Oxygen and hydrogen permeation properties and water uptake of Nafion(R) 117 membrane and recast film for PEM fuel cell

被引：308

作者：

Broka, K

Ekdunge, P

机构：

[1] Royal Institute of Technology,Department of Chemical Engineering and Technology, Applied Electrochemistry

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1997年 / 27卷 / 02期

关键词：

D O I：

10.1023/A:1018469520562

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Oxygen and hydrogen permeability through Nafion(R) 117 membrane and recast Nafion film has been studied by means of gas chromatography at different values of temperature and gas relative humidity. Water uptake from the vapour phase by Nafion(R) 117 membrane and recast film has been investigated. It has been shown that oxygen and hydrogen permeability increases both with temperature and relative humidity of the gas, but water vapour uptake by both Nafion 117 membrane and recast film decreased with increasing temperature. SEM studies have been performed on the membrane-electrode assembly obtained by impregnation/hot-pressing and on carbon/Nafion(R) composite; these have indicated that the active catalyst layer is porous with channels for the gas transport.

引用

页码：117 / 123

页数：7

共 30 条

[1] FUEL-CELL ELECTROLYTES - EVOLUTION, PROPERTIES AND FUTURE-PROSPECTS [J].