Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effect of Iodine-coated Bipolar Plates on the Performance of a Polymer Exchange Membrane (PEM) Fuel Cell

고분자 전해질 막 연료전지에서의 아이오딘이 코팅된 분리판의 성능 효과

  • Kim, Taeeon (Intelligence Nano Convergence Material Team, The Korea Institute of Ceramic Eng. and Tech.) ;
  • Juon, Some (Dep. of Chemical and biomolecular Eng. and Grad. Program of New energy and battery Eng., Yonsei Univ.) ;
  • Cho, Kwangyeon (Intelligence Nano Convergence Material Team, The Korea Institute of Ceramic Eng. and Tech.) ;
  • Shul, Yonggun (Dep. of Chemical and biomolecular Eng. and Grad. Program of New energy and battery Eng., Yonsei Univ.)
  • 김태언 (한국세라믹기술원 나노융합지능소재팀) ;
  • 전소미 (연세대학교 화공생명공학과, 신에너지전지융합기술 협동과정) ;
  • 조광연 (한국세라믹기술원 나노융합지능소재팀) ;
  • 설용건 (연세대학교 화공생명공학과, 신에너지전지융합기술 협동과정)
  • Received : 2013.01.03
  • Accepted : 2013.02.28
  • Published : 2013.02.28
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Abstract

Polymer exchange membrane (PEM) fuel cells have multifunctional properties, and bipolar plates are one of the key components in these fuel cells. Generally, a bipolar plate has a gas flow path for hydrogen and oxygen liberated at the anode and cathode, respectively. In this study, the influence of iodine applied to a bipolar plate was investigated. Accordingly, we compared bipolar plates with and without iodine coating, and the performances of these plates were evaluated under operating conditions of $75^{\circ}C$ and 100% relative humidity. The membrane and platinum-carbon layer were affected by the iodine-coated bipolar plate. Bipolar plates coated with iodine and a membrane-electrode assembly (MEA) were investigated by electron probe microanalyzer (EPMA) and energy-dispersive x-ray spectroscopy (EDS) analysis. Polarization curves showed that the performance of a coated bipolar plate is approximately 19% higher than that of a plate without coating. Moreover, electrochemical impedance spectroscopy (EIS) analysis revealed that charge transfer resistance and membrane resistance decreased with the influence of the iodine charge transfer complex for fuel cells on the performance.

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