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


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.


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


Supported by : 지식경제부


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