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Structural and Electrical Properties of Composites Based on Ni and NiAl Alloys for SOFC Application

  • S. M. Pikalov
  • E. Yu. Pikalova
  • V. G. Bamburov
Chapter
Part of the Innovation and Discovery in Russian Science and Engineering book series (IDRSE)

Abstract

Ni and NiAl alloys were utilized as the components of the composites on the base of Zr0.81Y0.19O2-δ and Al2O3 ceramic powders. The synthesis of composites was performed directly from the mechanical mixtures of metal and ceramic powders by the air plasma spraying method. The samples were made in the shape of porous tubes 20 cm long by 1 cm in diameter. Phase content and their weight ratio were evaluated by the XRD method after spraying and heat treatment at 1350 °C in different atmospheres. It was found that in the deposited samples, Ni stays mainly in a metal state with a small amount of NiO which at the stage of Ar treatment completely transforms into metal Ni. Doping by Al in a small amount (5%) leads to an appearance of spinel which, after decomposition and reduction in hydrogen, favours more uniform Ni distribution in the ceramic matrix and prevents a coarsening of Ni particles. This leads to the cermet having increased conductivity and better thermal properties. The total conductivity of Ni95Al5-Al2O3 cermet in hydrogen was 1374 S/cm at 600 °C with the mean value of the coefficient of thermal expansion equal to 10.5 × 10−6 K−1 in the range of 25–900°С which makes it a prospect for usage as a supported anode for solid oxide fuel cell production.

Keywords

SOFC Composite anode Ni-cermet Intermetallide Air plasma spraying Conductivity CTE 

Notes

Acknowledgements

The present work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0006.

References

  1. 1.
    Hui, R., Wang, Z., Kesler, O., Rose, L., Jankovic, J., Yick, S., Maric, R., Ghosh, D.: Thermal plasma spraying for SOFCs: Applications, potential advantages, and challenges, review. J. Power Sources. 170, 308–323 (2007)CrossRefGoogle Scholar
  2. 2.
    Cowin, P.I., Petit, C.T.G., Lan, R., Irvine, J.T.S., Tao, S.: Recent progress in the development of anode materials for solid oxide fuel cells. Adv. Energy Mater. 1(3), 314–332 (2011)CrossRefGoogle Scholar
  3. 3.
    Shiratori, Y., Teraoka, Y., Sasaki, K.: Ni1−x−yMgxAlyO–ScSZ anodes for solid oxide fuel cells. Solid State Ionics. 177(15–16), 1371–1380 (2006)CrossRefGoogle Scholar
  4. 4.
    Orui, H., Chiba, R., Nozawa, K., Arai, H., Kanno, R.: High temperature stability of alumina containing nickel-zirconia cermets for solid oxide fuel cell anodes. J. Power Sources. 238, 74–80 (2013)CrossRefGoogle Scholar
  5. 5.
    Sadykov, V.A., Usoltsev, V.V., Fedorova, Y.E., et al.: Design of medium–temperature solid oxide fuel cells on porous supports of deformation strengthened Ni–Al alloy. Russian J. Electrochem. 47(4), 488–493 (2011)CrossRefGoogle Scholar
  6. 6.
    Pikalov, S.M., Polukhin, V.A., Kuznetsov, I.A.: Correlation of electromagnetic and mechanical properties of functional plasma sprayed coatings and criterion of non-destructive control quality. Metally. 6, 146–152 (1995)Google Scholar
  7. 7.
    Pikalov, S.M., Selivaniv, E.N., Chumarev, V.M., Pikalova, E.Yu., Zaikov, Yu.P., Ermakov, A.V.: Composite electrode material for electrochemical devices. Patent Ru № 2523550, 20.07.2014Google Scholar
  8. 8.
    Sridhar, S., Sichen, D.U., Seetharaman, S.: Investigation of the kinetics of reduction of nickel oxide and nickel aluminate by hydrogen. Z. Met. 85, 616–620 (1994)Google Scholar
  9. 9.
    Tsipis, E.V., Kharton, V.V.: Electrode materials and reaction mechanisms in solid oxide fuel cells: A brief review. J. Solid State Electrochem. 12(11), 1367–1391 (2008)CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • S. M. Pikalov
    • 1
  • E. Yu. Pikalova
    • 2
    • 3
  • V. G. Bamburov
    • 3
    • 4
  1. 1.Institute of Metallurgy, UB RASYekaterinburgRussia
  2. 2.Institute of High Temperature Electrochemistry, UB RASYekaterinburgRussia
  3. 3.Department of Environmental EconomicsUral Federal UniversityYekaterinburgRussia
  4. 4.Institute of Solid State Chemistry, UB RASYekaterinburgRussia

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