Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Mechanical and Electrical Performance of Anode-Supported Solid Oxide Fuel Cells during Thermal Cyclic Operation

열 사이클에 따른 고체산화물 연료전지의 기계적 및 전기적 특성

  • Yang, Su-Yong (Strategic Technology Laboratory, Korea Electric Power Research Institute) ;
  • Park, Jae-Keun (Strategic Technology Laboratory, Korea Electric Power Research Institute) ;
  • Lee, Tae-Hee (Strategic Technology Laboratory, Korea Electric Power Research Institute) ;
  • Yu, Jung-Dae (Strategic Technology Laboratory, Korea Electric Power Research Institute) ;
  • Yoo, Young-Sung (Strategic Technology Laboratory, Korea Electric Power Research Institute) ;
  • Park, Jin-Woo (Daesung Industrial Co., Ltd.)
  • 양수용 (한국전력공사 전력연구원 전략기술연구소) ;
  • 박재근 (한국전력공사 전력연구원 전략기술연구소) ;
  • 이태희 (한국전력공사 전력연구원 전략기술연구소) ;
  • 유정대 (한국전력공사 전력연구원 전략기술연구소) ;
  • 유영성 (한국전력공사 전력연구원 전략기술연구소) ;
  • 박진우 (대성산업(주) 연구개발실)
  • Published : 2006.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Mechanical and electrical performance of anode-supported SOFC single cells were analyzed after thermal cyclic operation. The experiments of thermal cyclic cell-operation were carried out four times and performance of each cell was measured at different temperatures of 650, 700, and $750^{\circ}C$, respectively. As increasing the number of thermal cycle test, single cells showed poor I-V characteristics and lower 4-point bending strength. The anode polarization was also measured by AC-impedance analysis. The observation of the microstructure of the anodes in single cells proved that the average particle size of Ni decreased and the porosity of anode increased. It is thought that the thermal cycle caused the degradation of performance of single cells by reducing the density of three-phase boundary region.

Keywords

References

  1. B. C. H. Steele and A. Heinzel, 'Materials for Fuel Cell Technology,' Nature, 414 [15] 345-52 (2001) https://doi.org/10.1038/35104620
  2. O. Yamamoto, 'Solid Oxide Fuel Cells: Fundamental Aspects and Prospects,' Electrochemical Acta, 45 2423-35 (2000) https://doi.org/10.1016/S0013-4686(00)00330-3
  3. M. Kawano, K. Hashino, H. Yoshida, H. Ijichi, S. Takahashi, S. Suda, and T. Inagaki, 'Synthesis and Characterization of Composite Particles for Solid Oxide Fuel Cell Anodes by Spray Pyrolysis and Intermediate Temperature Cell Performance,' J. Power Sources, 152 196-99 (2005) https://doi.org/10.1016/j.jpowsour.2005.01.032
  4. Y. K. Lee and J. W. Park, 'Mechanical and Electrical Properties of $La_{0.68}Ca_{0.32}Cr_{0.97}O_3$ for SOFC Applications,' J. Kor. Mater. Res., 7 [3] 180-87 (1997)
  5. K. S. Lee, D. W. Seo, J. H. Yu, and S. K. Woo, 'A Study on the Improvement of Strenght in NiO-YSZ Porous Anode Material for Solid Oxide Fuel Cell(in Korean),' J. Kor. Ceram. Soc., 40 [3] 241-48 (2003) https://doi.org/10.4191/KCERS.2003.40.3.241
  6. T. Fukui, S. Ohara, M. Naito, and K. Nogi, 'Performance and Stability of SOFC Anode Fabricated from NiO/YSZ Composite Particles,' J. Eur. Ceram. Soc., 23 2963-67 (2003) https://doi.org/10.1016/S0955-2219(03)00311-X
  7. H. Moon, H. W. Lee, J. H. Lee, and K. H. Yoon, 'Correlation between the Microstructure and the Electrical Conductivity of SOFC Anode, Ni-YSZ : II. Temporal Variation (in Korean),' J. Kor. Ceram. Soc., 37 [12] 1140-45 (2000)
  8. J. H. Lee, H. Moon, H. W. Lee, J. D. Kim, and K. H. Yoon, 'Quantitative Analysis of Microstructure and Its Related Electrucal Property of SOFC Anode, Ni-YSZ Cermet,' Solid State Ionics, 148 15-26 (2002) https://doi.org/10.1016/S0167-2738(02)00050-4
  9. H. Tagawa, D. Simwonis, F. Tietz, and D. Stover, 'Nickel Coarsening in Annealed Ni/8YSZ Anode Substrates for Solid Oxide Fuel Cells,' Solid State Ionics, 132 241-51 (2000) https://doi.org/10.1016/S0167-2738(00)00650-0
  10. S. P. Yoon, J. H. Han, S. W. Nam, T. H. Lim, S. A. Hong, S. H. Hyun, and Y. S. Yoo, 'Electrochemical Characteristics of Anode-supported Solid Oxide Fuel Cells,' J. Kor. Electrochemical. Soc., 4 [2] 58-64 (2001)
  11. J. D. Kim, G. D. Kim, and J. A. Park, 'The Effect of Particle Size Ratio of LSM-YSZ Powders on SOFC Cathode Properties( in Korean),' J. Kor. Ceram. Soc., 37 [3] 227-32 (2000)