한국전기화학회:학술대회논문집

The Korean Electrochemical Society (한국전기화학회)
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Effect of Diffusion Layer for Cell Performance in DMFC

직접메탄올 연료전지에서 전지 성능에 대한 확산층의 영향

  • Kwon Bu-Kil (Department of Materials Science and Engineering, KJIST) ;
  • Park Kyung-Won (Department of Materials Science and Engineering, KJIST) ;
  • Choi Jong-Ho (Department of Materials Science and Engineering, KJIST) ;
  • Sung Yung-Eun (Department of Materials Science and Engineering, KJIST)
  • Published : 2001.06.01
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Abstract

The diffusion layer within MEA(membrane electrode assembly) has been evaluated important factor for improvement of cell performance in DMFC. The diffusion layer in MEA structure leads to the reduction of catalyst loss in active catalysts layer as well as prevention of water-flooding in cathode. Cell performance is directly affected by interior properties of diffusion layer materials. Acetylene Black and $RuO_2$ with large pore size and low porosity compared to Vulcan XC-72R gave better performance caused by vigorous methanol diffusion and water removal. And $RuO_2$ as diffusion layer materials showed different behavior in anode and cathode compartment, that is, diffusion layers in anode and cathode side make methanol diffusion and water removal facilitate, respectively.

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