DOI QR코드

DOI QR Code

Analysis on the Fuel Cell Performance by the Impedance Method

임피던스법을 적용한 연료전지의 성능평가

  • 김귀열 (울산대학교 전기전자정보시스템공학부)
  • Published : 2007.10.01

Abstract

Fuel cell is a modular, high efficient and environmentally energy conversion device, it has become a promising option to replace the conventional fossil fuel based electric power plants. The high temperature fuel cell has conspicuous feature and high potential in being used as an energy converter of various fuel to electricity and heat. Corrosions in molten electrolytes and the electric conductivity across the oxide scale have crucial characteristics. When molten salts are involved, high temperature corrosions become severe. In this sense, corrosions of alloys with molten carbonates have the most severe material problems. Systematic investigation on corrosion behavior of Fe/21Cr/Ti or Al alloy has been done in (62+38)mol% (Li+K)$CO_3$ melt at $650^{\circ}C$ using the electrochemical impedance spectroscopy method. It was found that the corrosion current of these Fe-based alloys decreased with increasing Al or Ti. And Al addition improved the corrosion resistance of this type of specimen and more improvement of corrosion resistance was observed at the specimen added with Al.

References

  1. A. J. Bard and L. R. Faulkner, 'Electrochemical Methods, Fundamentals and Applications', John Wiley & Sons, New York, p. 120, 1980
  2. J. R. Macdonald, 'Impedance Spectroscopy, Emphasizing Solid Materials and Systems', John Wiley & Sons, p. 54, 1987
  3. K. Kordesch and G. Simader, 'Fuel Cells and Their Applications', VCH, p. 85, 1996
  4. Leo J. M. J. Blomen, and Michael N. Mugerwa, 'Fuel Cell Systems', Plenum, p. 465, 1993
  5. N. Q. Minh and T. Takahashi, 'Science and Technology of Ceramic Fuel Cell', Elsevier, p. 147, 1995
  6. W. Vielstich, A. Lamm, and H. A. Gasteiger, 'Handbook of Fuel Cells', John Wiley & Sons, p. 219, 2003
  7. A. J. Appleby, 'Fuel cell technology: status and future prospects', Energy, Vol. 21, p. 521, 1996 https://doi.org/10.1016/0360-5442(96)00030-8
  8. US Department of Energy, 'Fuel Cell Handbook', John Wiley & Sons, 5th edition, p. 110, 2000
  9. T. Fukui, 'Performance of NiO cathode covered with $LiCoO_{2}$ for MCFC', 2000 Fuel Cell Seminar, p. 215, 2000
  10. F. Zenith and S. Skogestad, 'Control of fuel cell power output', Journal of Process Control, Vol. 17, p. 333, 2007 https://doi.org/10.1016/j.jprocont.2006.10.004
  11. 김귀열, '용융탄산염형 연료전지의 연구동향', 전기전자재료, 9권, 8호, p. 851, 1996
  12. 김귀열, '연료전지 자동차의 가능성과 기술분석', 대한전기학회 하계학술대회논문집, 7권, p. 254, 1995
  13. 김귀열, '연료전지 자동차용으로 기대되는 PEFC 기술현황', 전기전자재료, 12권, 2호, p. 34, 1999
  14. 김귀열, '연료전지 자동차의 기술동향', 전기전자재료, 18권, 2호, p. 22, 2005