Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on Performance Degradation of PEMFC by Repetitive Startup/Shutdown Cycling

시동/정지 반복에 따른 고분자전해질 연료전지의 성능 저하에 관한 연구

  • 조유연 (서울시립대학교, 화학공학과) ;
  • 조은애 (한국과학기술연구원 연료전지연구단) ;
  • 김정현 (서울시립대학교, 화학공학과)
  • Published : 2009.08.30
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Abstract

To investigate degradation mechanism of PEMFC operated with repetitive startup/shutdown cycling, i-V characteristics, impedance, cyclic voltamograms were measured. OCV decreased from 0.967 to 0.951 V while the cell voltage at 800mA/$cm^2$ from 0.657 to 0.563V, implying that the electrodes rather than membrane electrolyte was damaged during the cycling operation. Electrochemical analyses supported that the performance degradation could be mainly attributed to degradation of the electrodes such as a decrease in electrochemical active surface area rather than degradation of membrane.

Keywords

References

  1. J. R Selman : 'Fuel Cells ; Trends in Research and Application.' Electric Power Research Institute, Calif., 1986
  2. D. Linden: 'Handbook of Batteries and Fuel Cells.' McGraw-Hill, NewYork, 1984
  3. A. Pozio, R. F. Silva, M. De Francesco and L. Giorgi, 'Nation Degradation in PEFCs from End Plate Iron Contamination', Electrochimica Acta, Vol. 48, 2003, pp. 1543-1549 https://doi.org/10.1016/S0013-4686(03)00026-4
  4. D. E. Curtin, R. D. Lousenberg, T. J. Henry, P. C. Tangeman and M. E. Tisack: 'Advanced Materials for Iimproved PEMFC Performance and Life', Journal of Power Sources, Vol. 131, 2004, pp. 41-48 https://doi.org/10.1016/j.jpowsour.2004.01.023
  5. G. X. Wang, L. Yang, J. Z. Wang, H. K. Liu and S. X. Dou : 'Enhancement of Ionic Conductivity of PEO Based Polymer Electrolyte by the Addition of Nanosize Ceramic Powders', Journal of Nanoscience and Nanotechnology, Vol. 5, 2005, pp. 1135-1140 https://doi.org/10.1166/jnn.2005.165
  6. J. Xie, D. L. Wood, K. L. More, P. Atanassov and R. L. Borup : 'Microstructural Changes of Membrane Electrode Assemblies during PEFC Durability Testing at High Humidity Conditions', Journal of Electrochemical Society, Vol. 152, 2005, pp. A1011-A1020 https://doi.org/10.1149/1.1873492
  7. Y. Takagi and Y. Takakuwa : 'Effect of Shutoff Sequence of Hydrogen and Air on Performance Degradation in PEFC', ECS Transactions, Vol. 3, 2006, pp. 855-860 https://doi.org/10.1149/1.2356203
  8. C. A. Reiser, L. Bregoli, T. W. Patterson, J. S. Yi, J. D. Yang, M. L. Perry and T. D. Jarvi: 'A Reverse-Current Decay Mechanism for Fuel Cells', Electrochemical and Solid-State Letters, Vol. 8, 2005, pp. A273-A276 https://doi.org/10.1149/1.1896466
  9. Z. Qi, H. Tang, Q. Guo and B. Du : 'Investigation on 'Saw-Tooh' Behavior of PEM Fuel Cell Performance During Shutdown and Restart Cycles', Journal of Power Sources, Vol. 161, 2000, pp. 864-871 https://doi.org/10.1016/j.jpowsour.2006.04.137
  10. P. T. Yu, W. Gu, R. Makharia, F. T. Wagner and H. A. Gasteiger : 'The Impact of Carbon Stability on PEM Fuel Cell Startup and Shutdown Voltage Degradation', ECS Transactions, Vol. 3, 2006, pp. 797-809 https://doi.org/10.1149/1.2356199
  11. J. E. Owejan, P. T. Yu and R. Makharia : 'Mitigation of Carbon Corrosion in Microporous Layers in PEM Fuel Cells', ECS Transactions, Vol. 11, 2007, pp. 1049-1057 https://doi.org/10.1149/1.2781018
  12. H. J. Kim, S. J. Lim, J. W. Lee, I. G. Min, S. Y. Lee, E. A. Cho, I. H. Oh, J. H. Lee, S. C. Oh, T. W. Lim, T. H. Lim : 'Development of shutdown process for a proton exchange membrane fuel cell', Journal of Power Sources, Vol. 180, 2008, pp. 814-820 https://doi.org/10.1016/j.jpowsour.2007.12.112
  13. H. J. Kim, E. A. Cho, J. H. Jang, H. J. Kim, T. H. Lim, I. H. Oh, J. J. Ko, S. C. Oh : 'Development of a Durable PEMFC Startup Process by Applying a Dummy Load', Journal of The Electrochemical Society, Vol. 156, 2009, pp. B955-B961 https://doi.org/10.1149/1.3148222