汽车工程 ›› 2025, Vol. 47 ›› Issue (7): 1277-1284.doi: 10.19562/j.chinasae.qcgc.2025.07.005

• • 上一篇    

PEMFC金属泡沫流场全形态三维性能模拟及结构优化

李楠(),白雪宜,杨抖,李贵敬,马诗会   

  1. 燕山大学车辆与能源学院,秦皇岛 066004
  • 收稿日期:2024-08-07 修回日期:2024-11-02 出版日期:2025-07-25 发布日期:2025-07-18
  • 通讯作者: 李楠 E-mail:linan@ysu.edu.cn
  • 基金资助:
    第二十七届中国科协年会学术论文。河北省自然科学基金(E2024203144)

Morphology 3D Performance Simulation and Structural Optimization of PEMFC Metal Foam Flow Field

Nan Li(),Xueyi Bai,Dou Yang,Guijing Li,Shihui Ma   

  1. School of Vehicle and Energy,Yanshan University,Qinhuangdao 066004
  • Received:2024-08-07 Revised:2024-11-02 Online:2025-07-25 Published:2025-07-18
  • Contact: Nan Li E-mail:linan@ysu.edu.cn

摘要:

流场设计是质子交换膜燃料电池(proton exchange membrane fuel cells,PEMFC)性能提升的关键,高孔隙率的金属泡沫材料被提出可作为PEMFC的备选流场。本文进行金属泡沫完整形状的形态重建,建立了以10 PPI、20 PPI、40 PPI、100 PPI 4种金属泡沫为阴极流场的PEMFC模型,并与常规平行和蛇形流场进行比较,发现金属泡沫流场能有效改善流道内反应气体及产物的输运与分布,强化电化学反应过程,且金属泡沫材料的PPI值越大,输出性能越好。此外,研究了不同气体扩散层孔隙率对含金属泡沫流场的PEMFC的影响,研究发现,孔隙率范围在0.4-0.6之间较为适宜。本研究还提出了一种基于伞形结构的宽韧带40 PPI金属泡沫结构改进方法,PEMFC的输出性能得到进一步提高。

关键词: 质子交换膜燃料电池, 全形态重建, 流场, 金属泡沫, 结构改进

Abstract:

Flow field design is the key to improve the performance of proton exchange membrane fuel cells (PEMFC). High-porosity metal foam materials have been suggested as substitute flow fields for PEMFC. In this paper, the entire morphology of the metal foam is reconstructed. A PEMFC model with four different metal foams (10 PPI, 20 PPI, 40 PPI, and 100 PPI) as the cathode flow field is established, which is compared with traditional parallel and serpentine flow fields. It is found that the metal foam flow field can strongly enhance the electrochemical reaction process by efficiently improving the transportation and distribution of reactive gases and products in the flow channel, and the larger the PPI value of metal foam material, the better the output performance. In addition, after examining the impact of various gas diffusion layer porosities on the PEMFC with metal foam flow field, it is determined that a porosity range of 0.4–0.6 is appropriate. A wide-ligament 40 PPI metal foam structural enhancement approach based on an umbrella is suggested in this study, and the output performance of PEMFC is further enhanced.

Key words: proton exchange membrane fuel cell, morphology reconstruction, flow field, metal foam, structural enhancement