Liquid water discharge capability enhancement of hierarchical pore structure in metal foam flow field of proton exchange membrane fuel cell

被引:13
作者
Lin, Yixiong [1 ,2 ]
Sun, Yun [1 ]
Yang, Chen [1 ,2 ]
Zhang, Wei [3 ]
Wang, Qinglian [1 ,2 ]
Wan, Zhongmin [4 ]
Ye, Changshen [1 ,2 ]
Qiu, Ting [1 ,2 ]
机构
[1] Fuzhou Univ, Fujian Univ Engn Res Ctr React Distillat Technol, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
[2] Qingyuan Innovat Lab, Quanzhou, Peoples R China
[3] China Univ Petr, Coll Mech & Transportat Engn, Beijing, Peoples R China
[4] Hunan Inst Sci & Technol, Coll Mech Engn, Yueyang, Peoples R China
基金
中国国家自然科学基金;
关键词
hierarchical pore structure; lattice Boltzmann method (LBM); metal foam flow field; proton exchange membrane (PEM) fuel cell; water discharge capability; LATTICE-BOLTZMANN MODEL; PERFORMANCE; SIMULATION; DIFFUSIVITY;
D O I
10.1002/aic.18256
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Metal foam flow field shows great potential for next-generation proton exchange membrane (PEM) fuel cell of high power density due to its well-connected pore structure, high thermal and electrical conductivity. However, the complicated pore structure makes it a challenge for water management. To tackle this issue, a novel design of metal foam flow field with hierarchical pore structure was proposed. Based on lattice Boltzmann method (LBM), the structure-performance relationship between hierarchical pore structure and water discharge capability of flow field was explored by using breakthrough time. Furthermore, an optimal hierarchical pore structure for metal foam flow field that shows superior water discharge capability was obtained. Compared with metal foam with uniform coarse pore structure, breakthrough time can be reduced roughly by 17.6% in the one with optimal hierarchical pore structures. This finding provides a theoretical foundation and technical guidance for developing metal foam flow field.
引用
收藏
页数:13
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