Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Performance of Modified-Silicon Carbide Fiber Composites Membrane for Polymer Exchange Membrane Fuel Cells

표면처리된 실리콘 카바이드 섬유 복합막의 고분자 전해질 막 연료전지 성능

  • Park, Jeong Ho (Dep. of Chemical and biomolecular Eng. and Grad. Program of New energy and battery Eng., Yonsei Univ.) ;
  • Kim, Taeeon (Dep. of Chemical and biomolecular Eng. and Grad. Program of New energy and battery Eng., Yonsei Univ.) ;
  • Juon, Some (Dep. of Chemical and biomolecular Eng. and Grad. Program of New energy and battery Eng., Yonsei Univ.) ;
  • Cho, Yongil (Dep. of Chemical and biomolecular Eng. and Grad. Program of New energy and battery Eng., Yonsei Univ.) ;
  • Cho, Kwangyeon (Nano Convergence Intelligence Materials Team, 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.)
  • 박정호 (연세대학교 화공생명공학과 신에너지전지융합기술 협동과정) ;
  • 김태언 (연세대학교 화공생명공학과 신에너지전지융합기술 협동과정) ;
  • 전소미 (연세대학교 화공생명공학과 신에너지전지융합기술 협동과정) ;
  • 조용일 (연세대학교 화공생명공학과 신에너지전지융합기술 협동과정) ;
  • 조광연 (한국세라믹기술원 나노융합지능소재팀) ;
  • 설용건 (연세대학교 화공생명공학과 신에너지전지융합기술 협동과정)
  • Received : 2013.12.03
  • Accepted : 2014.02.28
  • Published : 2014.02.28
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Abstract

The organic-inorganic composite membrane in polymer exchange membrane fuel cells (PEMFCs) have several fascinating technological advantages such as a proton conductivity, thermal stability and mechanical properties. As the inorganic filler, silicon carbide (SiC) fiber have been used in various fields due to its unique properties such as thermal stability, conductivity, and tensile strength. In this study, composite membrane was successfully fabricated by modified-silicon carbide fiber. Modified process, as a novel process in SiC, takes reaction by phosphoric acid after oxidation process (generated homogeniusly $SiO_2$ layer on SiC fiber). The mechanical property which was conducted by tensile test of the 5wt% modified-$SiO_2@SiCf$ composite membrane was better than that of Aquivion casting membrane as well as ion cxchange capacity(IEC) and proton conductivity. In addition, the single cell performance was observed that the 5wt% modified-$SiO_2@SiCf$ composite membrane was approximately $0.2A/cm^2$ higher than that of a Aquivion casting electrolyte membrane and electrochemical impedance was improved with the charge transfer resistance and membrane resistance.

Keywords

References

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