Effects of cathode flow fields on direct methanol fuel cell-simulation study

被引：45

作者：

Jung, Guo-Bin ^{[1
]}

Su, Ay ^{[1
]}

Tu, Cheng-Hsin ^{[1
]}

Lin, Yur-Tsai ^{[1
]}

Weng, Fang-Bor ^{[1
]}

Chan, Shih-Hung ^{[1
]}

机构：

[1] Yuan Ze Univ, Fuel Cell Ctr, Chungli 320, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2007年 / 171卷 / 01期

关键词：

direct methanol fuel cell (DMFC); flow field; barren region; PERFORMANCE; DESIGN; CARBON; TRANSPORT; CROSSOVER;

D O I：

10.1016/j.jpowsour.2006.12.063

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 design of direct methanol fuel cell (DMFCs) plays an important role affecting the cell performance. Previous studies suggest that the combination of anode parallel flow field and cathode serpentine flow-field present the best and stable performance. Among these, cathode flow-field holds higher influence than that of anode. However, more detailed experiments needed to be done to find out the reasons. In this study, CFDRC half-cell models are adopted to simulate the flow phenomena within serpentine, parallel and grid flow field. We find that gas is well distributed within serpentine flow field while barren region are observed within parallel flow field. These factors contribute to the cell performance greatly. In addition, the durability test of DMFCs using parallel flow field is improved when the flow rate is increased or the current is uphold at inferior, so the barren region maintained at an acceptable level. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：212 / 217

页数：6

共 35 条

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