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Abstract

A direct methanol fuel cell with 9cm 2 active area consists of Pt_Ru/C anode,Pt/C cathode and Nafion 115 membrane.The effect of operating conditions:methanol solution concentration,oxygen pressure and cell temperature on the cell performances was investigated.The results show that performance of single cell was enhanced by increasing oxygen pressure and cell temperature,and a maximum power density 75 mW/cm 2 was obtained in the range of 250_300 mA/cm 2 current density,0.2 MPa oxygen pressure,1.0 mol/L methanol concentration and 75 ℃ cell temperature.When cell operating at room temperature,a relatively low,but a stable performance of cell was also observed.

Keywords

DMFC, Pt_Ru/C, Pt/C, Polymer electrolyte, Performance of cell, Polarization curve.

Publication Date

2001-05-28

Online Available Date

2001-05-28

Revised Date

2001-05-28

Received Date

2001-05-28

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