Browse > Article
http://dx.doi.org/10.4191/KCERS.2006.43.12.775

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

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.)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.12, 2006 , pp. 775-780 More about this Journal
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
SOFC; Anode-supper; Thermal cycle; Degradation; Three-phase boundary;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 B. C. H. Steele and A. Heinzel, 'Materials for Fuel Cell Technology,' Nature, 414 [15] 345-52 (2001)   DOI   ScienceOn
2 O. Yamamoto, 'Solid Oxide Fuel Cells: Fundamental Aspects and Prospects,' Electrochemical Acta, 45 2423-35 (2000)   DOI   ScienceOn
3 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)   DOI   ScienceOn
4 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)   DOI   ScienceOn
5 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)
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)   DOI   ScienceOn
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)   과학기술학회마을
8 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)   DOI   ScienceOn
9 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)
10 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)
11 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)   DOI   ScienceOn