Evaluation of Liquid-feed Direct Methanol Fuel Cell at Near-ambient Temperature for Mobile Applications

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  • OKAJIMA Keiichi
    Department of Materials Science and Chemical Engineering, Shizuoka University
  • SUETAKE Motoki
    Department of Materials Science and Chemical Engineering, Shizuoka University
  • FURUKAWA Kazuyoshi
    Department of Materials Science and Chemical Engineering, Shizuoka University
  • SUDOH Masao
    Department of Materials Science and Chemical Engineering, Shizuoka University

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<p>The performance of the liquid-feed DMFC system at near-ambient temperature was investigated for mobile applications. The open circuit voltage and the current density at 0.4 V of the liquid-feed DMFC system decreased with the increasing methanol flow rate because of methanol crossover. The open circuit voltage of the liquid-feed DMFC system monotonously decreased with the increasing methanol concentration. At a temperature of 300 K and a methanol flow rate of 0.1 mL/min, the open circuit voltage of 0.58 V at the methanol concentration of 0.5 mol/L decreased to 0.46 V at the concentration of 5 mol/L. Meanwhile, the current density was a maximum at 1.5 mol/L but dropped at the concentration of 0.5 mol/L due to a methanol deficiency.</p>

収録刊行物

  • Electrochemistry

    Electrochemistry 70 (12), 928-930, 2002-12-05

    公益社団法人　電気化学会

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