Performance study on a stepped flow field design for bipolar plate in PEMFC

被引：97

作者：

Chen, Xi ^{[1
]}

Chen, Yao ^{[1
]}

Liu, Qian ^{[1
]}

Xu, Jianghai ^{[1
]}

Liu, Qinxiao ^{[1
]}

Li, Wenbin ^{[1
]}

Zhang, Yan ^{[1
]}

Wan, Zhongmin ^{[1
]}

Wang, Xiaodong ^{[2
]}

机构：

[1] Hunan Inst Sci & Technol, Coll Mech Engn, Yueyang 414006, Peoples R China

[2] North China Elect Power Univ, Res Ctr Engn Thermophys, Beijing 102206, Peoples R China

来源：

ENERGY REPORTS | 2021年 / 7卷

基金：

中国国家自然科学基金;

关键词：

Proton exchange membrane fuel cell; Flow field; Structure design; Gas distribution; MEMBRANE FUEL-CELL; TRANSPORT PHENOMENA; GAS-DIFFUSION; MASS-TRANSFER; 2-PHASE FLOW; CHANNEL; OPTIMIZATION; DISTRIBUTOR; SIMULATION; ENHANCEMENT;

D O I：

10.1016/j.egyr.2021.01.003

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In order to solve the problems of non-uniform gas concentration distribution and serious flooding in the parallel flow field of traditional PEMFC, a stepped flow field of PEMFC bipolar plate is proposed in this paper. The gas concentration distribution, velocity distribution, liquid water distribution and current density distribution of traditional parallel flow field and stepped flow fields are studied by computational fluid dynamics (CFD) simulations. The results suggest that the fuel cells with stepped flow field are superior than the traditional fuel cell with parallel flow field. Compared with fuel cell with parallel flow field, the net power of fuel cell with stepped flow field is increased by 21.5%. Moreover, the stepped flow fields can improve the uniformity of gas concentration and current density distribution, accelerate the discharge of liquid water, alleviate water flooding phenomenon. (C) 2021 The Author(s). Published by Elsevier Ltd.

引用

页码：336 / 347

页数：12

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