质子交换膜燃料电池三种流场结构的性能研究  

Performance study of PEMFC with three different flow fields

作　　者：陆佳宙 夏玉珍 雷航伟 胡桂林 LU Jiazhou;XIAYuzhen;LEI Hangwei;HU Guilin(School of Mechanical and Energy Engineering,Zhejiang University of Science&Technology,Hangzhou Zhejiang 310023,China)

机构地区：[1]浙江科技学院机械与能源工程学院,浙江杭州310023

出　　处：《电源技术》2023年第4期502-504,共3页Chinese Journal of Power Sources

基　　金：国家自然科学基金面上项目(11972324)。

摘　　要：平行、交指和蛇形是质子交换膜燃料电池最常用的三种流场结构,为研究三者性能差异,利用CFD技术建模进行仿真分析,在反应气体均充足的条件下,对比三种流场燃料电池的氢气摩尔浓度、流道压降、催化层温度、水摩尔浓度的分布和极化曲线。结果表明,蛇形流场性能最优,交指流场其次,平行流场最差。尽管蛇形流场压降最大,但其催化层中温度最高,阳极氢气分布和阴极水浓度分布也最均匀,且其性能优势在高电流密度下更为突出。Parallel,interdigital and serpentine flow fields are the most commonly used structures in proton exchange membrane fuel cells.The performance of fuel cells with different flow fields was simulated and analyzed by CFD technology.With sufficient reaction gas supplied at every potential,their velocity distribution of hydrogen concentration,pressure drop in channels,temperature and water concentration in cathodic catalyst layer,and polarization curves were compared.The results show that the cell performance of serpentine flow field is the best,following with interdigital parallel flow field.Although the largest pressure drop is shown in serpentine flow field,the highest temperature in catalyst layer and the most uniform hydrogen and water distribution were observed.The advantage of serpentine flow field is more significant at high current density.

关 键 词：质子交换膜燃料电池 平行流场 交指流场 蛇形流场 数值模拟 

分 类 号：TM911.4[电气工程—电力电子与电力传动]