DOI QR코드

DOI QR Code

Electrochemical Performance and Cr Tolerance in a La1-xBaxCo0.9Fe0.1O3-δ (x = 0.3, 0.4 and 0.5) Cathode for Solid Oxide Fuel Cells

  • Choe, Yeong-Ju (Departments of Materials Science and Engineering, Inha University) ;
  • Hwang, Hae-Jin (Departments of Materials Science and Engineering, Inha University)
  • Received : 2015.07.15
  • Accepted : 2015.08.12
  • Published : 2015.09.30

Abstract

The electrochemical performance and Cr poisoning behavior of $La_{1-x}Ba_xCo_{0.9}Fe_{0.1}O_{3-{\delta}}$ (LBCF, x = 0.3, 0.4, 0.5) and $La_{0.6}Sr_{0.4}Co_{0.2}Fe_{0.8}O_{3-{\delta}}$ (LSCF) cathodes were investigated for solid oxide fuel cells (SOFCs). The polarization resistance of the LBCF/GDC/LBCF symmetrical cell was found to decrease with increasing Ba content (x value). This phenomenon might be associated with the high oxygen vacancy concentration in the LBCF sample, with x = 0.5. In addition, there was no chromium poisoning in the LBCF cathode. On the other hand, the polarization resistance of the LSCF cathode was found to significantly increase after exposure to gaseous chromium species; it appears that this result stemmed from the formation of $SrCrO_4$ phase. Therefore, it can be expected that LBCF can be a durable potential cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFC).

Keywords

Solid oxide fuel cells;Cathode;Perovskite;$La_{1-x}Ba_xCo_{0.9}Fe_{0.1}O_{3-{\delta}}$;Cr poisoning

Acknowledgement

Grant : Ni/YSZ계 코어-쉘 복합 SOFC 연료극 소재 개발

References

  1. A. Atkinson, S. Barnett, R. J. Gorte, J. Irvine, A.J. McEvoy, M. Mogensen, S.C. Singhal, and J. Vohs, "Advanced Anodes for High-temperature Fuel Cells," Nature materials, 3 [1] 17-27 (2004). https://doi.org/10.1038/nmat1040
  2. C. Lalanne, F. Mauvy, E. Siebert, M. Fontaine, J. Bassat, F. Ansart, P. Stevens, and J. Grenier, "Intermediate Temperature SOFC Single Cell Test Using $Nd_{1.95}NiO_{4+{\delta}}$ as Cathode," J. Eur. Ceram. Soc., 27 [13] 4195-98 (2007). https://doi.org/10.1016/j.jeurceramsoc.2007.02.144
  3. H. Zhao, F. Mauvy, C. Lalanne, J. Bassat, S. Fourcade, and J. Grenier, "New Cathode Materials for ITSOFC: Phase Stability, Oxygen Exchange and Cathode Properties of $La_{2-x}NiO_{4+{\delta}}$," Solid State Ionics, 179 [35] 2000-5 (2008). https://doi.org/10.1016/j.ssi.2008.06.019
  4. K Lee, J Seo, Y Lim, and H Hwang, "Electrochemical Performance of a $Nd_{2-x}Sr_xNiO_{4+{\delta}}/GDC$(x = 0, 0.4, 0.6) as a SOFC Cathode Material," J. Korean Ceram. Soc., 51 [1] 51-6 (2014). https://doi.org/10.4191/kcers.2014.51.1.051
  5. S. Li, Z. Lü, B. Wei, X. Huang, J. Miao, Z. Liu, and W. Su, "Performances of $Ba_{0.5}Sr_{0.5}Co_{0.6}Fe_{0.4}O_{3-{\delta}}-Ce_{0.8}Sm_{0.2}O_{1.9}$ Composite Cathode Materials for IT-SOFC," J. Alloys Compd., 448 [1] 116-21 (2008). https://doi.org/10.1016/j.jallcom.2006.10.032
  6. S. Jiang, J. Zhang, and X. Zheng, "A Comparative Investigation of Chromium Deposition at Air Electrodes of Solid Oxide Fuel Cells," J. Eur. Ceram. Soc., 22 [3] 361-73 (2002). https://doi.org/10.1016/S0955-2219(01)00280-1
  7. S. P. Jiang and X. Chen, "Chromium Deposition and Poisoning of Cathodes of Solid Oxide Fuel Cells- A Review," Int. J. Hydrogen Energy, 39 [1] 505-31 (2014). https://doi.org/10.1016/j.ijhydene.2013.10.042
  8. Y. Zhen and S. P. Jiang, "Characterization and Performance of (La, Ba)(Co, Fe) $O_3$ Cathode for Solid Oxide Fuel Cells with Iron-chromium Metallic Interconnect," J. Power Sources, 180 [2] 695-703 (2008). https://doi.org/10.1016/j.jpowsour.2008.02.093
  9. M. C. Tucker, H. Kurokawa, C. P. Jacobson, L. C. De Jonghe, and S. J. Visco, "A Fundamental Study of Chromium Deposition on Solid Oxide Fuel Cell Cathode Materials," J. Power Sources, 160 [1] 130-38 (2006). https://doi.org/10.1016/j.jpowsour.2006.02.017
  10. X. Li, X. Jiang, S. Pang, Q. Wang, Z. Su, and Q. Zhang, "Effect of Iron Substitution Content on Structure, Thermal Expansion Behavior and Electrochemical Properties of $La_{0.5}Ba_{0.5}Co_{1-y}Fe_yO_{3-{\delta}}$," Int. J. Hydrogen Energy, 36 [21] 13850-57 (2011). https://doi.org/10.1016/j.ijhydene.2011.07.083
  11. B. Deo and V. B. Tare, "Thermodynamic Properties of Barium Chromate," Mat. Res. Bull, 11[5] 469-72 (1976). https://doi.org/10.1016/0025-5408(76)90225-7
  12. X. Chen, L. Zhang, and S. P. Jiang, "Chromium Deposition and Poisoning on $(La_{0.6}Sr_{0.4-x}Ba_x)$$(Co_{0.2}Fe_{0.8})O_3$ $(0{\leq}x{\leq}0.4)$ Cathodes of Solid Oxide Fuel Cells," J. Electrochem. Soc., 155 [11] B1093-101 (2008). https://doi.org/10.1149/1.2969914
  13. S. Adler, "Limitations of Charge-transfer Models for Mixedconducting Oxygen Electrodes," Solid State Ionics, 135 [1] 603-12 (2000). https://doi.org/10.1016/S0167-2738(00)00423-9