Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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Manufacture and Evaluation of Small Size PEMFC Stack Using Carbon Composite Bipolar Plate

탄소복합소재 분리판을 이용한 소형 고분자전해질 연료전지 스택 제작 및 성능분석

  • Han, C. (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • Choi, M. (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • Lee, J.J. (Regional Innovation Center for Fuel Cell Technology, Woosuk University) ;
  • Lee, J.Y. (Regional Innovation Center for Fuel Cell Technology, Woosuk University) ;
  • Kim, I.T. (Department of Applied Chemistry, Yamaguchi University) ;
  • An, J.C. (Research & Development Center, Hanwha Chemical) ;
  • Shim, J. (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • Lee, H.K. (Regional Innovation Center for Fuel Cell Technology, Woosuk University)
  • 한춘수 (군산대학교 나노화학공학과) ;
  • 최만수 (군산대학교 나노화학공학과) ;
  • 이지정 (우석대학교 수소연료전지 부품응용기술 지역혁신센터) ;
  • 이재영 (우석대학교 수소연료전지 부품응용기술 지역혁신센터) ;
  • 김인태 (야마구찌대학교 응용화학과) ;
  • 안정철 (한화석유화학 중앙연구소 신소재연구센터) ;
  • 심중표 (군산대학교 나노화학공학과) ;
  • 이홍기 (우석대학교 수소연료전지 부품응용기술 지역혁신센터)
  • Received : 2009.10.25
  • Accepted : 2010.05.20
  • Published : 2010.05.31
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Abstract

Small size polymer electrolyte membrane fuel cell (PEMFC) stacks were prepared using carbon composite and graphite bipolar plates and their performances were evaluated on reactant gas and operating time. In comparison to single cell and stack, it was identified that home-made bipolar plate was well-designed to maximize stack performance as high as that of single cell. During long-term operation, the performances of stacks using two different kinds of bipolar plates were compared. The decrease of performance in both stacks was accelerated with increasing load current. It was observed from stack test that the stack performance using carbon composite bipolar plate was very similar to that using graphite bipolar plate.

탄소복합소재 분리판의 연료전지 성능을 시험하기 위해 소형 고분자연료전지 스택을 제작하였으며 연료전지 운전에 따른 성능변화를 측정하여 탄소복합소재 분리판이 연료전지 스택의 성능에 미치는 영향을 조사하였다. 자체 설계한 가스유로로 디자인된 분리판과 MEA를 적층한 스택의 초기 성능과 장기간 운전에 따른 전압 감소를 측정하였다. 또한 장시간 운전 동안 각 셀의 전압 거동도 함께 측정하였으며 비교를 위해 흑연분리판을 이용하여 제작한 스택의 성능도 함께 시험하였다. 스택에서 각 셀의 성능은 단위전지에서의 성능과 유사하게 나타나 분리판과 스택의 구조가 셀의 성능을 충분히 보여줄 만큼 적절히 디자인된 것을 알 수 있었으며, 장시간 운전 동안 전류가 증가함에 따라 스택의 성능 감소도 점차 증가하였으며 두 종류의 스택이 유사한 성능 감소를 보여 자체 제작한 탄소복합소재 분리판이 흑연분리판과 유사한 성능을 보임을 알 수 있었다.

Keywords

References

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