Performance investigation on a novel 3D wave flow channel design for PEMFC

被引：158

作者：

Chen, Xi ^{[1
]}

Yu, Zhengkun ^{[1
]}

Yang, Chen ^{[2
]}

Chen, Yao ^{[1
]}

Jin, Chao ^{[1
]}

Ding, Yuejiao ^{[1
]}

Li, Wenbin ^{[1
,3
]}

Wan, Zhongmin ^{[1
]}

机构：

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

[2] Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China

[3] Cent South Univ, Sch Informat Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 19期

基金：

中国国家自然科学基金;

关键词：

PEMFC; Three-dimensional wave channel; CFD simulation; Enhancing mass transfer;

D O I：

10.1016/j.ijhydene.2020.06.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Flow field structure can largely determine the output performance of Polymer electrolyte membrane fuel cell. Excellent channel configuration accelerates electrochemical reactions in the catalytic layer, effectively avoiding flooding on the cathode side. In present study, a three-dimensional, multi-phase model of PEMFC with a 3D wave flow channel is established. CFD method is applied to optimize the geometry constructions of threedimensional wave flow channels. The results reveal that 3D wave flow channel is overall better than straight channel in promoting reactant gases transport, removing liquid water accumulated in microporous layer and avoiding thermal stress concentration in the membrane. Moreover, results show the optimal flow channel minimum depth and wave length of the 3D wave flow channel are 0.45 mm and 2 mm, respectively. Due to the periodic geometric characteristics of the wave channel, the convective mass transfer is introduced, improving gas flow rate in through-plane direction. Furthermore, when the cell output voltage is 0.4 V, the current density in the novel channel is 23.8% higher than that of conventional channel. (c) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11127 / 11139

页数：13

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