• جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1007
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a direct-methanol fuel cell containing three parts: microchannels, electrodes, and a proton exchange membrane (pem), was investigated. nafion resin (nr) and polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (ps) were used as pems. preparation of pems, including compositing with other polymers and their solubility, was performed and their proton conductivity was measured by a four point probe. the results showed that the 5 % nafion resin has lower conductivity than the 5 % ps solution. the micro-fuel cell contained two acrylic channels, pem, and two platinum catalyst electrodes on a silicon wafer. the assembled micro-fuel cells used 2 m methanol at the flow rate of 1.5 ml min−1 in the anode channel and 5 × 10−3 m kmno4 at the flow rate of 1.5 ml min−1 in the cathode channel. the micro-fuel cell with the electrode distance of 300 μm provided the power density of 59.16 μw cm−2 and the current density of 125.60 μa cm−2 at 0.47 v.

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