Methanol diffusion in water swollen ionomer membranes for DMFC applications

被引：37

作者：

Meier, F ^{[1
]}

Kerres, J ^{[1
]}

Eigenberger, G ^{[1
]}

机构：

[1] Univ Stuttgart, ICVT, D-70199 Stuttgart, Germany

来源：

JOURNAL OF MEMBRANE SCIENCE | 2004年 / 241卷 / 01期

关键词：

methanol diffusion; Nafion; polyaryl-blend-membranes; DMFC;

D O I：

10.1016/j.memsci.2004.05.016

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The methanol diffusion coefficient was measured for Nation and two differently cross-linked polyaryl-blend-membranes developed at ICVT. It could be shown that the methanol diffusion coefficient depends on both temperature and membrane water content. For the polyaryl-blend-membranes the methanol diffusion coefficient is approx. 2-2.5 times lower than for Nation at the same temperature and the same water content. The activation enthalpy for methanol diffusion in Nafion is about 20 kJ mol(-1) and decreases with increasing water content. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：137 / 141

页数：5

共 19 条

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