A study on cathode structure and water transport in air-breathing PEM fuel cells

被引：68

作者：

Jeong, Seong Uk

Cho, Eun Ae

Kim, Hyoung-Jhun

Lim, Tae-Hoon

Oh, In-Hwan

Kim, Sung Hyun

机构：

[1] Korea Inst Sci & Technol, Fuel Cell Res Ctr, Seoul 136791, South Korea

[2] Korea Univ, Dept Biol & Chem Engn, Seoul 136701, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 159卷 / 02期

关键词：

air-breathing fuel cell; dry operation; water transport; cathode optimization;

D O I：

10.1016/j.jpowsour.2005.12.046

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：

For portable electronics, air-breathing PEMFCs are being developed without external air-feeding and humidification systems. To optimize the cathode structure and to investigate characteristics of such air-breathing PEMFCs, the effects of catalyst loading and gas diffusion layer (GDL) properties on the cell performance are examined. Water transport in air-breathing PEMFCs is interpreted in terms of the net water drag coefficient, which was obtained by changing the current density, relative humidity, temperature and the hydrogen stoichiometry to understand the water transport phenomena under various conditions. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1089 / 1094

页数：6

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