Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study to Simulate Cell Voltage-Reversal Behavior Caused by Local Hydrogen Starvation in a Stack of Fuel Cell Vehicle

연료전지차 스택 내 국부적 수소 부족에 기인한 셀 역전압 거동 모사에 대한 연구

  • Park, Ji Yeon (Fuel Cell Vehicle Team 1, R&D Division, Hyundai Motor Company) ;
  • Im, Se Joon (Fuel Cell Vehicle Team 1, R&D Division, Hyundai Motor Company) ;
  • Han, Kookil (Fuel Cell Vehicle Team 1, R&D Division, Hyundai Motor Company) ;
  • Hong, Bo Ki (Fuel Cell Vehicle Team 1, R&D Division, Hyundai Motor Company)
  • 박지연 (현대자동차 연구개발본부 연료전지개발1팀) ;
  • 임세준 (현대자동차 연구개발본부 연료전지개발1팀) ;
  • 한국일 (현대자동차 연구개발본부 연료전지개발1팀) ;
  • 홍보기 (현대자동차 연구개발본부 연료전지개발1팀)
  • Received : 2013.07.04
  • Accepted : 2013.08.31
  • Published : 2013.08.31
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Abstract

A clear understanding on cell voltage-reversal behavior due to local hydrogen starvation in a stack is of paramount importance to operate the fuel cell vehicle (FCV) stably since it affects significantly the cell performance and durability. In the present study, a novel experimental method to simulate the local cell voltage-reversal behavior caused by local hydrogen starvation, which typically occurs only one or several cells out of several hundred cells in a stack of FCV, has been proposed. Contrary to the conventional method of overall fuel starvation, the present method of local hydrogen starvation caused the local cell voltage-reversal behavior in a stack very well. Degradation of both membrane electrode assembly (i.e., pin-hole formation) and gas diffusion layer due to an excessive exothermic heat under voltage-reversal condition was also observed clearly.

Keywords

References

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