Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Optimum Reduction Condition of SDC-NiO Composite Anode for SDC-based Single Chamber Solid Oxide Fuel Cells

SDC계 단실형 고체산화물 연료전지용 SDC-NiO 복합음극의 최적 환원 조건

  • Min, Ji-Hyun (Department of Materials Science & Engineering, Yonsei University) ;
  • Ahn, Sung-Jin (Department of Materials Science & Engineering, Yonsei University) ;
  • Moon, Joo-Ho (Department of Materials Science & Engineering, Yonsei University) ;
  • Kim, Joo-Sun (Center for Energy Materials Research, KIST)
  • 민지현 (연세대학교 세라믹 공학과) ;
  • 안성진 (연세대학교 세라믹 공학과) ;
  • 문주호 (연세대학교 세라믹 공학과) ;
  • 김주선 (한국과학기술연구원 에너지재료연구단)
  • Published : 2007.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

We have determined an optimal reduction condition for NiO-based anode in single chamber solid oxide fuel cells that involve samaria-doped ceria (SDC) as an electrolyte. Optimal condition should not only induce sufficient reduction of NiO to Ni, but also prevent the reduction of SDC electrolyte in order to achieve high open circuit voltage (OCV) and power output. Thermodynamic consideration allowed us to determine the optimal anode reduction condition as $96%H_2-4%H_2O$ atmosphere at $250^{\circ}C$. This finding was in a good agreement with the experimental verifications by monitoring the conductivities of SDC and NiO under different reducing conditions.

Keywords

References

  1. O'Hayre, S.-W. Cha, W. Colella, and F. B. Prinz, 'Fuel Cell Fundamentals,' pp. 244-46, John Wiley & Sons, New York, 2006
  2. N. Q. Minh, 'High Temperature Fuel Cells. Part II: The Solid Oxide Fuel Cell,' Chemtech, 21 120-26 (1991)
  3. N. Q. Minh, 'Ceramic Fuel Cell,' J. Am. Ceram. Soc., 76 [3] 563-88 (1993) https://doi.org/10.1111/j.1151-2916.1993.tb03645.x
  4. E. Perry Murray, T. Tsai, and S. A. Barnett, 'A Direct-methanol Fuel Cell with a Ceria-based Anode,' Nature, 400 649- 51 (1999) https://doi.org/10.1038/23220
  5. S. Park, J. M. Vohs, and R. j. Gorte, 'Direct Oxidation of Hydrocarbons in a Solid Oxide Fuel Cell,' Nature, 404 265- 67 (2000) https://doi.org/10.1038/35005040
  6. S. W. Tao and J. T. S. Irvine, 'A Redox-stable Efficient Anode for Solid-oxide Fuel Cells,' Nature Mater., 2 320-23 (2003) https://doi.org/10.1038/nmat871
  7. W. van Gool, 'The Possible Use of Surface Migration in Fuel Cells and Heterogeneous Catalysis.' Philips Res. Repts, 20 81-93 (1965)
  8. C. K. Dyer, 'A Novel Thin-film Electrochmical Device for Energy Conversion,' Nature, 343 547-48 (1990) https://doi.org/10.1038/343547a0
  9. T. Hibino, 'A Low-operating-temperature Solid Oxdie Fuel Cell in Hdrocarbon-air Mixtures,' Science, 288 2031-33 (2000) https://doi.org/10.1126/science.288.5473.2031
  10. M. Tano, A. Tomita, M. Sano, and T. Hibino, 'Recen Advances in Single-chamber Solid Oxide Fuel Cells :A Review,' Solid State Ionics, 177 3351-59 (2007) https://doi.org/10.1016/j.ssi.2006.10.014
  11. Z. Shao, S. M. Haile, J. Ahn, P. D. Ronney, Z. Zhan, and S. A. Barneet, 'A Themally Self-sustained Micro Solid-oxide Fuel-cell Stack with High Power Density,' Nature, 435 795- 98 (2005) https://doi.org/10.1038/nature03673
  12. Z. Shao and S. M. Haile, 'A High-performance Cathode for the Next Generation of Solid-oxide Fuel Cells,' Nature, 431 170-73 (2004) https://doi.org/10.1038/nature02863
  13. Z. Shao, C. Kwak, and S. M. Haile, 'Anode-supported thin- Film Fuel Cells Operated in a Single Chamber Configuration 2T-I-12,' Solid State Ionics, 175 39-46 (2004) https://doi.org/10.1016/j.ssi.2004.09.018
  14. T. Suzuki, P. Hasinski, H. U. Anderson, and F. Dogan, 'Role of Composite Cathodes in Single Chamber SOFC,' Journal of the Electrochemical Society, 151 [10] A1678-82 (2004) https://doi.org/10.1149/1.1786071
  15. T. Matsui, M. Inaba, A. Mineshige, and Z. Ogumi, 'Electrochemical Properties of Ceria-based Oxides for Use in Intermediate-temperature SOFCs,' Solid State Ionics, 176 647-54 (2005) https://doi.org/10.1016/j.ssi.2004.10.011
  16. T. Matsui, T. Kosaka, M. Inaba, A. Mineshige, and Z. Ogumi, 'Effects of Mixed Conduction on the Open-circuit Voltage of Intermediate-temperature SOFCs Based on Smdoped Ceria Electrolytes,' Solid State Ionics, 176 663-68 (2005) https://doi.org/10.1016/j.ssi.2004.10.010
  17. X. Zhang, M. Robertson, C. Dees-Petit, W. Qu, O. Kesler, R. Maric, and D. Ghosh, 'Internal Shorting and Fuel Loss of a Low Temperature Solid Oxide Fuel Cell with SDC Electrolyte,' J. Power Sources, 164 668-77 (2007) https://doi.org/10.1016/j.jpowsour.2006.10.087