Performance of the Small PEMFC according to Cathode

Cathode에 따른 소형 PEM 연료전지의 성능 변화

  • Lee, Se-Won (School of Mechanical and Aerospace Engineering, Seoul National Univ.) ;
  • Lee, Kang-In (School of Mechanical and Aerospace Engineering, Seoul National Univ.) ;
  • Park, Min-Soo (BK21 School for Creative Engineering Design of Next Generation Mechanical and Aerospace Systems, Seoul National Univ.) ;
  • Chu, Chong-Nam (School of Mechanical and Aerospace Engineering, Seoul National Univ.)
  • 이세원 (서울대학교 기계항공공학부 대학원) ;
  • 이강인 (서울대학교 기계항공공학부 대학원) ;
  • 박민수 (서울대학교 차세대 기계항공시스템 창의설계 인력양성사업단) ;
  • 주종남 (서울대학교 기계항공공학부 대학원)
  • Published : 2008.08.30

Abstract

In this paper, experiments with an air-breathing proton exchange membrane fuel cell (PEMFC) for mobile devices were carried out according to cathode conditions. These conditions are defined by the cathode flow field plate type (the channel type, the open type) and the cathode surface direction. Single-cell and 6-cell stack were used in the experiments. The experimental results showed that the open-type cathode flow field plate gave a better performance than the small channel type. In the experiments related to the direction of the slits on the cathode flow field plate, the horizontal slit cell was better than the vertical one. With respect to the cathode surface direction, when the cathode surface is placed in the direction normal to the ground, the PEMFC generated more stable power in the mass transport loss region. Since stable power in the mass transport region is closely related to the air supply, computational fluid dynamics (CFD) analysis for air-breathing PEMFC of different cathode surface directions was performed.

Keywords

PEMFC;cathode;fuel cell;air-breathing

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