Numerical investigation of novel block flow channel on mass transport characteristics and performance of PEMFC

被引：37

作者：

Dong, Zizhe ^{[1
]}

Qin, Yanzhou ^{[1
]}

Zheng, Jiayang ^{[1
]}

Guo, Qiaoyu ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Engines, Tianjin 300350, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 67期

基金：

中国国家自然科学基金;

关键词：

Proton exchange membrane fuel cell; Flow channel; Block structure; Mass convection; Mass transport; Fuel cell performance; MEMBRANE FUEL-CELLS; FIELD DESIGNS; OPTIMIZATION; PARALLEL; ENHANCEMENT; REMOVAL;

D O I：

10.1016/j.ijhydene.2023.03.258

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：

This study develops a three-dimensional numerical model of a proton exchange mem-brane (PEM) fuel cell (PEMFC) to investigate the mass transport characteristics and per-formance of PEMFC with novel two-block structures in the cathode channel. The results reveal that the novel two-block structures improve the efficiency of mass transport and the performance of PEMFC. Effects of the arrangement of two-block structures and the oper-ating conditions on the PEMFC performance are investigated. It is found that the block position closer to the outlet of the channel has greater improvement of the PEMFC per-formance. The PEMFC performance increases firstly with the block structure number and then decreases, and the best number of block structures is 6 for the present study. The block channel has more evident effect when the PEMFC operated under high current density and small stoichiometric ratio, and the block channel is effective in a wide relative humidity (RH) range.& COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：26356 / 26374

页数：19

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