Decrease of PEMFC Performance by SO2 in Air

공기 중 SO2에 의한 고분자전해질 연료전지의 성능 감소

  • Lee, Ho (Department of Chemical Engineering, Sunchon National University) ;
  • Song, Jinhoon (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Kijoong (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Saehoon (HMC Eco Technology Research Institute) ;
  • Ahn, Byungki (HMC Eco Technology Research Institute) ;
  • Lim, Taewon (HMC Eco Technology Research Institute) ;
  • Park, Kwonpil (Department of Chemical Engineering, Sunchon National University)
  • 이호 (순천대학교 화학공학과) ;
  • 송진훈 (순천대학교 화학공학과) ;
  • 김기중 (순천대학교 화학공학과) ;
  • 김세훈 (현대자동차 환경기술연구소) ;
  • 안병기 (현대자동차 환경기술연구소) ;
  • 임태원 (현대자동차 환경기술연구소) ;
  • 박권필 (순천대학교 화학공학과)
  • Received : 2010.01.05
  • Accepted : 2010.01.27
  • Published : 2010.06.30

Abstract

The effects of $SO_2$ on the performance of proton exchange membrane(PEMFC) were investigated by introduction air containing $SO_2$ into cathode inlet of PEMFC. And the recovery of the cell performance by applying clean air, cycle voltammetry(CV) and high voltage holding following exposure contaminated air was studied. The $SO_2$ concentration range used in the experiments was from 20 ppb to 1.3 ppm. The performance degradation and recovery were measured by constant-current discharging, I-V polarization and electrochemical impedance spectroscopy(EIS). The cell voltage gradually decayed with time and decreased by 17 mV after 200 hours of 20 ppb $SO_2$ injection. The cell performance can be recovered partially by clean air flushing, CV and high voltage holding due to desorption of S from Pt catalyst.

Keywords

PEMFC;$SO_2$;Contamination;Degradation;Adsorption;Performance Recovery

Acknowledgement

Supported by : 지식경제부

References

  1. Busan City Institute of Health & Env., "Report of Investigation on Air Quality in Tunnel," 2009. 01.
  2. Mohtadi, R., Lee, W. K. and Van Zee, J. W., "Assessing Durability of Cathodes Exposed to Common Air Impurities," J. Power Sources, 138, 216-225(2004). https://doi.org/10.1016/j.jpowsour.2004.06.036
  3. Moore, J. M., Adcock, P. L., Lakeman, J. B. and Mepsted, G. O., "The Effects of Battlefield Contaminants on PEMFC Performance," J. Power Sources, 85, 254-260(2000). https://doi.org/10.1016/S0378-7753(99)00341-9
  4. Nagahara, Y., Sugawara, S. and Shinohara, K., "The Impact of Air Contaminants on PEMFC Performance and Durability," J. Power Sources, 182, 422-428(2008). https://doi.org/10.1016/j.jpowsour.2007.12.091
  5. Jing, F., Hou, M., Shi, W., Fu, J., Yu, H., Ming, P. and Yi, B., "The Effect of Ambient Contmination on PEMFC Performance," J. Power Sources, 166, 172-176(2007). https://doi.org/10.1016/j.jpowsour.2006.12.103
  6. Uribe, F. Smith, W., Wilson, M., Valerio, J., et al., "Electrodes for Polymer Membrane Operation on Hydrogen/Air and Reformate/Air," Hydrogen Fuel Cells and Infrastructure Technologies, FY 2003 Progress Report.
  7. Gould, B. D., Baturina, O. A. and Swider-Lyons, K. E., "Deactivation of Pt/VC Proton Exchange Membrane Fuel Cell Cathodes by $SO_2,\;H_2S$ and COS," J. Power Sources, 188, 89-95(2009). https://doi.org/10.1016/j.jpowsour.2008.11.072
  8. Louka, T., "Adsorption and Oxidation of Sulphur and of Sulphur Dioxide at the Platinum Electrode," J. Electroanal. Chem., 31, 319-332(1971). https://doi.org/10.1016/S0022-0728(71)80162-6