| 摘要 |
This invention relates to a flow field plate for fuel cells. The flow field plate is cathode flow field plate or anode flow field plate. The flow field plate is formed with a flow path, gas inlet and gas outlet. One end of the flow path is communicated with the gas inlet, and the other end is communicated with the gas outlet. Wherein, on the flow field plates the cross-sectional area of the flow path adjacent the gas inlet is larger than the cross-sectional area of the flow path adjacent the gas outlet. By increasing the cross-sectional area of the flow path adjacent the gas inlet, the flow field plate of this invention effectively reduce the loss of water of the proton-exchange membranes, thereby enhancing the electricity generation properties of fuel cells. Meanwhile, by reducing the cross-sectional area of the flow path adjacent the gas outlet, the ability of the flow path to drain water is enhanced, effectively preventing water from accumulating in the flow path and thereby improving the stability, reliability, and performance of the cell. |
