Abstract In this study, the performance of a 10W PEM fuel cell with active area and Nafion 117 as membrane with 0.004 Platinum for the anode and cathode and triangular channel geometry is investigated experimentally. The effect of some important parameters such as input oxygen and hydrogen temperatures ( ), ( ), cell temperature ( ), input pressure (P) and oxygen and hydrogen flow rates ( ), ( ) investigated on the performance of the cell. An experimental equation is offered with least square method to correlate the data for the polarization curve. The results show that with increasing the input temperature of the oxygen and hydrogen from and the performance of the cell increases about 20%. Also the results show that with increasing the cell temperature from the performance of the cell increases about 18%.

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