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

  • 제23권2호
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  • Pages.134-142
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  • 2012
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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무인항공기용 경량화 직접메탄올연료전지 스택 개발을 위한 복합소재 분리판 제작 및 성능 평가 (I)

Evaluation and Fabrication of Composite Bipolar Plate to Develop a Light Weight Direct Methanol Fuel Cell Stack for Small-scale UAV Application (I)

  • 강경문 (인하대학교 기계공학과) ;
  • 박성현 (인하대학교 기계공학과) ;
  • 김진수 ((주) 일도에프엔씨 기술연구소) ;
  • 지현진 (국방과학기술연구소) ;
  • 주현철 (인하대학교 기계공학과)
  • 투고 : 2012.04.02
  • 심사 : 2012.04.27
  • 발행 : 2012.04.30
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초록

A bipolar plate is a major component of a fuel cell stack, which occupies 50~60% of the total weight and over 50% of the total cost of a typical fuel cell stack. In this study, a composite bipolar plate is designed and fabricated to develop a compact and light-weight direct methanol fuel cell (DMFC) stack for a small-scale Unmanned Aerial Vehicle (UAV) application. The composite bipolar plates for DMFCs are prepared by a compression molding method using resole type phenol resin as a binder and natural graphite and carbon black as a conductor filler and tested in terms of electrical conductivity, mechanical strength and hydrogen permeability. The flexural strength of 63 MPa and the in-plane electrical conductivities of 191 S $cm^{-1}$ are achieved under the optimum bipolar plate composition of phenol : 18%; natural graphite : 82%; carbon black : 3%, indicating that the composite bipolar plates exhibit sufficient mechanical strength, electrical conductivity and hydrogen permeability to be applied in a DMFC stack. A DMFC with the composite bipolar plate is tested and shows a similar cell performance with a conventional DMFC with graphite-based bipolar plate.

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참고문헌

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