Polymer electrolyte membrane fuel cell (PEMFC) stacks are assembled via the sequential stacking of a number of PEMFC unit cells. In such a process, stacking pressure is applied to the PEMFC stack. This compression pressure causes a change in mass transport and electrical conduction characteristics. In this paper, various stacking pressures were applied to three types of PEMFC unit cells with serpentine, parallel, and interdigitated cathode channels to understand the effect of stacking pressure on PEMFC performance. Numerical analyses were conducted with a validated 3-D PEMFC model. Deformation of the gas diffusion layer (GDL) by compression was not influenced by the channel type. However, the results of the electrochemical simulation showed different influence of stacking pressure depending on the operating voltage and cathode channel type. To improve PEMFC performance, it was concluded that the stacking pressure should be determined by considering the channel type and operating voltage.

聚合物电解质膜燃料电池（PEMFC）堆栈是通过顺序堆叠多个PEMFC单元电池来组装的。在这样的过程中，将堆叠压力施加到PEMFC堆叠上。该压缩压力引起传质和导电特性的变化。在本文中，对具有蛇形，平行和交叉指型阴极通道的三种类型的PEMFC单元电池施加了各种堆叠压力，以了解堆叠压力对PEMFC性能的影响。使用经过验证的3-D PEMFC模型进行了数值分析。气体扩散层（GDL）的压缩变形不受通道类型的影响。然而，电化学模拟的结果显示了取决于工作电压和阴极通道类型的堆积压力的不同影响。