Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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Process and Characteristics of High Power Catalyst Electrode for PEM Fuel Cell

  • Chang H. (Electrochemistry Lab, Samsung Advanced Institute of Technology) ;
  • Lim C. (Electrochemistry Lab, Samsung Advanced Institute of Technology) ;
  • Kim J. (Electrochemistry Lab, Samsung Advanced Institute of Technology)
  • Published : 1999.08.01
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Abstract

Novel process for high power catalyst electrode for PEM fuel cell has been developed. MEA having this catalyst electrode showed $0.5W/cm^2\;with\;0.2mg/cm^2$ of Pt loading at aunospheric humid hydrogen and oxygen condition. In this process, platinized carbon and plain carbon powders were coated with ionomer (Nafion) and hydrophobic polymer (PTFE), respectively and it could maximize two roles of catalyst electrode, l.e., reaction and gas supplying component. Those polarization characteristics proved the improved performance by reducing potential drop especially in the concentration polarization region.

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