Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on Sintering Inhibition of La0.8Sr0.2MnO3-∂ Cathode Material for Cathode-Supported Fuel Cells

  • Ahmed, Bilal (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Lee, Seung-Bok (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Song, Rak-Hyun (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Lee, Jong-Won (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Lim, Tak-Hyoung (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Park, Seok-Joo (Fuel Cell Research Center, Korea Institute of Energy Research)
  • Received : 2016.08.12
  • Accepted : 2016.09.07
  • Published : 2016.09.30
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Abstract

In this work, the effects of different sintering inhibitors added to $La_{0.8}Sr_{0.2}MnO_{3-{\partial}}$ (LSM) were studied to obtain an optimum cathode material for cathode-supported type of Solid oxide fuel cell (SOFC) in terms of phase stability, mechanical strength, electric conductivity and porosity. Four different sintering inhibitors of $Al_2O_3$, $CeO_2$, NiO and gadolinium doped ceria (GDC) were mixed with LSM powder, sintered at $1300^{\circ}C$ and then they were evaluated. The phase stability, sintering behavior, electrical conductivity, mechanical strength and microstructure were evaluated in order to assess the performance of the mixture powder as cathode support material. It has been found that the addition of $Al_2O_3$ undesirably decreased the electrical conductivity of LSM; other sintering inhibitors, however, showed sufficient levels of electrical conductivity. GDC and NiO addition showed a promising increase in mechanical strength of the LSM material, which is one of the basic requirements in cathode-supported designs of fuel cells. However, NiO showed a high reactivity with LSM during high temperature ($1300^{\circ}C$) sintering. So, this study concluded that GDC is a potential candidate for use as a sintering inhibitor for high temperature sintering of cathode materials.

Keywords

References

  1. D. Cao, Y. Sun, and G. Wang, "Direct Carbon Fuel Cell: Fundamentals and Recent Developments," J. Power Sources, 167 [2] 250-57 (2007). https://doi.org/10.1016/j.jpowsour.2007.02.034
  2. A. Gondolini, E. Mercadelli, P. Pinasco, C. Zanelli, C. Melandri, and A. Sanson, "Alternative Production Route for Supporting $La_{0.8}Sr_{0.2}MnO_{3-{\sigma}}-Ce_{0.8}Gd_{0.2}O_{2-{\sigma}}$ (LSM-GDC)", Int. J. Hydrogen Energy, 37 [10] 8572-81 (2012). https://doi.org/10.1016/j.ijhydene.2012.02.091
  3. C. W. Sun, R. Hui, and J. Roller, "Cathode Materials for Solid Oxide Fuel Cells: A Review," J. Solid State Electrochem., 14 [7] 1125-44 (2010). https://doi.org/10.1007/s10008-009-0932-0
  4. H. Y. Lee and S. M. Oh, "Origin of Cathodic Degradation and New Phase Formation at the $La_{0.9}Sr_{0.1}MnO_3/YSZ$ Interface," Solid State Ionics, 90 [1] 133-40 (1996). https://doi.org/10.1016/S0167-2738(96)00408-0
  5. W. Wang, M. D. Gross, J. M. Vohs, and R. J. Gorte, "The Stability of LSF-YSZ Electrodes Prepared by Infiltration," J. Electrochem. Soc., 154 [5] B439-45 (2007). https://doi.org/10.1149/1.2709510
  6. S. P. Simner, J. P. Shelton, M. D. Anderson, and J. W. Stevenson, "Interaction between $La(Sr)FeO_3$ SOFC Cathode and YSZ Electrolyte," Solid State Ionics, 161 [1] 11-8 (2003). https://doi.org/10.1016/S0167-2738(03)00158-9
  7. N. M. Sammes, R. Ratnaraj, and M. G. Fee, "The Effect of Sintering on the Mechanical Properties of SOFC Ceramic Interconnect Materials," J. Mater. Sci., 29 [16] 4319-24 (1994). https://doi.org/10.1007/BF00414217
  8. J. M. Villora, P. Callejas, M. F. Barba, and C. Baudin, "Statistical Analysis of the Fracture Behavior of Porous Ceramic Raschig Rings," J. Eur. Ceram. Soc., 24 [3] 589-94 (2004). https://doi.org/10.1016/S0955-2219(03)00245-0

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