, T.V., Petrov, A.N., Cherepanov, V.A. et al. The thermodynamic parameters of oxygen nonstoichiometry defects in lanthanum cobaltite doped with acceptor impurities (Sr and Ni). Russ. J. Phys. Chem. 80, 1215–1220 (2006). https://doi.org/10.1134/S0036024406080061
Received:
Issue Date:
DOI: https://doi.org/10.1134/S0036024406080061