Water transport through Nafion 112 membrane in DMFCs

被引：116

作者：

Lu, GQ ^{[1
]}

Liu, FQ

Wang, CY

机构：

[1] Penn State Univ, Electrochem Engine Ctr, Dept Mech & Nucl Engn, University Pk, PA 16802 USA

[2] Penn State Univ, Electrochem Engine Ctr, Dept Mat Sci & Engn, University Pk, PA 16802 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2005年 / 8卷 / 01期

关键词：

D O I：

10.1149/1.1825312

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Water management has emerged as a significant challenge in portable direct methanol fuel cells, DMFCs. Excessive water crossover through the membrane causes water loss in the anode and flooding in the cathode. We report a novel DMFC design based on Nafion 112 and a cathode gas-diffusion layer coated with a microporous layer. This DMFC operated with ambient air yielded a stable power density of 56 mW/cm(2) at 60 degrees C, while the net water transport coefficient was only 0.64 compared to a typical value of 3 for Nafion 117 membranes. In addition, the fuel efficiency was about 74-92%. (C) 2004 The Electrochemical Society.

引用

页码：A1 / A4

页数：4

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