Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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The performance of PEMFC after hydrogen sulfide poisoning under various operating conditions

황화수소 피독이 고분자전해질 막 연료전지의 성능에 미치는 영향

  • Lee, Soo (Department of Chemical Engineering, Changwon National University) ;
  • Jin, Seok-Hwan (Department of Chemical Engineering, Changwon National University) ;
  • Kim, Sang-Myoung (Department of Chemical Engineering, Changwon National University)
  • 이수 (창원대학교 공과대학 화공시스템공학과) ;
  • 진석환 (창원대학교 공과대학 화공시스템공학과) ;
  • 김상명 (창원대학교 공과대학 화공시스템공학과)
  • Received : 2011.02.14
  • Accepted : 2011.03.10
  • Published : 2011.03.30
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Abstract

Polymer electrolyte membrane fuel cell (PEMFC) performance degrades when hydrogen sulfide ($H_2S$) is present in the fuel hydrogen gas; this is referred to as $H_2S$ poisoning. This paper reveals $H_2S$ poisoning on PEMFC by measuring electrical performance of single cell FC under various operating conditions. The severity of $H_2S$ poisoning depended on $H_2S$ concentration under best operating conditions($65^{\circ}C$ of cell temperature and 100% of anode humidification). $H_2S$ adsorption occured on the surface of catalyst layer on MEA, but not on the gas diffusion layer(GDL) by analyzing SEM/EDX data. In addition, MEA poisoning by $H_2S$ was cumulative but reversible. After poisoning for less than 150 min, performance of PEMFC was recovered up to 80% by just inert nitrogen gas purging.

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References

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