Impact of land width and channel span on fuel cell performance

被引：27

作者：

Goebel, Steven G. ^{[1
]}

机构：

[1] Gen Motors Co, Fuel Cell Activ, Honeoye Falls, NY 14472 USA

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 18期

关键词：

Fuel cell; PEM fuel cell; Flow field design; Land width; Channel span; Cell performance; CURRENT-DENSITY; FLOW-FIELD; PEMFC;

D O I：

10.1016/j.jpowsour.2011.04.005

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：

The impact of land width and channel span on fuel cell performance was tested on 50 cm(2) flow fields. Combinations of land widths and channel spans of 0.25, 0.5 and 1.0 mm were evaluated. Polarization curves and high-frequency resistance were measured for several humidity levels for each of the flow fields. For performance at high current density, the land width was found to be the dominant factor. Reductions to the smallest size tested (0.25 mm) continued to showed improvement over wider lands. Adequate land fraction (preferably about 50%) needs to be provided to minimize contact resistance. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：7550 / 7554

页数：5

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