Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Ca-Source on the Sintering and Electrical Properties of La0.7Ca0.3Cr0.9Co0.1O3-δ for Solid Oxide Fuel Cell Interconnects

고체산화물연료전지 연결재용 La0.7Ca0.3Cr0.9Co0.1O3-δ 조성계에 Ca Source 변화에 따른 소결 및 전기적 특성에 관한 연구

  • 박성태 (한국세라믹기술원 전자.광 소재센터) ;
  • 최병현 (한국세라믹기술원 전자.광 소재센터) ;
  • 지미정 (한국세라믹기술원 전자.광 소재센터) ;
  • 안용태 (한국세라믹기술원 전자.광 소재센터) ;
  • 최헌진 (연세대학교 세라믹공학과)
  • Received : 2011.03.31
  • Accepted : 2011.05.03
  • Published : 2011.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

Effects on sintering and electrical properties of $La_{0.7}Ca_{0.3}Cr_{0.9}Co_{0.1}O_{3-{\delta}}$ system, a interconnect material for cylindrical and flat tubular solid oxide fuel cells (SOFC), have been investigated by Ca-source when using $CaCO_3$ and $CaF_2$. When using $CaCO_3$ and $CaF_2$ was mixing as Ca-source, single phased perovskite solid solution was observed for each sample. The sintering temperature was decreased by $CaF_2$ contents was increased. When using 0.1 mole $CaF_2$ was densely sintered at $1400^{\circ}C$ and relative density was 93.8%. Also, electrical conductivity in oxidation and reducing atmosphere was 47, 4.3 S/cm, respectively, due to $F^-$ ion enhance the electrical conductivity in reducing atmosphere.

Keywords

References

  1. S. P. Jiang and S. H. Chan, “A Review of Anode Materials Development in Solid Oxide Fuel Cell,” J. Mater. Sci., 39 4405-39 (2004). https://doi.org/10.1023/B:JMSC.0000034135.52164.6b
  2. W. Z. Zhu and S. C. Deevi, “A Review on the Status of Anode Materials for Solid Oxide Fuel Cells,” Mater. Sci. Eng. A, 362 228-39 (2003). https://doi.org/10.1016/S0921-5093(03)00620-8
  3. Wincewicz. K. C. And Cooper. J. S. , “Taxonomies of SOFC Material and Manufacturing Alternatives,” J. Power Sources, 140 280-96 (2005). https://doi.org/10.1016/j.jpowsour.2004.08.032
  4. W. Z. Zhu and S.C. Deevi, “Development of Interconnect Materials for Solid Oxide Fuel Cells,” Mater. Sci. Eng. A, 348 227-43 (2003). https://doi.org/10.1016/S0921-5093(02)00736-0
  5. FURTADO, J. G. M and OLIVEIRA, R.N., “Developement of Lathanum Chromites-based Materials for Solid Oxide Fuel Cell Interconnects,” Revista Materia, 13 147-53 (2008). https://doi.org/10.1590/S1517-70762008000100018
  6. M. Oishi, K. Yashiro, J.-O. Hong, Y. Nigara, T. Kawada, and J. Mizusaki, “Oxygen Nonstoichiometry of B-site doped ,$LaCrO_3$,” J. Solid State Ionics, 178 307-12 (2007). https://doi.org/10.1016/j.ssi.2006.12.018
  7. F. Zhao, Y. Li, J. Gong, M. Liu, and Y. Chen, “Effect of $CaF_2$ on the Electrical Properties of Yttria-stabilized Zirconia,” Mater. Lett., 58 394-96 (2004). https://doi.org/10.1016/S0167-577X(03)00509-3
  8. L. Qiao, H. Zhou, and R. Fu, “Thermal Conductivity of AlN Ceramics Sintered with $CaF_2$ and $YF_3$,” Ceram. Int., 29 893-96 (2003). https://doi.org/10.1016/S0272-8842(03)00033-6
  9. H. Yokokawa, N. Sakai, T. Kawada, and M. Dokiya, “Chemical Thermodynamic Consoderations in Sintering of $LaCrO_3$-Based Perovskites,” J. Electrochem. Soc., 138 1018-27 (1991). https://doi.org/10.1149/1.2085708

Cited by

  1. Fabrication and Cell Properties of Flattened Tube Segmented-in-Series Solid Oxide Fuel Cell-Stack Using Decalcomania Paper vol.23, pp.3, 2013, https://doi.org/10.3740/MRSK.2013.23.3.206
  2. Electrochemical Properties of Segmented-in-series SOFC Using Ni-Fe/YSZ Core-shell Anode vol.51, pp.4, 2014, https://doi.org/10.4191/kcers.2014.51.4.357