3conclusion

This study was a preliminary stage for developing DMFC. The obtained results will be extended for next work. This study showed that unsupported Pt-Ru catalyst was superior to supported Pt-Ru catalyst for a direct methanol polymer electrolyte fuel cell.

The single cell using unsupported carbon Pt-RuO* binary metal powder as an anode catalyst and Pt black as a cathode catalyst was shown to be high performance. The performance of single cell was enhanced with increasing cell temperature. High operation temperature attributed to the combined effects of the reduction of ohmic resistance and polarization at high temperature. The higher cell voltage at constant current density were obtained when the cell was operated at cathode side pressure of 2 - 3 kg/ cm2 with anode side of atmosphere than the pressure of both sides were atmosphere. High cell voltage was obtained from the concentration of 2.5M methanol.

0 0

Post a comment