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Статья
2017

Proton conductivity and spectral data of Cs2HPO4 · 2H2O


V. G. PonomarevaV. G. Ponomareva, I. N. BagryantsevaI. N. Bagryantseva, G. V. LavrovaG. V. Lavrova
Российский электрохимический журнал
https://doi.org/10.1134/S1023193517060155
Abstract / Full Text

The Cs2HPO4 · 2H2O single crystals synthesized from an aqueous solution containing equimolar amounts of H3PO4 and Cs2CO3 were studied by impedance and IR spectroscopy, X-ray diffraction analysis, and differential scanning calorimetry (DSC). The IR spectra were analyzed in accordance with the structural data, and the absorption bands were assigned. The proton conductivity was studied at temperatures in the range 20–250°C. The conductivity of dehydrated Cs2HPO4 was low, ~10–5–10–9 S cm–1 at 90–250°C with an activation energy of conductivity E a = 1.1 eV at 130–250°C. The processes determining the character of the temperature dependence of conductivity were consistent with the DSC and thermogravimetry data. According to these data, dehydration of the crystalline hydrate Cs2HPO4 · 2H2O starts at 60°C and occurs in three stages, forming Cs2HPO4 · 1.5H2O below 100°C; anhydrous Cs2HPO4 at t > 160°C, which is stable up to 300°C; and Cs4P2O7 above 330°C.

Author information
  • Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630128, RussiaV. G. Ponomareva, I. N. Bagryantseva & G. V. Lavrova
  • Novosibirsk State University, Novosibirsk, 630090, RussiaV. G. Ponomareva & I. N. Bagryantseva
References
  1. Busch, G. and Scherrer, P., Naturwissenshaften, 1935, vol. 23, p. 737.
  2. Frazer, B.C. and Pepinsky, R., Acta Crystallogr., 1953, vol. 6, p. 273.
  3. Reese, W. and May, L.F., Phys. Rev., 1967, vol. 162, p. 510.
  4. Busch, G., Ferroelectrics, 1987, vol. 71, p. 17.
  5. Baranov, A.I., Shuvalov, L.A., and Shchagina, N.M., Pis’ma Zh. Eksp. Teor. Fiz., 1982, vol. 36, p. 381.
  6. Plakida, N.M., Phys. Status Solidi B, 1986, vol. 135, p. 133.
  7. Uesu, Y. and Kobayashi, J., Phys. Status Solidi A, 1976, vol. 34, p. 475.
  8. Matsunaga, H. and Itoh, K., J. Phys. Soc. Jpn., 1980, vol. 486, p. 2011.
  9. Baranov, A.I., Khiznichenko, V.P., Sandler, V.A., and Shuvalov, L.A., Ferroelectrics, 1988, vol. 81, p. 1147.
  10. Preisinger, A., Mereiter, K., and Bronowska, W., Mater. Sci. Forum, 1994, vol. 166, p. 511.
  11. Boysen, D.A., Uda, T., Chisholm, C.R.I., and Haile, S.M., Science, 2004, vol. 303, p. 68.
  12. Uda, T. and Haile, S.M., Electrochem. Solid-State Lett., 2005, vol. 8, p. A245.
  13. Chisholm, C.R.I., Boysen, D.A., Papandrew, A.B., Zecevic, S., Cha, S.Y., Sasaki, K.A., Varga, A., Giapis, K.P., and Haile, S.M., Electrochem. Soc. Interface, 2009, vol. 18, p. 53.
  14. Papandrew, A.B., Chisholm, C.R.I., Elgammal, R.A., Ozer, M.M., and Zecevic, S.K., Chem. Mater., 2011, vol. 23, p. 1659.
  15. Nirsha, B., Gudinitsa, E.N., Efremov, V.A., and Fakeev, A.A., Russ. J. Inorg. Chem., 1983, vol. 28, p. 475.
  16. Baur, W.H. and Khan, A.A., Acta Crystallogr., 1970, vol. B26, p. 1584.
  17. Catti, M., Ferraris, G., and Franchini-Angela, M., Acta Crystallogr., 1977, vol. B33, p. 3449.
  18. Ferraris, G., Jones, D.W., and Yerkess, J., Acta Crystallogr., 1971, vol. B27, p. 354.
  19. Baran, J., Lis, T., and Ratajczak, H., J. Mol. Struct., 1989, vol. 195, p. 159.
  20. Sheludyakova, L.A., Afanasieva, V.A., Podberezskaya, N.V., and Mironov, Yu.I., Russ. J. Struct. Chem., 1999, vol. 40, p. 869.
  21. Stoger, B., Weil, M., and Zobetz, E., Z. Kristallogr., 2012, vol. 227, p. 859.
  22. Stöger, B. and Weil, M., Acta Crystallogr., Sect. C: Struct. Chem., 2014, vol. 70, p. 7.
  23. Lavrova, G.V., Bulina, N.V., Min’kov, V.S., and Matvienko, A.A., Russ. J. Inorg. Chem., 2016, vol. 61, p. 284.
  24. Lavrova, G.V., Ponomareva, V.G., and Martsinkevich, V.V., Abstracts of Papers, 16 Int. Conf. “Solid State Protonic Conductors” (SSPC16), Grenoble, France, 2012, p. 123.
  25. Ponomareva, V.G. and Lavrova, G.V., Abstracts of Papers, II Vseros. konf. “Goryachie tochki khimii tverdogo tela: mekhanizmy tverdofaznykh reaktsii” (II Russian Conf. “Hot Issues in Solid State Chemistry: Mechanisms of Solid-Phase Reactions”), Novosibirsk, 2015, p. 83.