The performance and durability of proton-exchange membrane fuel cells (PEMFCs) are constrained by fuel delivery and water management. Based on parallel and serpentine flow fields, the effects of triangular baffles (30°, 45°, and 60°) and conical runners (1°, 2°, and 3°) on the performance output of PEMFC at different angles are studied. The three-dimensional and multi-phase models are established by using the simulation software package (ANSYS FLUENT). The findings demonstrate that the battery's output performance reaches its peak when the baffle angle is set at 45°. When the output current density is 0.7 A/cm², the power density of the 45° baffle increases by 18.87%. The pressure loss is not only lower than that of the 60° baffle but also exhibits no significant difference when compared to the 30° baffle. In addition, the introduction of conical channels has enhanced the output performance of PEMFCs in comparison to the traditional serpentine flow field. The power density of the 2°tapered channel exhibits a 12.65% increase when the output current density reaches 0.8 A/cm². However, the performance output of the 3°tapered channel is inferior to that of the conventional serpentine flow field.

中文翻译：

---

挡板和锥通道倾斜角度对质子交换膜燃料电池输出性能的影响

质子交换膜燃料电池 (PEMFC) 的性能和耐用性受到燃料输送和水管理的限制。基于平行流场和蛇形流场，研究了三角形挡板（30°、45°和60°）和锥形流道（1°、2°和3°）在不同角度下对PEMFC性能输出的影响。利用仿真软件包(ANSYS FLUENT)建立三维多相模型。结果表明，当挡板角度设置为45°时，电池的输出性能达到峰值。当输出电流密度为0.7 A/cm ²时，45°挡板的功率密度增加了18.87%。其压力损失不仅低于60°挡板，而且与30°挡板相比也没有显着差异。此外，与传统蛇形流场相比，锥形通道的引入增强了质子交换膜燃料电池的输出性能。当输出电流密度达到0.8 A/cm ²时，2°锥形通道的功率密度增加了12.65% 。然而，3°锥形通道的性能输出不如传统蛇形流场。