References

1. A.K. Shukla, P.A.Christensen, AHamnctt, and M.P.Hogarth, "A vapor-feed direct-methanol fuel cell with proton - exchange membrane electrolyte", J. Power Sources, 55, 87(1995)

2. J.B.Goodenough et.al. "Methanol oxidation on unsupported and carbon supported Pt-Ru anode",/. Electronal. Chem, 240, 133(1988)

3. X.Ren, M.S.Wilson, S.Gottcsfcld, "High performance direct methanol polymer electrolyte fuel cells", J. Electrochem. Soc., 143, L12(1996)

4. N.A.Hampson, M.J.Wilars, "The methanol - air fuel cell: A sclcctive review of methanol oxidation at platinum electrode in acid electrolyte", J.Power Sources, 4, 191(1979)

Potential (V vs. SCE)

Fig. 1 Cyclic voltammogram for carbon supported Pt and Pt-Ru electrode obtained at a scan rate of 20mVs'' in H2S04 + 1M CHjOH.

Potential (V vs. SCE)

Fig. 1 Cyclic voltammogram for carbon supported Pt and Pt-Ru electrode obtained at a scan rate of 20mVs'' in H2S04 + 1M CHjOH.

Current dcnsIt)(mA/cm2) Fig. 2 The performance of single cell using by carbon supported Pt-Ru elecUode for various methanol concentrations at 130°C. anode : 20 w/o Pt-lOw/o Ru/C(1.5 mg Pt/cm2), and atmosphere, and 2.5M methanol at 9ml/min. cathode : 20w/o Pt/C(0.4mg Pt/cm2), and 3Kg/cm2 02 at 105 seem.

Current density (mA/cm )

Fig. 3 The performance of single cell by using unsupported Pt-RuOx electrode, anode : 4.0mg/cm2 Pt-RuO„ lkg/cm2, and 2.5M methanol at 9ml/min. cathode: 4.0mg/cm2 Pt-black, 3 kg/cm2, 02 at 105 seem.

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