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Reduction of Methanol Crossover in a Direct Methanol Fuel Cell by Using the Pt-Coated Electrolyte Membrane

Jung, Eun-Mi   (Advanced Fuel Cell Research Center, Korea Institute of Energy ResearchCC0186897  ); Rhee, Young-Woo   (Department of Chemical Engineering, Chungnam National UniversityUU0001302  ); Peck, Dong-Hyun   (Advanced Fuel Cell Research Center, Korea Institute of Energy ResearchCC0186897  ); Lee, Byoung-Rok   (Advanced Fuel Cell Research Center, Korea Institute of Energy ResearchCC0186897  ); Kim, Sang-Kyung   (Advanced Fuel Cell Research Center, Korea Institute of Energy ResearchCC0186897  ); Jung, Doo-Hwan   (Advanced Fuel Cell Research Center, Korea Institute of Energy ResearchCC0186897  );
  • 초록

    A Pt-layer was deposited on the anode side of a Nafion membrane via a sputtering method in order to reduce methanol crossover in a direct methanol fuel cell (DMFC). The methanol permeation and the proton conductivity through the modified membranes were investigated. The performances of the direct methanol fuel cell were also tested using single cells with a Nafion membrane and the modified membranes. The Pt-layers on the membrane blocked both methanol crossover and proton transport through the membranes. Methanol permeability and proton conductivity decreased with an increase of the platinum layer thickness. At methanol concentration of 2 M, the DMFC employing the modified membrane with a platinum layer of 66 nm-thickness showed similar performance to that of a DMFC with a bare Nafion membrane in spite of the lower proton conductivity of the former. The maximum power density of the cell using the modified membrane with a platinum layer of 66 nm-thickness increased slightly while that of the cell with the bare membrane decreased abruptly when a methanol solution of 6M was supplied.


  • 주제어

    Direct methanol fuel cell .   Modification of the membrane .   Pt-sputtered membrane .   Methanol crossover.  

  • 참고문헌 (16)

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  • 이 논문을 인용한 문헌 (1)

    1. 2011. "" 전기화학회지 = Journal of the Korean Electrochemical Society, 14(2): 83~91     

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