Abstract:A passive and air breathing direct-methanol fuel cell(DMFC) was installed.Using graphite plates,the anode and cathode plates were prepared which flow field configuration was straight and parallel flow field and its groove was hollowed.A methanol cavity was manufactured in the anode plates.The results show that the best methanol concentration was 1.5 mol/L,Pt loading of cathod can significantly effect power density,and the cell performance was increasing when the temperature of cell operating and content of Nafion were increased.The temperature of cell operating is the most impacting factor.The peak power density can reach 12.72 mW/cm2 under the following conditions: 4.57 mg/cm2 Pt-Ru catalyst in the anode,2.18 mg/cm2 Pt catalyst in the cathode,1.5 mol/L methanol solution and ambient air.