运用COMSOL软件模拟分析3种流道下的质子交换膜燃料电池输出性能. 在相同的操作条件下，比较了单蛇形流道、交指流道以及混合流道之间的性能差异，详细说明了3种流道下质子交换膜燃料电池输出性能差异的原因. 由模拟结果分析得出，混合流道输出性能最好，交指流道输出性能其次，单蛇形流道输出性能最差；混合流道的排水能力最好，氧气浓度分布的最均匀；混合流道阴极进出口氧气浓度差最小. 模拟结果对质子交换膜燃料电池结构的优化和设计具有重要的指导意义.

The COMSOL software was used to analyze the output performances in proton exchange membrane fuel cell(PEMFC) under three kinds of flow fields. Under the same operating conditions, the performance differences among single serpentine flow field, interdigitated flow field and mixed flow field are compared, and the causes of the differences in the output performances of PEMFC under three kinds of flow fields were analyzed. The simulation results showed that the output performance of the mixed flow field was the best, the output performance of the interdigitated flow field the second and the output performance of single serpentine flow field the worst. In addition, the drainability capacity of the mixed flow field was the best, and the oxygen concentration distribution was the most uniform. The mixed flow field exhibited minimun oxygen concentration difference between inlet and outlet. The simulation results have provieded an important guiding significance in the optimization of the structure and design of PEMFC.