Advertisement

Interfacial reaction between YSZ electrolyte and La0.7Sr0.3VO3 perovskite anode for application

  • Chi-Yang Liu
  • Shu-Yi Tsai
  • Chung-Ta Ni
  • Kuan-Zong Fung
Research

Abstract

The synthesis and performance of La0.7Sr0.3VO3/YSZ composites are investigated as alternative anodes for the direct utilization of methane (i.e., biogas) in solid oxide fuel cells. In this study, the structural stability between Sr-doped lanthanum vanadate and yttria-stabilized zirconia was investigated by using the powder mixture annealed at various periods of time and temperatures. The chemical reaction between these two materials in the temperature ranging from 1100 to 1400 °C was examined by X-ray diffraction (XRD) and electron probe microanalysis (EPMA) analyses. According to the examination of La0.7Sr0.3VO3/YSZ powder mixture after heat treatment at 1100–1400 °C, no second phase was detected when the La0.7Sr0.3VO3/YSZ powder mixture was heated at 1100 °C. The reaction products of perovskite SrZrO3 were formed when the specimens were heated treatment at over 1200 °C. Owing to the further diffusion of Sr cations from La0.7Sr0.3VO3 toward the reaction layer/YSZ interface via the reaction layer, the reaction layer was extended into the YSZ. The interfacial reaction behavior between electrode and electrolyte pellets of the reaction couple was examined by EPMA. No reaction products were observed as La0.7Sr0.3VO3/YSZ composite co-fired at 1100 °C. The reaction products of perovskite SrZrO3 were formed when the specimens were heat treated at over 1200 °C. The bonding energy between La-O (188 kcal/mol) is stronger than Sr-O (83.6 kcal/mol). Thus, Sr ions tend to migrate and react with YSZ much faster than La ions. Furthermore, when the Sr concentration increases to 70%, excess of SrZrO3 formation leads to the phase decomposition of perovskite La0.3Sr0.7VO3.

Keywords

Anode Diffusion couple Composite anode La0.7Sr0.3VO3/YSZ Solid oxide fuel cell (SOFC) 

Notes

Funding information

The authors acknowledge the financial support provided by the Ministry of Science and Technology Taiwan under grant MOST-105-2923-E-006-004-MY3. This work was also financially supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.

References

  1. 1.
    Setoguchi, T., Sawano, M., Eguchi, K., Arai, H.: Application of the stabilized zirconia thin film prepared by spray pyrolysis method to SOFC. Solid State Ionics. 40–41, 502–505 (1990)CrossRefGoogle Scholar
  2. 2.
    Charpentier, P., Fragnaud, P., Schleich, D.M., Gehain, E.: Preparation of thin film SOFCs working at reduced temperature. Solid State Ionics. 135, 373–380 (2000)CrossRefGoogle Scholar
  3. 3.
    Fukui, T., Ohara, S., Murata, K., Yoshida, H., Miura, K., Inagaki, T.: Performance of intermediate temperature solid oxide fuel cells with La(Sr)Ga(Mg)O3 electrolyte film. J Power Sources. 106, 142–145 (2002)CrossRefGoogle Scholar
  4. 4.
    Bringley, J.F., Scott, B.A., Placa, S.J., MnGuire, T.R., Mehran, F., McElfresh, M.W., Cox, D.E.: Structure and properties of the LaCuO3-δ perovskites. Phys Rev B. 47(15), 269–275 (1993)Google Scholar
  5. 5.
    Petrov, A.N., Kononchuk, O.F., Andreev, A.V., Cherepanov, V.A., Kofstad, P.: Crystal structure, electrical and magnetic properties of La1 − xSrxCoO3 − y. Solid State Ionics. 80, 189–199 (1995)CrossRefGoogle Scholar
  6. 6.
    Karppinen, M., Yamauchi, H., Suematsu, H., Fukunaga, O.: Synthesis of various LaCuO3−y phases by a high-pressure technique and subsequent post-annealing treatments. Physica C. 264, 268–274 (1996)CrossRefGoogle Scholar
  7. 7.
    Dougier, P., Casalot, A.: Sur Quelques Nouvelles Series de Composes Oxygenes du Vanadium et des Lanthanides de Structure Perovskite. J Solid State Chem. 2, 396–403 (1970)CrossRefGoogle Scholar
  8. 8.
    Dougier, P., Fan, J.C.C., Goodenough, J.B.: Etude des proprietes magnetiques, electriques et optiques des phases de structure perovskite SrVO2.90 et SrVO3. J Solid State Chem. 14, 247–259 (1975)CrossRefGoogle Scholar
  9. 9.
    Mahajan, A.V., Johnston, D.C., Torgeson, D.R., Borsa, F.: Structural, electronic, and magnetic properties of LaxSr1-xVO3 (0.1 <= x <= 1.0). Phys Rev B. 46, 10973–10985 (1992)CrossRefGoogle Scholar
  10. 10.
    Giannakopoulou, V., Odier, P., Bassat, J.M., Loup, J.P.: SrVO3 and Sr2VO4, electrical properties below and above room T. Solid State Commun. 93, 579–583 (1995)CrossRefGoogle Scholar
  11. 11.
    Hui, S.Q., Petric, A.: Conductivity and stability of SrVO3 and mixed perovskites at low oxygen partial pressures. Solid State Ionics. 143, 275–283 (2001)CrossRefGoogle Scholar
  12. 12.
    Ge, X.M., Chan, S.H.: Lanthanum strontium vanadate as potential anodes for solid oxide fuel cells. J Electrochem Soc. 156(3), B386–B391 (2009)CrossRefGoogle Scholar
  13. 13.
    Brugnoni, C., Ducati, U., Scagliotti, M.: SOFC cathode/electrolyte interface. Part I: reactivity between La0.85Sr0.15MnO3 and ZrO2-Y2O3. Solid State Ionics. 76, 177–182 (1995)CrossRefGoogle Scholar
  14. 14.
    Kuge’er, D., Holc, J., Hrovat, M., Bernik, S., Samardmija, Z., Kolar, D.: Interactions between a thick film LaMnO3 cathode and YSZ SOFC electrolyte during high temperature ageing. Solid State Ionics. 78, 79–85 (1995)CrossRefGoogle Scholar
  15. 15.
    Taimatsu, H., Wada, K., Yamamura, H.: Mechanism of reaction between lanthanum manganite and yttria-stabilized zirconia. J Am Ceram Soc. 75, 401–405 (1992)CrossRefGoogle Scholar
  16. 16.
    Yokokawa, H., Sakai, N., Kawada, T., Dokiya, M.: Thermodynamic analysis on interface between perovskite electrode and YSZ electrolyte. Solid State Ionics. 40/41, 398–401 (1990)CrossRefGoogle Scholar
  17. 17.
    van Roosmalen, J.A.M., Cordfunke, E.H.P.: Chemical reactivity and interdiffusion of (La, Sr)MnO3 and (Zr, Y)O2 solid oxide fuel cell cathode and electrolyte materials. Solid State Ionics. 52, 303–312 (1992)CrossRefGoogle Scholar
  18. 18.
    Yokokawa, H., Sakai, N., Kawada, T., Dokiya, M.:Chemical thermodynamic stability of the interface. In: Badwal, S.P.S., Bannister, M.J., Hannink, R.H.J. (eds.) Science and Technology of Zirconia V, pp. 752–763. Technomic Publishing Co., Lancaster (1993)Google Scholar
  19. 19.
    Stochniol, G., Syskakis, E., Naoumidis, A.: Chemical compatibility between strontium-doped lanthanum manganite and yttria-stabilized zirconia. J Am Ceram Soc. 78, 929–932 (1995)CrossRefGoogle Scholar

Copyright information

© Australian Ceramic Society 2018

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringNational Cheng Kung UniversityTainanTaiwan
  2. 2.Hierarchical Green-Energy Materials (Hi-GEM) Research CenterNational Cheng Kung UniversityTainanTaiwan

Personalised recommendations